Height 328–337 (12.9–13.3) mm (in): −0°20′ ± 45′; Height 338–347 (13.3–13.7) mm (in): 0°03′ ± 45′; Height 348–357 (13.7–14.1) mm (in): 0°24′ ± 45′; Height 358–367 (14.1–14.4) mm (in): 0°44′ ± 45′; Height 368–377 (14.4–14.8) mm (in): 1°02′ ± 45′Height 328–337 (12.9–13.3) mm (in): −0°20′ ± 45′; Height 338–347 (13.3–13.7) mm (in): 0°03′ ± 45′; Height 348–357 (13.7–14.1) mm (in): 0°24′ ± 45′; Height 358–367 (14.1–14.4) mm (in): 0°44′ ± 45′; Height 368–377 (14.4–14.8) mm (in): 1°02′ ± 45′

Front caster by wheel-center-to-fender height (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Height 328–337 (12.9–13.3) mm (in): 5°16′ ± 45′; Height 338–347 (13.3–13.7) mm (in): 5°02′ ± 45′; Height 348–357 (13.7–14.1) mm (in): 4°49′ ± 45′; Height 358–367 (14.1–14.4) mm (in): 4°35′ ± 45′; Height 368–377 (14.4–14.8) mm (in): 4°21′ ± 45′Height 328–337 (12.9–13.3) mm (in): 5°16′ ± 45′; Height 338–347 (13.3–13.7) mm (in): 5°02′ ± 45′; Height 348–357 (13.7–14.1) mm (in): 4°49′ ± 45′; Height 358–367 (14.1–14.4) mm (in): 4°35′ ± 45′; Height 368–377 (14.4–14.8) mm (in): 4°21′ ± 45′

Front wheel alignment — total toe-in (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

0.12±0.16 in (3±4 mm); 0°18′±24′3±4 mm {0.12±0.16 in}; 0°18′±24′

Front wheel alignment — camber by ride height (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

Height from center of wheel to front fender brim (mm {in}) 327—336 {12.9—13.2} −0°32′±1° 337—346 {13.3—13.6} −0°12′±1° 347—356 {13.7—14.0} 0°06′±1° 357—366 {14.1—14.4} 0°23′±1° 367—376 {14.5—14.8} 0°38′±1°Height from center of wheel to front fender brim (mm {in}) 327—336 {12.9—13.2} −0°32′±1° 337—346 {13.3—13.6} −0°12′±1° 347—356 {13.7—14.0} 0°06′±1° 357—366 {14.1—14.4} 0°23′±1° 367—376 {14.5—14.8} 0°38′±1°

Front wheel alignment — caster by rear ride height (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

Height from center of wheel to rear fender brim (mm {in}) 346—355 {13.7—13.9} 6°17′±1° 356—365 {14.1—14.3} 6°03′±1° 366—375 {14.5—14.7} 5°48′±1° 376—385 {14.9—15.1} 5°34′±1° 386—395 {15.2—15.5} 5°20′±1°Height from center of wheel to rear fender brim (mm {in}) 346—355 {13.7—13.9} 6°17′±1° 356—365 {14.1—14.3} 6°03′±1° 366—375 {14.5—14.7} 5°48′±1° 376—385 {14.9—15.1} 5°34′±1° 386—395 {15.2—15.5} 5°20′±1°

Maximum steering angle (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

Inner 38°±3°; outer 33°±3°Inner 38°±3°; outer 33°±3°

Steering axis inclination — reference (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

11°38′ (reference)11°38′ (reference)

Front alignment total toe-in (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Total toe-in mm {in} 3 ± 3 {0.12 ± 0.12} degree 0°18′ ± 18′Total toe-in mm {in} 3 ± 3 {0.12 ± 0.12} degree 0°18′ ± 18′

Front alignment toe-in per side (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Total toe-in (per side) degree 0°09′ ± 09′Total toe-in (per side) degree 0°09′ ± 09′

Maximum steering angle (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Maximum steering angle Inner 37°23′ ± 2° Outer 32°32′ ± 2°Maximum steering angle Inner 37°23′ ± 2° Outer 32°32′ ± 2°

Kingpin angle (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Kingpin angle 11°20′Kingpin angle 11°20′

Front alignment camber by front ride height (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Camber angle Height from center of wheel to fender brim mm {in} 328—337 {12.9—13.3} −0°20′ ± 45′ 338—347 {13.3—13.7} 0°03′ ± 45′ 348—357 {13.7—14.1} 0°24′ ± 45′ 358—367 {14.1—14.4} 0°44′ ± 45′ 368—377 {14.4—14.8} 1°02′ ± 45′Camber angle Height from center of wheel to fender brim mm {in} 328—337 {12.9—13.3} −0°20′ ± 45′ 338—347 {13.3—13.7} 0°03′ ± 45′ 348—357 {13.7—14.1} 0°24′ ± 45′ 358—367 {14.1—14.4} 0°44′ ± 45′ 368—377 {14.4—14.8} 1°02′ ± 45′

Front alignment caster by front ride height (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Caster angle Height from center of wheel to fender brim mm {in} 328—337 {12.9—13.3} 5°16′ ± 45′ 338—347 {13.3—13.7} 5°02′ ± 45′ 348—357 {13.7—14.1} 4°49′ ± 45′ 358—367 {14.1—14.4} 4°35′ ± 45′ 368—377 {14.4—14.8} 4°21′ ± 45′Caster angle Height from center of wheel to fender brim mm {in} 328—337 {12.9—13.3} 5°16′ ± 45′ 338—347 {13.3—13.7} 5°02′ ± 45′ 348—357 {13.7—14.1} 4°49′ ± 45′ 358—367 {14.1—14.4} 4°35′ ± 45′ 368—377 {14.4—14.8} 4°21′ ± 45′

Front wheel alignment — total toe-in (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

Total toe-in (mm {in}) 3±4 {0.12±0.15} (degree) 0°18′±24′Total toe-in (mm {in}) 3±4 {0.12±0.15} (degree) 0°18′±24′

Front wheel alignment — camber by ride height (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

Front wheel alignment — caster by rear ride height (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

Height from center of wheel to rear fender brim (mm {in}) 346—355 {13.7—13.9} 6°17′±1° 356—365 {14.0—14.3} 6°03′±1° 366—375 {14.4—14.7} 5°48′±1° 376—385 {14.8—15.1} 5°34′±1° 386—395 {15.2—15.5} 5°20′±1°Height from center of wheel to rear fender brim (mm {in}) 346—355 {13.7—13.9} 6°17′±1° 356—365 {14.0—14.3} 6°03′±1° 366—375 {14.4—14.7} 5°48′±1° 376—385 {14.8—15.1} 5°34′±1° 386—395 {15.2—15.5} 5°20′±1°

Maximum steering angle (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

Maximum steering angle Inner 38°±3° Outer 33°±3°Maximum steering angle Inner 38°±3° Outer 33°±3°

Steering axis inclination — reference (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

Steering axis inclination (reference value) 11°38′Steering axis inclination (reference value) 11°38′

Front wheel bearing maximum axial play (NB2 and Mazdaspeed)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003/2005 factory evidence.; NB 2004–2005 (BP-Z3-TURBO) — 2005 factory evidence; 2004 inferred within MSM family.

Maximum 0.002 in (0.05 mm)Maximum 0.05 mm {0.002 in}

Rear Suspension

Rear total toe-in (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

0.12 ± 0.12 in (3 ± 3 mm); 0°18′ ± 18′3 ± 3 mm (0.12 ± 0.12 in); 0°18′ ± 18′

Rear camber by wheel-center-to-fender height (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Height 346–355 (13.6–14.0) mm (in): −1°08′ ± 30′; Height 356–365 (14.0–14.4) mm (in): −0°54′ ± 30′; Height 366–375 (14.4–14.8) mm (in): −0°43′ ± 30′; Height 376–385 (14.8–15.2) mm (in): −0°35′ ± 30′; Height 386–395 (15.2–15.6) mm (in): −0°30′ ± 30′Height 346–355 (13.6–14.0) mm (in): −1°08′ ± 30′; Height 356–365 (14.0–14.4) mm (in): −0°54′ ± 30′; Height 366–375 (14.4–14.8) mm (in): −0°43′ ± 30′; Height 376–385 (14.8–15.2) mm (in): −0°35′ ± 30′; Height 386–395 (15.2–15.6) mm (in): −0°30′ ± 30′

Rear wheel alignment — total toe-in (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

0.12±0.16 in (3±4 mm); 0°18′±24′3±4 mm {0.12±0.16 in}; 0°18′±24′

Rear wheel alignment — camber by ride height (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

Height from center of wheel to rear fender brim (mm {in}) 346—355 {13.7—13.9} −1°14′±1° 356—365 {14.1—14.3} −0°59′±1° 366—375 {14.5—14.7} −0°47′±1° 376—385 {14.9—15.1} −0°38′±1° 386—395 {15.2—15.5} −0°32′±1°Height from center of wheel to rear fender brim (mm {in}) 346—355 {13.7—13.9} −1°14′±1° 356—365 {14.1—14.3} −0°59′±1° 366—375 {14.5—14.7} −0°47′±1° 376—385 {14.9—15.1} −0°38′±1° 386—395 {15.2—15.5} −0°32′±1°

Rear wheel alignment — thrust angle (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

0°±48′0°±48′

Rear alignment total toe-in (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Total toe-in mm {in} 3 ± 3 {0.12 ± 0.12} degree 0°18′ ± 18′Total toe-in mm {in} 3 ± 3 {0.12 ± 0.12} degree 0°18′ ± 18′

Rear alignment toe-in per side (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Total toe-in (per side) degree 0°09′ ± 09′Total toe-in (per side) degree 0°09′ ± 09′

Rear alignment camber by rear ride height (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Camber angle Height from center of wheel to fender brim mm {in} 346—355 {13.6—14.0} −1°08′ ± 30′ 356—365 {14.0—14.4} −0°54′ ± 30′ 366—375 {14.4—14.8} −0°43′ ± 30′ 376—385 {14.8—15.2} −0°35′ ± 30′ 386—395 {15.2—15.6} −0°30′ ± 30′Camber angle Height from center of wheel to fender brim mm {in} 346—355 {13.6—14.0} −1°08′ ± 30′ 356—365 {14.0—14.4} −0°54′ ± 30′ 366—375 {14.4—14.8} −0°43′ ± 30′ 376—385 {14.8—15.2} −0°35′ ± 30′ 386—395 {15.2—15.6} −0°30′ ± 30′

Rear wheel alignment — total toe-in (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

Total toe-in (mm {in}) 3±4 {0.12±0.15} (degree) 0°18′±24′Total toe-in (mm {in}) 3±4 {0.12±0.15} (degree) 0°18′±24′

Rear wheel alignment — camber by ride height (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

Height from center of wheel to rear fender brim (mm {in}) 346—355 {13.7—13.9} −1°14′±1° 356—365 {14.0—14.3} −0°59′±1° 366—375 {14.4—14.7} −0°47′±1° 376—385 {14.8—15.1} −0°38′±1° 386—395 {15.2—15.5} −0°32′±1°Height from center of wheel to rear fender brim (mm {in}) 346—355 {13.7—13.9} −1°14′±1° 356—365 {14.0—14.3} −0°59′±1° 366—375 {14.4—14.7} −0°47′±1° 376—385 {14.8—15.1} −0°38′±1° 386—395 {15.2—15.5} −0°32′±1°

Rear wheel alignment — thrust angle (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

Thrust angle 0°±48′Thrust angle 0°±48′

Rear wheel bearing maximum axial play (NB2 and Mazdaspeed)

Maximum 0.002 in (0.05 mm)Maximum 0.05 mm {0.002 in}

Rear camber — maximum left/right difference (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

1° maximum left/right difference1° maximum left/right difference

Steering

Steering wheel free play (NB2 and Mazdaspeed)

0—1.18 in (0—30 mm)0—30 mm {0—1.18 in}

Manual steering wheel effort (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Manual steering only. Other years inferred from 2003 factory evidence.

1.2—6.6 lbf (5—29 N; 0.5—3.0 kgf)5—29 N {0.5—3.0 kgf, 1.2—6.6 lbf}

Steering shaft inspection length (NB2 and Mazdaspeed)

23.38—23.45 in (593.8—595.8 mm)593.8—595.8 mm {23.38—23.45 in}

Steering rack maximum runout (NB2 and Mazdaspeed)

Maximum 0.012 in (0.3 mm)Maximum 0.3 mm {0.012 in}

Power steering pump test pressure (2001–2003 NB2, non-turbo)

Service measurements and fasteners · NB 2001–2003 (BP-Z3) — Actual 2003 factory specification corroborated by early NB2 publication 1719-1U-01G. 2001–2002 inferred, not factory-year verified. Actual 2004–2005 higher-pressure specifications are separate.

7,846—8,208 psi (335 kPa; 80—85 kgf/cm², 1,138—1)7,846—8,335 kPa {80—85 kgf/cm², 1,138—1,208 psi}

Power steering gear housing test pressure (2001–2003 NB2, non-turbo)

7,846—8,208 psi (335 kPa; 80—85 kgf/cm², 1,138—1)7,846—8,335 kPa {80—85 kgf/cm², 1,138—1,208 psi}

Power steering pump test pressure (2004–2005 NB2 and Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3) — Actual2004 and2005 factory evidence.; NB 2004–2005 (BP-Z3-TURBO) — 2005 factory evidence; 2004 inferred within MSM family.

314 psi (8.33–9.06 MPa; 85.0–92.3 kgf/cm², 1,209–1)8.33–9.06 MPa {85.0–92.3 kgf/cm², 1,209–1,314 psi}

Power steering gear housing test pressure (2004–2005 NB2 and Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3) — Actual2004 and2005 factory evidence.; NB 2004–2005 (BP-Z3-TURBO) — 2005 factory evidence; 2004 inferred within MSM family.

314 psi (8.33–9.06 MPa; 85.0–92.3 kgf/cm², 1,209–1)8.33–9.06 MPa {85.0–92.3 kgf/cm², 1,209–1,314 psi}

Steering lock mounting bolts

Steering column & shaft · NB 1999–2000

New shear-head bolts, tightened until the heads break offNew shear-head bolts, tightened until the heads break off

Steering wheel effort (NB2)

Steering rack · NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)

7.8 N·m {80 kgf·cm, 69 in·lbf} max.7.8 N·m {80 kgf·cm, 69 in·lbf} max.

Steering rack pinion preload at center (NB2)

Steering rack · NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)

Center of rack ±90°: 1.0—1.1 N·m {10—12 kgf·cm, 8.7—10.4 in·lbf}Center of rack ±90°: 1.0—1.1 N·m {10—12 kgf·cm, 8.7—10.4 in·lbf}

Steering rack tie rod end ball joint starting torque (NB2)

Tie rods · NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)

0.1—3.1 N·m {1—32 kgf·cm, 0.9—27.7 in·lbf}0.1—3.1 N·m {1—32 kgf·cm, 0.9—27.7 in·lbf}

Steering rack tie rod ball joint starting torque (NB2)

Tie rods · NB 2001–2005 (BP-Z3); NB 2004–2005 (BP-Z3-TURBO)

0.1—3.4 N·m {1—35 kgf·cm, 0.9—30.3 in·lbf}0.1—3.4 N·m {1—35 kgf·cm, 0.9—30.3 in·lbf}

Engine

Accessory drive belt deflection — new belt (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

8.0–9.0 (0.31–0.35) mm (in)8.0–9.0 (0.31–0.35) mm (in)

Accessory drive belt tension — new belt (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

491–589 (50–60, 110–132) N (kg, lb)491–589 (50–60, 110–132) N (kg, lb)

Accessory drive belt deflection — used belt (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

9.0–10.0 (0.35–0.39) mm (in)9.0–10.0 (0.35–0.39) mm (in)

Accessory drive belt tension — used belt (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

422–491 (43–50, 95–110) N (kg, lb)422–491 (43–50, 95–110) N (kg, lb)

Compression pressure — standard (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

1,192 psi (324 kPa; 13.5 kg/cm²) - 300 rpm1,324 kPa (13.5 kg/cm², 192 psi) - 300 rpm

Compression pressure — minimum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

135 psi (932 kPa; 9.5 kg/cm²) - 300 rpm932 kPa (9.5 kg/cm², 135 psi) - 300 rpm

Compression pressure — maximum cylinder difference (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

28 psi (196 kPa; 2.0 kg/cm²)196 kPa (2.0 kg/cm², 28 psi)

Cylinder head gasket face distortion — maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Distortion: 0.006 in (0.15 mm) max.Distortion: 0.15 mm (0.006 in) max.

Cylinder head height (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Height: 5.268–5.276 in (133.8–134.0 mm)Height: 133.8–134.0 mm (5.268–5.276 in)

Cylinder head resurfacing removal — maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Grinding: 0.008 in (0.20 mm) max.Grinding: 0.20 mm (0.008 in) max.

Cylinder head manifold face distortion — maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Distortion: 0.006 in (0.15 mm) max.Distortion: 0.15 mm (0.006 in) max.

Valve length — standard and minimum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Length Standard IN: 4.1452 in (105.29 mm) EX: 4.1492 in (105.39 mm) Minimum IN: 4.1256 in (104.79 mm) EX: 4.1295 in (104.89 mm)Length Standard IN: 105.29 mm (4.1452 in) EX: 105.39 mm (4.1492 in) Minimum IN: 104.79 mm (4.1256 in) EX: 104.89 mm (4.1295 in)

Valve stem diameter (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Diameter IN: 0.2350–0.2356 in (5.970–5.985 mm) EX: 0.2348–0.2354 in (5.965–5.980 mm)Diameter IN: 5.970–5.985 mm (0.2350–0.2356 in) EX: 5.965–5.980 mm (0.2348–0.2354 in)

Valve guide inner diameter (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Inner diameter IN: 0.2366–0.2374 in (6.01–6.03 mm) EX: 0.2366–0.2374 in (6.01–6.03 mm)Inner diameter IN: 6.01–6.03 mm (0.2366–0.2374 in) EX: 6.01–6.03 mm (0.2366–0.2374 in)

Valve stem to guide clearance — standard and maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Clearance IN: 0.0010–0.0024 in (0.025–0.060 mm) EX: 0.0012–0.0026 in (0.030–0.065 mm) Maximum: 0.008 in (0.20 mm)Clearance IN: 0.025–0.060 mm (0.0010–0.0024 in) EX: 0.030–0.065 mm (0.0012–0.0026 in) Maximum: 0.20 mm (0.008 in)

Valve spring free length — standard and minimum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Free length Standard IN: 1.890 in (48.0 mm) EX: 1.902 in (48.3 mm) Minimum IN: 1.850 in (47.0 mm) EX: 1.862 in (47.3 mm)Free length Standard IN: 48.0 mm (1.890 in) EX: 48.3 mm (1.902 in) Minimum IN: 47.0 mm (1.850 in) EX: 47.3 mm (1.862 in)

Valve spring out-of-square — maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Out-of-square IN: 0.0661 in (1.68 mm) max. EX: 0.0665 in (1.69 mm) max.Out-of-square IN: 1.68 mm (0.0661 in) max. EX: 1.69 mm (0.0665 in) max.

Camshaft runout — maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Runout: 0.0012 in (0.03 mm) max.Runout: 0.03 mm (0.0012 in) max.

Camshaft lobe height — standard and minimum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Height Standard IN: 1.6098 in (40.888 mm) EX: 1.6098 in (40.889 mm) Minimum IN: 1.6019 in (40.688 mm) EX: 1.6019 in (40.689 mm)Height Standard IN: 40.888 mm (1.6098 in) EX: 40.889 mm (1.6098 in) Minimum IN: 40.688 mm (1.6019 in) EX: 40.689 mm (1.6019 in)

Camshaft journal diameter and out-of-round (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Diameter: 1.0213–1.0222 in (25.940–25.965 mm) Out-of-round: 0.002 in (0.05 mm) max.Diameter: 25.940–25.965 mm (1.0213–1.0222 in) Out-of-round: 0.05 mm (0.002 in) max.

Camshaft journal oil clearance — standard and maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Oil clearance: 0.0014–0.0032 in (0.035–0.081 mm) Maximum: 0.006 in (0.15 mm)Oil clearance: 0.035–0.081 mm (0.0014–0.0032 in) Maximum: 0.15 mm (0.006 in)

Camshaft end play — standard and maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

End play: 0.0028–0.0075 in (0.07–0.19 mm) Maximum: 0.008 in (0.20 mm)End play: 0.07–0.19 mm (0.0028–0.0075 in) Maximum: 0.20 mm (0.008 in)

Cylinder block top face distortion — maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Distortion: 0.006 in (0.15 mm) max.Distortion: 0.15 mm (0.006 in) max.

Cylinder block resurfacing removal — maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Height: 8.720 in (221.5 mm) Grinding: 0.008 in (0.20 mm) max.Height: 221.5 mm (8.720 in) Grinding: 0.20 mm (0.008 in) max.

Piston to cylinder clearance — standard and maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Clearance: 0.0015–0.0020 in (0.039–0.052 mm) Maximum: 0.006 in (0.15 mm)Clearance: 0.039–0.052 mm (0.0015–0.0020 in) Maximum: 0.15 mm (0.006 in)

Top and second piston ring to land clearance (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Clearance (Top and Second): 0.0012–0.0028 in (0.03–0.07 mm) Maximum: 0.006 in (0.15 mm)Clearance (Top and Second): 0.03–0.07 mm (0.0012–0.0028 in) Maximum: 0.15 mm (0.006 in)

Piston ring end gap — standard and maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

End gap Top: 0.006–0.012 in (0.15–0.30 mm) Second: 0.006–0.012 in (0.15–0.30 mm) Oil rail: 0.008–0.028 in (0.20–0.70 mm) Maximum: 0.039 in (1.0 mm)End gap Top: 0.15–0.30 mm (0.006–0.012 in) Second: 0.15–0.30 mm (0.006–0.012 in) Oil rail: 0.20–0.70 mm (0.008–0.028 in) Maximum: 1.0 mm (0.039 in)

Piston pin to piston clearance (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Clearance: -0.0002–0.0005 in (-0.005–0.013 mm)Clearance: -0.005–0.013 mm (-0.0002–0.0005 in)

Connecting rod bushing to piston pin clearance (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Clearance: 0.0004–0.0011 in (0.010–0.027 mm)Clearance: 0.010–0.027 mm (0.0004–0.0011 in)

Connecting rod bending — maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Bending: 0.0030 in (0.075 mm) max./1.97 in (50 mm)Bending: 0.075 mm (0.0030 in) max./50 mm (1.97 in)

Crankshaft runout — maximum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Runout: 0.0016 in (0.04 mm) max.Runout: 0.04 mm (0.0016 in) max.

Crankshaft standard journal diameters and out-of-round (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Main journal Diameter: 1.9661–1.9668 in (49.938–49.956 mm) Out-of-round: 0.0020 in (0.05 mm) max. Crankpin journal Diameter: 1.7693–1.7699 in (44.940–44.956 mm) Out-of-round: 0.0020 in (0.05 mm) max.Main journal Diameter: 49.938–49.956 mm (1.9661–1.9668 in) Out-of-round: 0.05 mm (0.0020 in) max. Crankpin journal Diameter: 44.940–44.956 mm (1.7693–1.7699 in) Out-of-round: 0.05 mm (0.0020 in) max.

Generator belt deflection — new (NB2 and Mazdaspeed)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.; NB 2004–2005 (BP-Z3-TURBO) — 2005 factory technical data explicitly includes BP WITH TC; 2004 inferred within MSM family.

mm {in}: 5.5—7.0 {0.22—0.27}mm {in}: 5.5—7.0 {0.22—0.27}

Generator belt deflection — used (NB2 and Mazdaspeed)

mm {in}: 6.0—7.5 {0.24—0.29}mm {in}: 6.0—7.5 {0.24—0.29}

Generator belt deflection — limit (NB2 and Mazdaspeed)

mm {in}: 8.0 {0.31}mm {in}: 8.0 {0.31}

P/S, P/S+A/C belt deflection — new (NB2 and Mazdaspeed)

mm {in}: 7.0—8.0 {0.28—0.31}mm {in}: 7.0—8.0 {0.28—0.31}

P/S, P/S+A/C belt deflection — used (NB2 and Mazdaspeed)

mm {in}: 9.0—10.0 {0.36—0.39}mm {in}: 9.0—10.0 {0.36—0.39}

P/S, P/S+A/C belt deflection — limit (NB2 and Mazdaspeed)

mm {in}: 11.5 {0.45}mm {in}: 11.5 {0.45}

Generator belt tension — new (NB2 and Mazdaspeed)

N {kgf, lbf}: 491—745 {50—76, 111—167}N {kgf, lbf}: 491—745 {50—76, 111—167}

Generator belt tension — used (NB2 and Mazdaspeed)

N {kgf, lbf}: 491—706 {50—72, 111—158}N {kgf, lbf}: 491—706 {50—72, 111—158}

Generator belt tension — limit (NB2 and Mazdaspeed)

N {kgf, lbf}: 343 {35, 77}N {kgf, lbf}: 343 {35, 77}

P/S, P/S+A/C belt tension — new (NB2 and Mazdaspeed)

≈132.188–154.219 lbf (588–686 N)588–686 N

P/S, P/S+A/C belt tension — used (NB2 and Mazdaspeed)

N {kgf, lbf}: 422—490 {43—50, 95—110}N {kgf, lbf}: 422—490 {43—50, 95—110}

P/S, P/S+A/C belt tension — limit (NB2 and Mazdaspeed)

N {kgf, lbf}: 245 {25, 55}N {kgf, lbf}: 245 {25, 55}

Intake valve clearance — cold (NB2 and Mazdaspeed)

0.007–0.009 in (0.18–0.24 mm)0.18–0.24 mm {0.007–0.009 in}

Exhaust valve clearance — cold (NB2 and Mazdaspeed)

0.011–0.013 in (0.28–0.34 mm)0.28–0.34 mm {0.011–0.013 in}

Cylinder compression — standard (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

1,182 psi (255 kPa; 12.8 kgf/cm²) at 300 rpm1,255 kPa {12.8 kgf/cm², 182 psi} at 300 rpm

Cylinder compression — minimum (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

128 psi (883 kPa; 9.0 kgf/cm²) minimum at 300 rpm883 kPa {9.0 kgf/cm², 128 psi} minimum at 300 rpm

Cylinder compression — maximum difference (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

28 psi (196 kPa; 2.0 kgf/cm²) maximum difference196 kPa {2.0 kgf/cm², 28 psi} maximum difference

Cylinder compression — standard (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

209 psi (1442 kPa; 14.7 kgf/cm²) at 300 rpm1442 kPa {14.7 kgf/cm², 209 psi} at 300 rpm

Cylinder compression — minimum (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

146 psi (1009 kPa; 10.29 kgf/cm²) minimum at 300 rpm1009 kPa {10.29 kgf/cm², 146 psi} minimum at 300 rpm

Cylinder compression — maximum difference (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

28 psi (196 kPa; 2.0 kgf/cm²) maximum difference196 kPa {2.0 kgf/cm², 28 psi} maximum difference

Intake valve clearance — cold (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

≈0.00709–0.00945 in (0.18–0.24 mm)0.18–0.24 mm

Exhaust valve clearance — cold (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

≈0.01102–0.01339 in (0.28–0.34 mm)0.28–0.34 mm

Cylinder head gasket-face distortion (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Distortion: 0.004 in (0.10 mm) max.Distortion: 0.10mm {0.004 in} max.

Cylinder head height (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Height: 5.268—5.275 in (133.8—134.0 mm)Height: 133.8—134.0mm {5.268—5.275 in}

Cylinder head gasket-face grinding allowance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Grinding: 0.004 in (0.10 mm) max.Grinding: 0.10mm {0.004 in} max.

Cylinder head manifold contact-face distortion (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Distortion: 0.006 in (0.15 mm) max.Distortion: 0.15mm {0.006 in} max.

Cylinder head manifold contact-face grinding allowance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Grinding: 0.008 in (0.20 mm) max.Grinding: 0.20mm {0.008 in} max.

Valve head margin thickness (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Margin thickness IN: 0.035 in (0.9 mm) EX: 0.039 in (1.0 mm)Margin thickness IN: 0.9mm {0.035 in} EX: 1.0mm {0.039 in}

Valve overall length (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Length Standard IN: 4.0114 in (101.89 mm) EX: 4.0153 in (101.99 mm) Minimum IN: 3.9524 in (100.39 mm) EX: 3.9563 in (100.49 mm)Length Standard IN: 101.89mm {4.0114 in} EX: 101.99mm {4.0153 in} Minimum IN: 100.39mm {3.9524 in} EX: 100.49mm {3.9563 in}

Valve stem diameter (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Diameter IN: 0.2351—0.2356 in (5.970—5.985 mm) EX: 0.2349—0.2354 in (5.965—5.980 mm) Minimum IN: 0.2331 in (5.920 mm) EX: 0.2329 in (5.915 mm)Diameter IN: 5.970—5.985mm {0.2351—0.2356 in} EX: 5.965—5.980mm {0.2349—0.2354 in} Minimum IN: 5.920mm {0.2331 in} EX: 5.915mm {0.2329 in}

Valve guide inner diameter (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Inner diameter IN: 0.2359—0.2374 in (5.99—6.03 mm) EX: 0.2359—0.2374 in (5.99—6.03 mm)Inner diameter IN: 5.99—6.03mm {0.2359—0.2374 in} EX: 5.99—6.03mm {0.2359—0.2374 in}

Valve stem-to-guide clearance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Clearance IN: 0.0002—0.0023 in (0.005—0.060 mm) EX: 0.0004—0.0025 in (0.010—0.065 mm) Maximum: 0.008 in (0.20 mm)Clearance IN: 0.005—0.060mm {0.0002—0.0023 in} EX: 0.010—0.065mm {0.0004—0.0025 in} Maximum: 0.20mm {0.008 in}

Valve guide installed projection (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Height: 0.721—0.744 in (18.3—18.9 mm)Height: 18.3—18.9mm {0.721—0.744 in}

Valve seat contact width (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Width: 0.032—0.055 in (0.8—1.4 mm)Width: 0.8—1.4mm {0.032—0.055 in}

Valve spring free length (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Free length Standard: 1.821 in (46.26 mm)Free length Standard: 46.26mm {1.821 in}

Valve spring loaded height and load (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Minimum length: 1.56 in (39.5 mm) with a set load of 50.2—56.7 lbf (224—253 N; 22.8—25.8 kgf)Minimum length: 39.5mm {1.56 in} with a set load of 224—253 N {22.8—25.8 kgf, 50.2—56.7 lbf}

Valve spring out-of-square (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Out-of-square: 0.0638 in (1.62 mm) max.Out-of-square: 1.62mm {0.0638 in} max.

Camshaft runout (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Runout: 0.0012 in (0.03 mm) max.Runout: 0.03mm {0.0012 in} max.

Camshaft lobe height (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Height Standard IN: 1.7360 in (44.094 mm) EX: 1.7560 in (44.600 mm) Minimum IN: 1.7281 in (43.894 mm) EX: 1.7480 in (44.400 mm)Height Standard IN: 44.094mm {1.7360 in} EX: 44.600mm {1.7560 in} Minimum IN: 43.894mm {1.7281 in} EX: 44.400mm {1.7480 in}

Camshaft journal diameter (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Diameter: 1.0213—1.0222 in (25.940—25.965 mm)Diameter: 25.940—25.965mm {1.0213—1.0222 in}

Camshaft journal out-of-round (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Out-of-round: 0.001 in (0.03 mm) max.Out-of-round: 0.03mm {0.001 in} max.

Camshaft journal oil clearance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Oil clearance:0.0014—0.0031 in (0.035—0.081 mm) Maximum: 0.006 in (0.15 mm)Oil clearance:0.035—0.081mm {0.0014—0.0031 in} Maximum: 0.15mm {0.006 in}

Camshaft end play (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

End play: 0.0028—0.0074 in (0.07—0.19 mm) Maximum: 0.008 in (0.20 mm)End play: 0.07—0.19mm {0.0028—0.0074 in} Maximum: 0.20mm {0.008 in}

Cylinder block deck distortion (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Distortion: 0.006 in (0.15 mm) max.Distortion: 0.15mm {0.006 in} max.

Cylinder block height (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Height: 8.720 in (221.5 mm)Height: 221.5mm {8.720 in}

Cylinder block deck grinding allowance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Grinding: 0.008 in (0.20 mm) max.Grinding: 0.20mm {0.008 in} max.

Cylinder bore diameter by piston size (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Cylinder bore mm {in} Standard 83.000—83.019 {3.2678—3.2684} 0.25 {0.010} oversize 83.256—83.263 {3.2778—3.2780} 0.50 {0.020} oversize 83.506—83.513 {3.2877—3.2879}Cylinder bore mm {in} Standard 83.000—83.019 {3.2678—3.2684} 0.25 {0.010} oversize 83.256—83.263 {3.2778—3.2780} 0.50 {0.020} oversize 83.506—83.513 {3.2877—3.2879}

Cylinder bore taper (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Taper: 0.0007 in (0.019 mm) max.Taper: 0.019mm {0.0007 in} max.

Cylinder bore out-of-round (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Out-of-round: 0.0007 in (0.019 mm) max.Out-of-round: 0.019mm {0.0007 in} max.

Piston diameter by size (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Piston diameter mm {in} Standard 82.954—82.974 {3.2660—3.2666} 0.25 {0.010} oversize 83.211—83.217 {3.2761—3.2762} 0.50 {0.020} oversize 83.461—83.467 {3.2859—3.2861}Piston diameter mm {in} Standard 82.954—82.974 {3.2660—3.2666} 0.25 {0.010} oversize 83.211—83.217 {3.2761—3.2762} 0.50 {0.020} oversize 83.461—83.467 {3.2859—3.2861}

Piston-to-cylinder clearance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Clearance: 0.0013—0.0023 in (0.032—0.059 mm) Maximum: 0.006 in (0.15 mm)Clearance: 0.032—0.059mm {0.0013—0.0023 in} Maximum: 0.15mm {0.006 in}

Piston ring-to-land clearance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Clearance Top: 0.0012—0.0025 in (0.03—0.065 mm) Second: 0.0012—0.0027 in (0.03—0.07 mm)Clearance Top: 0.03—0.065mm {0.0012—0.0025 in} Second: 0.03—0.07mm {0.0012—0.0027 in}

Piston ring end gap (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

End gap Top: 0.006—0.011 in (0.15—0.30 mm) Second: 0.006—0.011 in (0.15—0.30 mm) Oil rail: 0.008—0.027 in (0.20—0.70 mm) Maximum: 0.039 in (1.0 mm)End gap Top: 0.15—0.30mm {0.006—0.011 in} Second: 0.15—0.30mm {0.006—0.011 in} Oil rail: 0.20—0.70mm {0.008—0.027 in} Maximum: 1.0mm {0.039 in}

Piston pin hole diameter (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Diameter: 0.7870—0.7874 in (19.988—20.000 mm)Diameter: 19.988—20.000mm {0.7870—0.7874 in}

Piston pin diameter (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Diameter: 0.7869—0.7871 in (19.987—19.993 mm)Diameter: 19.987—19.993mm {0.7869—0.7871 in}

Piston pin-to-piston clearance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Clearance: −0.0002—0.0005 in (−0.005—0.013 mm)Clearance: −0.005—0.013mm {−0.0002—0.0005 in}

Connecting rod small-end bushing inner diameter (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Diameter: 0.7876—0.7879 in (20.003—20.014 mm)Diameter: 20.003—20.014mm {0.7876—0.7879 in}

Connecting rod bushing-to-pin clearance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Clearance: 0.0004—0.0010 in (0.010—0.027 mm)Clearance: 0.010—0.027mm {0.0004—0.0010 in}

Connecting rod bending (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Bending: 0.0012 in (0.030 mm) max./3.94 in (100 mm)Bending: 0.030mm {0.0012 in} max./100mm {3.94 in}

Connecting rod center-to-center length (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Length (Center to center): 5.231—5.234 in (132.85—132.95 mm)Length (Center to center): 132.85—132.95mm {5.231—5.234 in}

Crankshaft runout (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Runout: 0.0016 in (0.04 mm) max.Runout: 0.04mm {0.0016 in} max.

Crankshaft main journal diameter (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Main journal Diameter: 1.9661—1.9667 in (49.938—49.956 mm)Main journal Diameter: 49.938—49.956mm {1.9661—1.9667 in}

Crankshaft crankpin journal diameter (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Crankpin journal Diameter: 1.7693—1.7699 in (44.940—44.956 mm)Crankpin journal Diameter: 44.940—44.956mm {1.7693—1.7699 in}

Crankshaft journal out-of-round (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Main journal Out-of-round: 0.0020 in (0.05 mm) max. Crankpin journal Out-of-round: 0.0020 in (0.05 mm) max.Main journal Out-of-round: 0.05mm {0.0020 in} max. Crankpin journal Out-of-round: 0.05mm {0.0020 in} max.

Crankshaft main bearing oil clearance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Oil clearance: 0.0008—0.0014 in (0.018—0.036 mm) Maximum: 0.004 in (0.10 mm)Oil clearance: 0.018—0.036mm {0.0008—0.0014 in} Maximum: 0.10mm {0.004 in}

Crankshaft end play (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

End play: 0.0032—0.0111 in (0.080—0.282 mm) Maximum: 0.012 in (0.30 mm)End play: 0.080—0.282mm {0.0032—0.0111 in} Maximum: 0.30mm {0.012 in}

Crankshaft thrust bearing width by size (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Thrust bearing width Standard: 0.0985—0.1003 in (2.500—2.550 mm) 0.010 in (0.25 mm) oversize: 0.1034—0.1053 in (2.625—2.675 mm) 0.020 in (0.50 mm) oversize: 0.1083—0.1102 in (2.750—2.800 mm) 0.030 in (0.75 mm) oversize: 0.1132—0.1151 in (2.875—2.925 mm)Thrust bearing width Standard: 2.500—2.550mm {0.0985—0.1003 in} 0.25mm {0.010 in} oversize: 2.625—2.675mm {0.1034—0.1053 in} 0.50mm {0.020 in} oversize: 2.750—2.800mm {0.1083—0.1102 in} 0.75mm {0.030 in} oversize: 2.875—2.925mm {0.1132—0.1151 in}

Connecting rod bearing oil clearance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Oil clearance: 0.0008—0.0017 in (0.020—0.044 mm) Maximum: 0.004 in (0.10 mm)Oil clearance: 0.020—0.044mm {0.0008—0.0017 in} Maximum: 0.10mm {0.004 in}

Connecting rod side clearance (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Side clearance: 0.0044—0.0103 in (0.110—0.262 mm) Maximum: 0.012 in (0.30 mm)Side clearance: 0.110—0.262mm {0.0044—0.0103 in} Maximum: 0.30mm {0.012 in}

Cylinder head gasket-face distortion (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Distortion 0.004 in (0.10 mm) max.Distortion 0.10 mm {0.004 in} max.

Cylinder head height (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard height 5.268—5.275 in (133.8—134.0 mm)Standard height 133.8—134.0 mm {5.268—5.275 in}

Cylinder head gasket-face grinding allowance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Grinding 0.004 in (0.10 mm) max.Grinding 0.10 mm {0.004 in} max.

Cylinder head manifold contact-face distortion (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Distortion 0.006 in (0.15 mm) max.Distortion 0.15 mm {0.006 in} max.

Cylinder head manifold contact-face grinding allowance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Grinding 0.008 in (0.20 mm) max.Grinding 0.20 mm {0.008 in} max.

Valve head margin thickness (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Margin thickness IN: 0.035 in (0.9 mm) min. EX: 0.039 in (1.0 mm) min.Margin thickness IN: 0.9 mm {0.035 in} min. EX: 1.0 mm {0.039 in} min.

Valve overall length (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard length IN: 4.0044—4.0279 in (101.71—102.31 mm) EX: 4.0044—4.0279 in (101.71—102.31 mm) Minimum length IN: 4.0004 in (101.61 mm) EX: 4.0004 in (101.61 mm)Standard length IN: 101.71—102.31 mm {4.0044—4.0279 in} EX: 101.71—102.31 mm {4.0044—4.0279 in} Minimum length IN: 101.61 mm {4.0004 in} EX: 101.61 mm {4.0004 in}

Valve stem diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard diameter IN: 0.2351—0.2356 in (5.970—5.985 mm) EX: 0.2349—0.2354 in (5.965—5.980 mm) Minimum diameter IN: 0.2331 in (5.920 mm) EX: 0.2329 in (5.915 mm)Standard diameter IN: 5.970—5.985 mm {0.2351—0.2356 in} EX: 5.965—5.980 mm {0.2349—0.2354 in} Minimum diameter IN: 5.920 mm {0.2331 in} EX: 5.915 mm {0.2329 in}

Valve guide inner diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard inner diameter 0.2371—0.2377 in (6.02—6.04 mm)Standard inner diameter 6.02—6.04 mm {0.2371—0.2377 in}

Valve guide protrusion height (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard height 0.721—0.744 in (18.3—18.9 mm)Standard height 18.3—18.9 mm {0.721—0.744 in}

Valve seat contact width (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard width 0.032—0.055 in (0.8—1.4 mm)Standard width 0.8—1.4 mm {0.032—0.055 in}

Valve stem protrusion for seat sinking inspection (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard dimension L IN: 1.772 in (45.0 mm) EX: 1.772 in (45.0 mm) Maximum dimension L IN: 1.795 in (45.6 mm) EX: 1.795 in (45.6 mm)Standard dimension L IN: 45.0 mm {1.772 in} EX: 45.0 mm {1.772 in} Maximum dimension L IN: 45.6 mm {1.795 in} EX: 45.6 mm {1.795 in}

Valve spring loaded height and test force (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Pressing force IN: 38.72—43.78 lbf (172.60—195.15 N; 17.6—19.9 kgf) EX: 38.72—43.78 lbf (172.60—195.15 N; 17.6—19.9 kgf) Standard height IN: 1.56 in (39.5 mm) EX: 1.56 in (39.5 mm)Pressing force IN: 172.60—195.15 N {17.6—19.9 kgf, 38.72—43.78 lbf} EX: 172.60—195.15 N {17.6—19.9 kgf, 38.72—43.78 lbf} Standard height IN: 39.5 mm {1.56 in} EX: 39.5 mm {1.56 in}

Valve spring out-of-square (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Valve spring out-of-square (mm {in}) BP with TC IN 1.58 {0.062} max. EX 1.63 {0.064} max.Valve spring out-of-square (mm {in}) BP with TC IN 1.58 {0.062} max. EX 1.63 {0.064} max.

Camshaft runout (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Runout 0.0012 in (0.03 mm) max.Runout 0.03 mm {0.0012 in} max.

Camshaft lobe height (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard height (mm {in}) BP with TC IN 44.8 {1.764} EX 44.9 {1.768} Minimum height (mm {in}) BP with TC IN 44.6 {1.756} EX 44.7 {1.760}Standard height (mm {in}) BP with TC IN 44.8 {1.764} EX 44.9 {1.768} Minimum height (mm {in}) BP with TC IN 44.6 {1.756} EX 44.7 {1.760}

Camshaft journal diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard diameter 1.0213—1.0222 in (25.940—25.965 mm) Minimum diameter 1.0201 in (25.910 mm)Standard diameter 25.940—25.965 mm {1.0213—1.0222 in} Minimum diameter 25.910 mm {1.0201 in}

Tappet bore diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard diameter 1.1811—1.1820 in (30.000—30.025 mm)Standard diameter 30.000—30.025 mm {1.1811—1.1820 in}

Tappet outside diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard diameter 1.1795—1.1801 in (29.959—29.975 mm)Standard diameter 29.959—29.975 mm {1.1795—1.1801 in}

Tappet-to-bore clearance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard clearance 0.00099—0.00259 in (0.025—0.066 mm) Maximum clearance 0.0071 in (0.180 mm)Standard clearance 0.025—0.066 mm {0.00099—0.00259 in} Maximum clearance 0.180 mm {0.0071 in}

Cylinder block deck distortion (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Cylinder block distortion 0.006 in (0.15 mm) max.Cylinder block distortion 0.15 mm {0.006 in} max.

Cylinder block height (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Cylinder block height 8.720 in (221.5 mm)Cylinder block height 221.5 mm {8.720 in}

Cylinder block deck grinding allowance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Grinding 0.008 in (0.20 mm) max.Grinding 0.20 mm {0.008 in} max.

Cylinder bore diameter by piston size (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Cylinder bore mm {in} Size Diameter Standard 83.000—83.019 {3.2678—3.2684} 0.25 {0.01} oversize 83.250—83.269 {3.2776—3.2783} 0.50 {0.02} oversize 83.500—83.519 {3.2874—3.2881} Wear limit 0.006 in (0.15 mm)Cylinder bore mm {in} Size Diameter Standard 83.000—83.019 {3.2678—3.2684} 0.25 {0.01} oversize 83.250—83.269 {3.2776—3.2783} 0.50 {0.02} oversize 83.500—83.519 {3.2874—3.2881} Wear limit 0.15 mm {0.006 in}

Oil jet inspection air pressure (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Air pressure 25—32 psi (167—225 kPa; 1.7—2.3 kgf/cm²)Air pressure 167—225 kPa {1.7—2.3 kgf/cm², 25—32 psi}

Piston diameter by size (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Piston diameter mm {in} Size Diameter Standard 82.953—82.975 {3.2659—3.2667} 0.25 {0.01} oversize 83.203—83.225 {3.2758—3.2765} 0.50 {0.02} oversize 83.453—83.475 {3.2856—3.2864}Piston diameter mm {in} Size Diameter Standard 82.953—82.975 {3.2659—3.2667} 0.25 {0.01} oversize 83.203—83.225 {3.2758—3.2765} 0.50 {0.02} oversize 83.453—83.475 {3.2856—3.2864}

Piston-to-cylinder clearance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard clearance: ≈0.00098–0.0026 in (0.025–0.066 mm); maximum clearance: ≈0.00591 in (0.15 mm)Standard clearance: 0.025–0.066 mm; maximum clearance: 0.15 mm

Piston ring-to-land clearance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard clearance Top : 0.0012—0.0025 in (0.030—0.065 mm) Second : 0.0012—0.0027 in (0.030—0.070 mm) Oil : 0.003—0.006 in (0.07—0.16 mm) Maximum clearance Top, Second : 0.006 in (0.15 mm) Oil : 0.008 in (0.20 mm)Standard clearance Top : 0.030—0.065 mm {0.0012—0.0025 in} Second : 0.030—0.070 mm {0.0012—0.0027 in} Oil : 0.07—0.16 mm {0.003—0.006 in} Maximum clearance Top, Second : 0.15 mm {0.006 in} Oil : 0.20 mm {0.008 in}

Piston ring end gap (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard end gap Top : 0.006—0.011 in (0.15—0.30 mm) Second : 0.012—0.017 in (0.30—0.45 mm) Oil rail : 0.008—0.027 in (0.20—0.70 mm) Maximum end gap 0.039 in (1.0 mm)Standard end gap Top : 0.15—0.30 mm {0.006—0.011 in} Second : 0.30—0.45 mm {0.012—0.017 in} Oil rail : 0.20—0.70 mm {0.008—0.027 in} Maximum end gap 1.0 mm {0.039 in}

Piston pin hole diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard diameter 0.7870—0.7874 in (19.988—20.000 mm)Standard diameter 19.988—20.000 mm {0.7870—0.7874 in}

Connecting rod small-end inner diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard diameter 0.7876—0.7879 in (20.003—20.014 mm)Standard diameter 20.003—20.014 mm {0.7876—0.7879 in}

Piston pin diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard diameter 0.7869—0.7871 in (19.987—19.993 mm)Standard diameter 19.987—19.993 mm {0.7869—0.7871 in}

Piston pin-to-piston clearance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard clearance − 0.0002—0.0005 in (0.005—0.013 mm; −)Standard clearance − 0.005—0.013 mm {− 0.0002—0.0005 in}

Connecting rod small-end-to-pin clearance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard clearance: ≈0.00039–0.00106 in (0.010–0.027 mm)Standard clearance: 0.010–0.027 mm

Crankshaft runout (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Runout 0.0016 in (0.04 mm) max.Runout 0.04 mm {0.0016 in} max.

Crankshaft standard main journal diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Main Journal mm {in} Bearing size Diameter Standard 49.938—49.956 {1.9661—1.9667}Main Journal mm {in} Bearing size Diameter Standard 49.938—49.956 {1.9661—1.9667}

Crankshaft standard crankpin diameter (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Crank pin mm {in} Bearing size Diameter Standard 44.940—44.956 {1.7693—1.7699}Crank pin mm {in} Bearing size Diameter Standard 44.940—44.956 {1.7693—1.7699}

Crankshaft main journal out-of-round (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Out-of-round 0.002 in (0.05 mm) max.Out-of-round 0.05 mm {0.002 in} max.

Crankshaft crankpin out-of-round (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Out-of-round 0.002 in (0.05 mm) max.Out-of-round 0.05 mm {0.002 in} max.

Crankshaft main bearing oil clearance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard clearance 0.0008—0.0014 in (0.018—0.036 mm) Maximum clearance 0.0039 in (0.10 mm)Standard clearance 0.018—0.036 mm {0.0008—0.0014 in} Maximum clearance 0.10 mm {0.0039 in}

Crankshaft end play (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard end play 0.0032—0.0111 in (0.080—0.282 mm) Maximum end play 0.012 in (0.30 mm)Standard end play 0.080—0.282 mm {0.0032—0.0111 in} Maximum end play 0.30 mm {0.012 in}

Connecting rod bending (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Bending 0.0020 in (0.05 mm) max. /1.97 in (50 mm)Bending 0.05 mm {0.0020 in} max. /50 mm {1.97 in}

Connecting rod distortion (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Distortion 0.0028 in (0.07 mm) max. /1.97 in (50 mm)Distortion 0.07 mm {0.0028 in} max. /50 mm {1.97 in}

Connecting rod center-to-center length (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Center-to-center distance 5.2304—5.2342 in (132.85—132.95 mm)Center-to-center distance 132.85—132.95 mm {5.2304—5.2342 in}

Connecting rod bearing oil clearance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard clearance 0.0012—0.0018 in (0.028—0.048 mm) Maximum clearance 0.0039 in (0.10 mm)Standard clearance 0.028—0.048 mm {0.0012—0.0018 in} Maximum clearance 0.10 mm {0.0039 in}

Connecting rod side clearance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard clearance 0.005—0.010 in (0.110—0.262 mm) Maximum clearance 0.012 in (0.30 mm)Standard clearance 0.110—0.262 mm {0.005—0.010 in} Maximum clearance 0.30 mm {0.012 in}

Timing belt tensioner spring free length (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Free length 2.331 in (59.2 mm)Free length 59.2 mm {2.331 in}

Alternator belt deflection — new (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

5.5—7.0 {0.22—0.27} mm {in}5.5—7.0 {0.22—0.27} mm {in}

Alternator belt deflection — used (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

6.0—7.5 {0.24—0.29} mm {in}6.0—7.5 {0.24—0.29} mm {in}

Alternator belt deflection — limit (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

8.0 {0.31} mm {in}8.0 {0.31} mm {in}

P/S-only belt deflection — new (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

8.0—9.0 {0.32—0.35} mm {in}8.0—9.0 {0.32—0.35} mm {in}

P/S-only belt deflection — used (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

9.0—10.0 {0.36—0.39} mm {in}9.0—10.0 {0.36—0.39} mm {in}

P/S, P/S + A/C; A/C belt deflection — limit (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

11.5 {0.45} mm {in}11.5 {0.45} mm {in}

Alternator belt tension — new (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

491—745 {50—76, 110—167} N {kgf, lbf}491—745 {50—76, 110—167} N {kgf, lbf}

Alternator belt tension — used (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

491—706 {50—72, 110—158} N {kgf, lbf}491—706 {50—72, 110—158} N {kgf, lbf}

Alternator belt tension — limit (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

343 {35, 77} N {kgf, lbf}343 {35, 77} N {kgf, lbf}

P/S-only belt tension — used (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

422—490 {43—50, 95—110} N {kgf, lbf}422—490 {43—50, 95—110} N {kgf, lbf}

P/S, P/S + A/C; A/C belt tension — limit (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

245 {25, 55} N {kgf, lbf}245 {25, 55} N {kgf, lbf}

Generator belt deflection — new (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

5.5—7.0 {0.22—0.27} mm {in}5.5—7.0 {0.22—0.27} mm {in}

Generator belt deflection — used (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

6.0—7.5 {0.24—0.29} mm {in}6.0—7.5 {0.24—0.29} mm {in}

Generator belt deflection — limit (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

8.0 {0.31} mm {in}8.0 {0.31} mm {in}

P/S, A/C, P/S+A/C belt deflection — new (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

8.0—9.0 {0.32—0.35} mm {in}8.0—9.0 {0.32—0.35} mm {in}

P/S, A/C, P/S+A/C belt deflection — used (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

9.0—10.0 {0.36—0.39} mm {in}9.0—10.0 {0.36—0.39} mm {in}

P/S, A/C, P/S+A/C belt deflection — limit (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

11.5 {0.45} mm {in}11.5 {0.45} mm {in}

Generator belt tension — new (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

491—745 {50—76, 110—167} N {kgf, lbf}491—745 {50—76, 110—167} N {kgf, lbf}

Generator belt tension — used (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

491—706 {50—72, 110—158} N {kgf, lbf}491—706 {50—72, 110—158} N {kgf, lbf}

Generator belt tension — limit (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

343 {35, 77} N {kgf, lbf}343 {35, 77} N {kgf, lbf}

P/S, A/C, P/S+A/C belt tension — new (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

491—588 {50—60, 110—132} N {kgf, lbf}491—588 {50—60, 110—132} N {kgf, lbf}

P/S, A/C, P/S+A/C belt tension — used (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

422—490 {43—50, 95—110} N {kgf, lbf}422—490 {43—50, 95—110} N {kgf, lbf}

P/S, A/C, P/S+A/C belt tension — limit (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

245 {25, 55} N {kgf, lbf}245 {25, 55} N {kgf, lbf}

Compression pressure — minimum (NB2 and Mazdaspeed)

1,146 psi (009 kPa; 10.29 kgf/cm²) minimum at 300 rpm1,009 kPa {10.29 kgf/cm², 146 psi} minimum at 300 rpm

Compression pressure — maximum cylinder difference (NB2 and Mazdaspeed)

28 psi (196 kPa; 2.0 kgf/cm²) maximum difference between cylinders196 kPa {2.0 kgf/cm², 28 psi} maximum difference between cylinders

Compression pressure — standard (NB2 non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2005 factory evidence.

1,198 psi (363 kPa; 13.9 kgf/cm²) at 300 rpm1,363 kPa {13.9 kgf/cm², 198 psi} at 300 rpm

Compression pressure — standard (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2005 factory evidence; 2004 inferred within MSM family.

1,209 psi (442 kPa; 14.7 kgf/cm²) at 300 rpm1,442 kPa {14.7 kgf/cm², 209 psi} at 300 rpm

Camshaft journal oil clearance (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard: ≈0.00138–0.00319 in (0.035–0.081 mm); maximum: ≈0.00591 in (0.15 mm)Standard: 0.035–0.081 mm; maximum: 0.15 mm

Camshaft end play (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Standard: ≈0.00224–0.005 in (0.057–0.127 mm); maximum: ≈0.00787 in (0.20 mm)Standard: 0.057–0.127 mm; maximum: 0.20 mm

P/S-only belt tension — new (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

110–132 lbf (490–588 N; 50–60 kgf)490–588 N {50–60 kgf, 110–132 lbf}

Main bearing oil clearance — standard (NA6)

NA6 crankshaft inspection settings · NA 1990–1993 (B6) — 1991–1993 applicability inferred from 1990 within the NA6 group.

0.0007–0.0014 in (0.018–0.036 mm)0.018–0.036 mm (0.0007–0.0014 in)

Main bearing oil clearance — maximum (NA6)

NA6 crankshaft inspection settings · NA 1990–1993 (B6) — 1991–1993 applicability inferred from 1990 within the NA6 group.

0.004 in (0.10 mm)0.10 mm (0.004 in)

Crankshaft end play — standard (NA6)

NA6 crankshaft inspection settings · NA 1990–1993 (B6) — 1991–1993 applicability inferred from 1990 within the NA6 group.

0.0031–0.0111 in (0.080–0.282 mm)0.080–0.282 mm (0.0031–0.0111 in)

Crankshaft end play — maximum (NA6)

NA6 crankshaft inspection settings · NA 1990–1993 (B6) — 1991–1993 applicability inferred from 1990 within the NA6 group.

0.012 in (0.30 mm)0.30 mm (0.012 in)

Lubrication

Oil filter

Engine oil · NA 1990–1993 (B6)

Hand-tight until the seal touches, then 1 1/6 turnHand-tight until the seal touches, then 1 1/6 turn

Oil filter (1994–97)

Engine oil · NA 1994–1997 (BP)

Hand-tight until the seal touches, then 3/4 turn (filters with numbers printed on them) or 1 1/6 turns with a filter wrenchHand-tight until the seal touches, then 3/4 turn (filters with numbers printed on them) or 1 1/6 turns with a filter wrench

Oil filter (NB)

Engine oil · NB 1999–2000 (BP-4W)

As printed on the filter or its box, using the filter wrenchAs printed on the filter or its box, using the filter wrench

Engine oil pressure at 1,000 rpm (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

28–43 psi (196–294 kPa; 2.0–3.0 kg/cm²)–1,000 rpm196–294 kPa (2.0–3.0 kg/cm², 28–43 psi)–1,000 rpm

Engine oil pressure at 3,000 rpm (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

43–57 psi (294–392 kPa; 3.0–4.0 kg/cm²)–3,000 rpm294–392 kPa (3.0–4.0 kg/cm², 43–57 psi)–3,000 rpm

Engine oil pressure at 3,000 rpm (NB2 and Mazdaspeed)

43–56 psi (295–392 kPa; 3.0–4.0 kgf/cm²) at 3,000 rpm295–392 kPa {3.0–4.0 kgf/cm², 43–56 psi} at 3,000 rpm

Engine oil pressure at 1,000 rpm (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

15–28 psi (98–196 kPa; 1.0–2.0 kgf/cm²) at 1,000 rpm98–196 kPa {1.0–2.0 kgf/cm², 15–28 psi} at 1,000 rpm

Engine oil pressure at 3,000 rpm (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

43–56 psi (295–392 kPa; 3.0–4.0 kgf/cm²) at 3,000 rpm295–392 kPa {3.0–4.0 kgf/cm², 43–56 psi} at 3,000 rpm

Engine oil pressure at 3,000 rpm (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

43–56 psi (295–392 kPa; 3.0–4.0 kgf/cm²) at 3,000 rpm295–392 kPa {3.0–4.0 kgf/cm², 43–56 psi} at 3,000 rpm

Cooling

Cooling system leak test pressure (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

15 psi (103 kPa; 1.05 kg/cm²)103 kPa (1.05 kg/cm², 15 psi)

Radiator cap pressure test (NB2 and Mazdaspeed)

13.5–17.7 psi (94–122 kPa; 0.95–1.25 kgf/cm²); hold 10 s94–122 kPa {0.95–1.25 kgf/cm², 13.5–17.7 psi}; hold 10 s

Radiator cap pressure test (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

10.7–14.9 psi (73.6–102 kPa; 0.75–1.05 kgf/cm²); hold about 10 s73.6–102 kPa {0.75–1.05 kgf/cm², 10.7–14.9 psi}; hold about 10 s

Thermostat main valve initial opening temperature (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

188–193 °F (86.5–89.5 °C)86.5–89.5°C {188–193°F}

Thermostat sub valve initial opening temperature (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

183–187 °F (83.5–86.5 °C)83.5–86.5°C {183–187°F}

Thermostat full-open temperature (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

212 °F (100 °C)100°C {212°F}

Thermostat main valve full-open lift — minimum (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

0.31 in (8.0 mm) minimum at 212 °F (100 °C)8.0 mm {0.31 in} minimum at 100°C {212°F}

Thermostat sub valve full-open lift — minimum (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

0.06 in (1.5 mm) minimum at 212 °F (100 °C)1.5 mm {0.06 in} minimum at 100°C {212°F}

Radiator cap pressure test (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

13.5–17.7 psi (94–122 kPa; 0.95–1.25 kgf/cm²); hold 10 s94–122 kPa {0.95–1.25 kgf/cm², 13.5–17.7 psi}; hold 10 s

Thermostat initial opening temperature (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

183–190 °F (83.5–88.0 °C)83.5–88.0°C {183–190°F}

Thermostat full-open temperature (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

212 °F (100 °C)100°C {212°F}

Thermostat full-open lift — minimum (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

0.33 in (8.5 mm) minimum at 212 °F (100 °C)8.5 mm {0.33 in} minimum at 100°C {212°F}

Radiator cap pressure test (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

11–15 psi (74–103 kPa; 0.75–1.05 kg/cm²); hold about 10 s74–103 kPa (0.75–1.05 kg/cm², 11–15 psi); hold about 10 s

Thermostat main valve initial opening temperature (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

188–193 °F (86.5–89.5 °C)86.5–89.5°C {188–193°F}

Thermostat sub valve initial opening temperature (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

≈182.3–187.7 °F (83.5–86.5°C)83.5–86.5°C

Thermostat full-open temperature (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

212 °F (100 °C)100°C {212°F}

Thermostat main valve full-open lift — minimum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

0.31 in (8.0 mm) minimum at 212 °F (100 °C)8.0 mm {0.31 in} minimum at 100°C {212°F}

Thermostat sub valve full-open lift — minimum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

0.06 in (1.5 mm) minimum at 212 °F (100 °C)1.5 mm {0.06 in} minimum at 100°C {212°F}

Thermostat initial opening temperature (NB2 2004–2005, non-turbo)

Service measurements and fasteners · NB 2004–2005 (BP-Z3) — Actual 2004 and 2005 factory evidence; initial-opening range follows the 2003 procedure.

188–193 °F (86.5–89.5 °C)86.5–89.5°C {188–193°F}

Thermostat full-open temperature (NB2 2004–2005, non-turbo)

Service measurements and fasteners · NB 2004–2005 (BP-Z3) — Actual 2004 and 2005 factory evidence; initial-opening range follows the 2003 procedure.

212 °F (100 °C)100°C {212°F}

Thermostat full-open lift — minimum (NB2 2004–2005, non-turbo)

Service measurements and fasteners · NB 2004–2005 (BP-Z3) — Actual 2004 and 2005 factory evidence; initial-opening range follows the 2003 procedure.

0.33 in (8.5 mm) minimum at 212 °F (100 °C)8.5 mm {0.33 in} minimum at 100°C {212°F}

Thermostat initial opening temperature (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2005 factory evidence; 2004 Mazdaspeed inferred within MSM family.

188–193 °F (86.5–89.5 °C)86.5–89.5°C {188–193°F}

Thermostat full-open temperature (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2005 factory evidence; 2004 Mazdaspeed inferred within MSM family.

212 °F (100 °C)100°C {212°F}

Thermostat full-open lift — minimum (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO) — 2005 factory evidence; 2004 Mazdaspeed inferred within MSM family.

0.33 in (8.5 mm) minimum at 212 °F (100 °C)8.5 mm {0.33 in} minimum at 100°C {212°F}

Thermostat initial opening temperature (NB2 2001–2003, non-turbo)

Service measurements and fasteners · NB 2001–2003 (BP-Z3) — Actual 2003 procedure; 2001–2002 inferred within the NB2 family.

188–193 °F (86.5–89.5 °C)86.5–89.5°C {188–193°F}

Thermostat full-open temperature (NB2 2001–2003, non-turbo)

Service measurements and fasteners · NB 2001–2003 (BP-Z3) — Actual 2003 procedure; 2001–2002 inferred within the NB2 family.

212 °F (100 °C)100°C {212°F}

Thermostat full-open lift — minimum (NB2 2001–2003, non-turbo)

Service measurements and fasteners · NB 2001–2003 (BP-Z3) — Actual 2003 procedure; 2001–2002 inferred within the NB2 family.

0.33 in (8.5 mm) minimum at 212 °F (100 °C)8.5 mm {0.33 in} minimum at 100°C {212°F}

Fuel & Intake

Engine idle speed — adjustment condition (NA6)

Service measurements and fasteners · NA 1990–1993 (B6, 5MT) — Other years inferred from 1990 factory evidence.

850 ± 50 rpm (Neutral)850 ± 50 rpm (Neutral)

Accelerator cable free play (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

0.039–0.118 in (1–3 mm)1–3 mm (0.039–0.118 in)

Fuel injector resistance (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

12–16 (at ≈68 °F (20°C), 68°F) Ω12–16 (at 20°C, 68°F) Ω

ISC valve solenoid resistance (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

11–13 (at ≈68 °F (20°C), 68°F) Ω11–13 (at 20°C, 68°F) Ω

Fuel pump maximum pressure — blocked-outlet test (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

64–85 psi (441–589 kPa; 4.5–6.0 kg/cm²)441–589 kPa (4.5–6.0 kg/cm², 64–85 psi)

Fuel line pressure — engine off, pump operating (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

38–46 psi (265–314 kPa; 2.7–3.2 kg/cm²)265–314 kPa (2.7–3.2 kg/cm², 38–46 psi)

Fuel line pressure — engine idling (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

31–38 psi (216–265 kPa; 2.2–2.7 kg/cm²)216–265 kPa (2.2–2.7 kg/cm², 31–38 psi)

Fuel injector resistance (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

12–13 ohms at 68 °F (20 °C)12–13 ohms at 20°C {68°F}

Fuel injector leakage limit (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

Less than 1 drop in 2 minLess than 1 drop in 2 min

Fuel injector injection volume (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

≈2.2317–2.7727 US fl oz (66–82 ml) per 15 s66–82 ml per 15 s

Fuel pump maximum-pressure inspection limit (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

Less than 92 psi (637 kPa; 6.5 kgf/cm²)Less than 637 kPa {6.5 kgf/cm², 92 psi}

Fuel pump residual hold pressure (NB2, non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.

More than 50 psi (343 kPa; 3.5 kgf/cm²) after 5 minMore than 343 kPa {3.5 kgf/cm², 50 psi} after 5 min

Engine idle speed (NB2 and Mazdaspeed)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred within NB2 non-turbo family from actual 2003/2005 factory evidence.; NB 2004–2005 (BP-Z3-TURBO) — Actual2005 factory evidence; 2004 inferred within MSM family.

750–850 rpm (800 ± 50 rpm)750–850 rpm (800 ± 50 rpm)

Idle-up speed — electrical loads, manual transmission (NB2 non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 5MT/6MT) — Other years inferred within NB2 non-turbo family from actual 2003/2005 factory evidence.

750–850 rpm (800 ± 50 rpm)750–850 rpm (800 ± 50 rpm)

Idle-up speed — electrical loads (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO, 6MT) — Actual2005 factory evidence; 2004 inferred within MSM family.

800–900 rpm (850 ± 50 rpm)800–900 rpm (850 ± 50 rpm)

Idle-up speed — power steering, manual transmission (NB2 and Mazdaspeed)

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 5MT/6MT) — Other years inferred within NB2 non-turbo family from actual 2003/2005 factory evidence.; NB 2004–2005 (BP-Z3-TURBO, 6MT) — Actual2005 factory evidence; 2004 inferred within MSM family.

750–850 rpm (800 ± 50 rpm)750–850 rpm (800 ± 50 rpm)

Idle-up speed — A/C, manual transmission (NB2 and Mazdaspeed)

950–1050 rpm (1000 ± 50 rpm)950–1050 rpm (1000 ± 50 rpm)

Idle-up speed — automatic in Neutral or Park (NB2 non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 4AT) — Other years inferred within NB2 non-turbo family from actual 2003/2005 factory evidence.

750–850 rpm (800 ± 50 rpm)750–850 rpm (800 ± 50 rpm)

Idle-up speed — automatic in Drive (NB2 non-turbo)

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 4AT) — Other years inferred within NB2 non-turbo family from actual 2003/2005 factory evidence.

700–800 rpm (750 ± 50 rpm)700–800 rpm (750 ± 50 rpm)

Engine idle speed — adjustment condition (NA8 MT)

Service measurements and fasteners · NA 1994–1997 (BP, 5MT) — Other years inferred from 1994 factory evidence.

800–900 (850 ± 50) rpm, Neutral800–900 (850 ± 50) rpm, Neutral

Engine idle speed — adjustment condition (NA8 AT)

Service measurements and fasteners · NA 1994–1997 (BP, 4AT) — Other years inferred from 1994 factory evidence.

750–850 (800 ± 50) rpm, P range750–850 (800 ± 50) rpm, P range

Ignition & Electrical

Spark plug gap (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

0.039–0.043 in (1.0–1.1 mm)1.0–1.1 mm (0.039–0.043 in)

Engine firing order (NA6)

Service measurements and fasteners · NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

1–3–4–2; cylinder 1 is at engine front.1–3–4–2; cylinder 1 is at engine front.

Base ignition timing (NA6)

Service measurements and fasteners · NA 1990–1993 (B6, 5MT) — Other years inferred from 1990 factory evidence.

10° ± 1° BTDC at idle speed10° ± 1° BTDC at idle speed

Spark plug gap (NA 1.8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

0.040–0.043 in (1.0–1.1 mm)1.0–1.1 mm (0.040–0.043 in)

Spark plug gap (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.

0.040–0.043 in (1.0–1.1 mm)1.0–1.1 mm (0.040–0.043 in)

Spark plug gap (NB2)

Service measurements and fasteners · NB 2001–2005 (BP-Z3) — Other years inferred from 2005 factory evidence.

0.040–0.043 in (1.0–1.1 mm)1.0–1.1 mm (0.040–0.043 in)

Spark plug gap (Mazdaspeed)

Service measurements and fasteners · NB 2004–2005 (BP-Z3-TURBO, 6MT) — 2004 applicability inferred from 2005 BP WITH TC factory evidence within the MSM family.

0.028–0.031 in (0.7–0.8 mm)0.7–0.8 mm (0.028–0.031 in)

Ignition timing at normal idle (NB2 and Mazdaspeed)

6–18° BTDC at 750–850 rpm6–18° BTDC at 750–850 rpm

Ignition timing — test mode (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

9–11° BTDC (10° ± 1°)9–11° BTDC (10° ± 1°)

Ignition timing — normal control check (NA8)

Service measurements and fasteners · NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

6–18° BTDC6–18° BTDC

Ignition timing — test mode (NB2 and Mazdaspeed)

9–11° BTDC (10 ± 1°) at 750–850 rpm9–11° BTDC (10 ± 1°) at 750–850 rpm

Clutch

Clutch pedal height (NA6)

Service measurements and fasteners · NA 1990–1993 (B6, 5MT) — Other years inferred from 1990 factory evidence.

6.89–7.28 in (175–185 mm)175–185 mm (6.89–7.28 in)

Clutch pedal free play (NA6)

Service measurements and fasteners · NA 1990–1993 (B6, 5MT) — Other years inferred from 1990 factory evidence.

0.02–0.12 in (0.6–3.1 mm)0.6–3.1 mm (0.02–0.12 in)

Clutch pedal total free play (NA6)

Service measurements and fasteners · NA 1990–1993 (B6, 5MT) — Other years inferred from 1990 factory evidence.

0.20–0.51 in (5–13 mm)5–13 mm (0.20–0.51 in)

Clutch pedal disengagement height — minimum (NA6)

Service measurements and fasteners · NA 1990–1993 (B6, 5MT) — Other years inferred from 1990 factory evidence.

2.68 in (68 mm)68 mm (2.68 in)

Clutch pedal height (NA 1.8)

Service measurements and fasteners · NA 1994–1997 (BP, 5MT) — Other years inferred from 1994 factory evidence.

175–185 mm (with carpet)175–185 mm (with carpet)

Clutch pedal free play (NA 1.8)

Service measurements and fasteners · NA 1994–1997 (BP, 5MT) — Other years inferred from 1994 factory evidence.

≈0.02362–0.12205 in (0.6–3.1 mm)0.6–3.1 mm

Clutch pedal total free play (NA 1.8)

Service measurements and fasteners · NA 1994–1997 (BP, 5MT) — Other years inferred from 1994 factory evidence.

0.20–0.51 in (5–13 mm)5–13 mm (0.20–0.51 in)

Clutch pedal minimum disengagement height (NA 1.8)

Service measurements and fasteners · NA 1994–1997 (BP, 5MT) — Other years inferred from 1994 factory evidence.

2.68 in (68 mm), minimum, with carpet68 mm (2.68 in), minimum, with carpet

Clutch pedal height (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W, 5MT/6MT) — Other years inferred from 1999 factory evidence.

175–180 mm (with carpet)175–180 mm (with carpet)

Clutch pedal free play (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W, 5MT/6MT) — Other years inferred from 1999 factory evidence.

≈0.02362–0.12205 in (0.6–3.1 mm)0.6–3.1 mm

Clutch pedal total free play (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W, 5MT/6MT) — Other years inferred from 1999 factory evidence.

0.20–0.51 in (5–13 mm)5–13 mm (0.20–0.51 in)

Clutch pedal minimum disengagement height (NB1)

Service measurements and fasteners · NB 1999–2000 (BP-4W, 5MT/6MT) — Other years inferred from 1999 factory evidence.

2.68 in (68 mm), minimum, with carpet68 mm (2.68 in), minimum, with carpet

Clutch pedal height (NB2)

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 5MT/6MT) — Other years inferred from 2005 factory evidence.

175–180 mm (with carpet)175–180 mm (with carpet)

Clutch pedal free play (NB2)

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 5MT/6MT) — Other years inferred from 2005 factory evidence.

≈0.02362–0.12205 in (0.6–3.1 mm)0.6–3.1 mm

Clutch pedal total free play (NB2)

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 5MT/6MT) — Other years inferred from 2005 factory evidence.

0.20–0.51 in (5–13 mm)5–13 mm (0.20–0.51 in)

Clutch pedal minimum disengagement height (NB2)

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 5MT/6MT) — Other years inferred from 2005 factory evidence.

2.68 in (68 mm), minimum, with carpet68 mm (2.68 in), minimum, with carpet

Clutch disc lining above rivet head — minimum

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 5MT/6MT) — Other years inferred from 2005 factory evidence.

0.012 in (0.3 mm), minimum0.3 mm (0.012 in), minimum

Clutch disc runout — maximum

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 5MT/6MT) — Other years inferred from 2005 factory evidence.

0.028 in (0.7 mm), maximum0.7 mm (0.028 in), maximum

Transmission

Drive gear thrust clearances (Y16M-D 6MT)

Service measurements and fasteners · NB 2001–2005 (BP-Z3, 6MT) — 2003 factory component-manual evidence; other years inferred within the 2001–2005 normally aspirated NB2 family. Does not infer MSM.

Thrust clearance (mm {in}) 1st 0.15–0.40 {0.006–0.015} 2nd 0.10–0.45 {0.004–0.017} 3rd 0.10–0.35 {0.004–0.013} 4th 0.10–0.35 {0.004–0.013} 6th 0.10–0.40 {0.004–0.015} Reverse 0.10–0.45 {0.004–0.017}Thrust clearance (mm {in}) 1st 0.15–0.40 {0.006–0.015} 2nd 0.10–0.45 {0.004–0.017} 3rd 0.10–0.35 {0.004–0.013} 4th 0.10–0.35 {0.004–0.013} 6th 0.10–0.40 {0.004–0.015} Reverse 0.10–0.45 {0.004–0.017}

Drive gear radial clearances (Y16M-D 6MT)

Radial clearance (mm {in}) 1st 0.015–0.066 {0.0006–0.0025} 2nd 0.015–0.066 {0.0006–0.0025} 3rd 0.015–0.068 {0.0006–0.0026} 4th 0.065–0.115 {0.0026–0.0045} 5th (Drive gear) 0.029–0.072 {0.0012–0.0028} 6th 0.015–0.068 {0.0006–0.0026} Reverse 0.015–0.066 {0.0006–0.0025}Radial clearance (mm {in}) 1st 0.015–0.066 {0.0006–0.0025} 2nd 0.015–0.066 {0.0006–0.0025} 3rd 0.015–0.068 {0.0006–0.0026} 4th 0.065–0.115 {0.0026–0.0045} 5th (Drive gear) 0.029–0.072 {0.0012–0.0028} 6th 0.015–0.068 {0.0006–0.0026} Reverse 0.015–0.066 {0.0006–0.0025}

Reverse idler gear to shaft radial clearance (Y16M-D 6MT)

Radial clearance 0.0016–0.0032 in (0.040–0.082 mm)Radial clearance 0.040–0.082 mm {0.0016–0.0032 in}

Synchronizer ring to gear flank clearances (Y16M-D 6MT)

1st/2nd/3rd gears: inner ring ≈0.03858–0.06378 in (0.98–1.62 mm); middle ring ≈0.02677–0.07559 in (0.68–1.92 mm); synchronizer ring ≈0.03465–0.06772 in (0.88–1.72 mm). 4th/5th: ≈0.0315–0.06299 in (0.80–1.60 mm). 6th/reverse: ≈0.03465–0.05984 in (0.88–1.52 mm).1st/2nd/3rd gears: inner ring 0.98–1.62 mm; middle ring 0.68–1.92 mm; synchronizer ring 0.88–1.72 mm. 4th/5th: 0.80–1.60 mm. 6th/reverse: 0.88–1.52 mm.

Mainshaft runout — maximum (Y16M-D 6MT)

Maximum runout 0.0012 in (0.03 mm)Maximum runout 0.03 mm {0.0012 in}

Countershaft runout — maximum (Y16M-D 6MT)

Maximum runout 0.0012 in (0.03 mm)Maximum runout 0.03 mm {0.0012 in}

Shift fork to clutch hub sleeve clearance (Y16M-D 6MT)

Clearance 0.006–0.013 in (0.15–0.35 mm)Clearance 0.15–0.35 mm {0.006–0.013 in}

4th gear inner race to thrust washer selection clearance (Y16M-D 6MT)