Showing specs for all NA & NB Miatas

Rear lower arm to knuckle bolt and nut (NB2)

≈46–55 ft·lb62.7–74.5 N·m62.7–74.5 N·m≈46–55 ft·lb
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Use the lower-arm procedure value, 62.7–74.5 N·m (2005 PDF p. 1113), corroborated by 63–74 N·m in the 1999–2000 manual (03–12–2) and 1994 manual (R–23). The owner authorized this earlier-year comparison for the same parts. The 2005 oil-seal procedure (p. 1174) prints 54–76 N·m and rear-hub diagram (p. 1142) prints 86.2–100.9 N·m; those conflicting claims are retained, not combined into a permissible tightening range. The p. 1142 imperial tuple is inconsistent and is omitted from structured units. Use printed N·m; inconsistent secondary units do not change the factory N·m value.

Applies to
  • NB 2001–2005 (BP-Z3)
  • NB 2004–2005 (BP-Z3-TURBO)
  • Verified in: 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture); 1999 Mazda MX-5 Miata Workshop Manual; 1994 Mazda MX-5 Miata Workshop Manual
Sources disagree. The factory manual value is shown; other published values are marked below.
Sources
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)Tier 1
    Page PDF p. 1174
    ≈40–56 ft·lb (54–76 N·m) — differs
    Printed: “54—76 N·m {5.5—7.8 kgf·m, 40—56 ft·lbf}”
    Printed N·m is authoritative per owner instruction. Secondary-unit misprints are preserved in as_printed but omitted from structured torque.
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)Tier 1
    Page PDF p. 1113
    ≈46–55 ft·lb (62.7–74.5 N·m)
    Printed: “62.7—74.5 {6.40—7.59, 46.3—54.9} N·m {kgf·m, ft·lbf}”
    Printed N·m is authoritative per owner instruction. Secondary-unit misprints are preserved in as_printed but omitted from structured torque.
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)Tier 1
    Page PDF p. 1142
    ≈64–74 ft·lb (86.2–100.9 N·m) — differs
    Printed: “86.2—100.9 {8.79—10.28, 7.63—8.93} N·m {kgf·m, ft·lbf}”
    Printed N·m is authoritative per owner instruction. Secondary-unit misprints are preserved in as_printed but omitted from structured torque.
  • Page 03–12–2
    ≈46–55 ft·lb (63–74 N·m)
    Printed: “63—74 {6.4—7.6, 47—54}”
    1999–2000 same-fastener corroboration, visually checked against PDF p. 347. It supports the 2005 lower-arm diagram, not the wider conflicting 2005 procedure ranges. Printed N·m is authoritative per owner instruction. Secondary-unit misprints are preserved in as_printed but omitted from structured torque.
  • 1994 Mazda MX-5 Miata Workshop ManualTier 1
    Page R–23
    ≈46–55 ft·lb (63–74 N·m)
    Printed: “63–74 {6.4–7.6, 47–54}”
    Earlier NA8 corroboration from the existing checked record. Printed N·m is authoritative per owner instruction. Secondary-unit misprints are preserved in as_printed but omitted from structured torque.