Updated specs are available.
Valve spring out-of-square — maximum (NA6)
This spec doesn't apply to the car you selected.
Not yet checked against the factory manual for your car's year. It's verified in the 1990 Mazda MX-5 Miata Workshop Manual; later manuals may differ.
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.
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Check spring squareness on a flat surface; replace if out of specification.
Applies to
- NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.
- Verified in: 1990 Mazda MX-5 Miata Workshop Manual
Sources (1)
View 1 source citations
Page B–52 (PDF p. 79) · Printed value & notes
Part no. 1193-10-89CPage B–52 (PDF p. 79)Printed: “Out-of-square IN: 1.68mm (0.0661 in) max. EX: 1.69mm (0.0665 in) max.”
Related service specs
- Accessory drive belt deflection — new belt (NA6)
- Accessory drive belt tension — new belt (NA6)
- Accessory drive belt deflection — used belt (NA6)
- Accessory drive belt tension — used belt (NA6)
- Compression pressure — standard (NA6)
- Compression pressure — minimum (NA6)
- Compression pressure — maximum cylinder difference (NA6)
- Cylinder head gasket face distortion — maximum (NA6)