Updated specs are available.
Top and second piston ring to land clearance (NA6)
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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.
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)
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Use a new ring and check around the entire circumference; replace the piston if the maximum is exceeded. This is side clearance, not ring end gap.
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–56 (PDF p. 83) · Printed value & notes
Part no. 1193-10-89CPage B–56 (PDF p. 83)Printed: “Clearance (Top and Second): 0.03—0.07mm (0.0012—0.0028 in) Maximum: 0.15mm (0.006 in)”
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