Updated specs are available.
Exhaust valve clearance — cold (NB1)
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 1999 Mazda MX-5 Miata Workshop Manual; later manuals may differ.
≈0.01102–0.01339 in (0.28–0.34 mm)0.28–0.34 mm
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Cold engine only. Use the factory No.1/No.4 compression-TDC inspection positions with clockwise crankshaft rotation; correct clearance using the appropriate adjustment shim. Printed inch range is inconsistent with metric; preserve exact quotation and use printed metric under metric-first policy. Repeated in technical data 01–50–1 (PDF312).
Applies to
- NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.
- Verified in: 1999 Mazda MX-5 Miata Workshop Manual
Sources (1)
View 1 source citations
Page 01–10–3 (PDF p. 198) · Printed value & notes
Page 01–10–3 (PDF p. 198)Printed: “Standard [Engine cold] EX: 0.28—0.34 mm {0.012—0.013 in} (0.31 ± 0.03 mm {0.012 ± 0.0012 in})”
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