Updated specs are available.
Valve spring loaded height and load (NA8)
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 1994 Mazda MX-5 Miata Workshop Manual; later manuals may differ.
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}
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
This is the source loaded-height/load specification, not a 39.5 mm unloaded free-length wear limit. Preserve its exact Minimum length wording.
Applies to
- NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.
- Verified in: 1994 Mazda MX-5 Miata Workshop Manual
Sources (1)
View 1 source citations
- 1994 Mazda MX-5 Miata Workshop ManualTier 1
Page B–51 (PDF p. 88) · Printed value & notes
Page B–51 (PDF p. 88)Printed: “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}”
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