Showing specs for all NA & NB Miatas

Crankshaft journal out-of-round (NA8)

Main journal Out-of-round: 0.0020 in (0.05 mm) max. Crankpin journal Out-of-round: 0.0020 in (0.05 mm) max.Main journal Out-of-round: 0.05mm {0.0020 in} max. Crankpin journal Out-of-round: 0.05mm {0.0020 in} max.

Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Both main journals and crankpins have the same printed limit.

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–57 (PDF p. 94) · Printed value & notes
    Page B–57 (PDF p. 94)
    Printed: “Main journal Out-of-round: 0.05mm {0.0020 in} max. Crankpin journal Out-of-round: 0.05mm {0.0020 in} max.”