Showing specs for all NA & NB Miatas

Piston pin diameter (NA8)

Diameter: 0.7869—0.7871 in (19.987—19.993 mm)Diameter: 19.987—19.993mm {0.7869—0.7871 in}

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

Measure in X and Y directions at four specified points.

Applies to
  • NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.
  • Verified in: 1994 Mazda MX-5 Miata Workshop Manual