Showing specs for all NA & NB Miatas

Crankshaft crankpin journal diameter (NA8)

Crankpin journal Diameter: 1.7693—1.7699 in (44.940—44.956 mm)Crankpin journal Diameter: 44.940—44.956mm {1.7693—1.7699 in}

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

Standard rod-journal diameter; measure X and Y directions at two axial points.

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