Showing specs for all NA & NB Miatas

Connecting rod bushing to piston pin clearance (NA6)

Clearance: 0.0004–0.0011 in (0.010–0.027 mm)Clearance: 0.010–0.027 mm (0.0004–0.0011 in)

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

Use the measured connecting-rod bushing inner diameter and piston-pin outer diameter; distinct from the piston-to-pin clearance.

Applies to
  • NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.
  • Verified in: 1990 Mazda MX-5 Miata Workshop Manual