Showing specs for all NA & NB Miatas

Mainshaft front bearing to housing shim clearance (NA8 5MT)

0–0.004 in (0–0.1 mm)0–0.1 mm {0–0.004 in}

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

After pressing the mainshaft front bearing into the bearing housing, measure the bearing-to-housing clearance and select adjustment shims. Printed shim thicknesses: 0.1 mm {0.004 in}, 0.15 mm {0.006 in}, 0.3 mm {0.012 in}.

Applies to
  • NA 1994–1997 (BP, 5MT) — 1995–1997 inferred from 1994 factory evidence; actual-year verification is separate.
  • Verified in: 1994 Mazda MX-5 Miata Workshop Manual

Sources (1)

View 1 source citations
  • 1994 Mazda MX-5 Miata Workshop ManualTier 1
    Page J–30 (PDF p. 384) · Printed value & notes
    Page J–30 (PDF p. 384)
    Printed: “Standard clearance: 0—0.1mm {0—0.004 in} Adjustment shim: 0.1mm {0.004 in}, 0.15mm {0.006 in}, 0.3mm {0.012 in}”