Showing specs for all NA & NB Miatas

5MT bearing cover bolts B, 35 mm (NA 1.8)

27–39 ft·lb37–53 N·m37–53 N·m27–39 ft·lb
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Group B bolts are 35 mm measured below the head; group A bolts are 28 mm and use a different torque. 1994 factory evidence; applicability to 1995–1997 is inferred within the owner-approved NA 1.8 year group.

Applies to
  • NA 1994–1997 (BP, 5MT)
  • Verified in: 1994 Mazda MX-5 Miata Workshop Manual
Sources
  • 1994 Mazda MX-5 Miata Workshop ManualTier 1
    Page J–30
    27–39 ft·lb (37–53 N·m)
    Printed: “37–53 N·m {3.7–5.5 kgf·m, 27–39 ft·lbf}”

Also in Additional 1994 factory service specifications