Showing specs for all NA & NB Miatas

Engine mount bracket to block bolts — left and right (NA6)

27–40 ft·lb36–54 N·m36–54 N·m27–40 ft·lb
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Bracket to block bolts, not the mount-to-crossmember nuts. Left mount has the same printed range on B–82 (PDF p. 109).

Applies to
  • NA 1990–1993 (B6) — Other years in this family inferred from 1990 factory evidence with owner approval; actual-year verification is separate.
  • Verified in: 1990 Mazda MX-5 Miata Workshop Manual
Sources
  • 1990 Mazda MX-5 Miata Workshop ManualTier 1
    Part no. 1193-10-89C
    Page B–80 (PDF p. 107)
    27–40 ft·lb (36–54 N·m)
    Printed: “36—54 N·m (3.7—5.5 m-kg, 27—40 ft-lb)”
  • 1990 Mazda MX-5 Miata Workshop ManualTier 1
    Part no. 1193-10-89C
    Page B–82 (PDF p. 109)
    27–40 ft·lb (36–54 N·m)
    Printed: “36—54 N·m (3.7—5.5 m-kg, 27—40 ft-lb)”
    Left-side bracket; B–80 covers the right-side bracket.

Also in Additional factory manual gap audit