Showing specs for all NA & NB Miatas

Power plant frame main bolts (NB2)

≈77–91 ft·lb104–123 N·m104–123 N·m≈77–91 ft·lb
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Install sleeve and spacers, then tighten in the illustrated order. Verify PPF height after installation. Source prints ft·m; this malformed unit is preserved in the quotation and omitted from structured units. Use printed N·m; inconsistent secondary units do not change the factory N·m value.

Applies to
  • NB 2001–2005 (BP-Z3, 5MT/6MT)
  • NB 2004–2005 (BP-Z3-TURBO, 6MT)
  • Verified in: 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)
Sources
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)Tier 1
    Page PDF p. 1522
    ≈77–91 ft·lb (104–123 N·m)
    Printed: “104—123 N·m {10.6—12.6 kgf·m, 76.7—91.1 ft·lbf}”
    Printed N·m is authoritative per owner instruction. Secondary-unit misprints are preserved in as_printed but omitted from structured torque.
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)Tier 1
    Page PDF p. 1185
    ≈77–91 ft·lb (104–123 N·m)
    Printed: “104—123 N·m {10.6—12.6 kgf·m, 76.7—91.1 ft·m}”
    Printed N·m is authoritative per owner instruction. Secondary-unit misprints are preserved in as_printed but omitted from structured torque.

Also in Power plant frame (PPF)