Showing specs for all NA & NB Miatas

Cylinder head bolts (NB2)

56–60 ft·lb76–81 N·m76–81 N·m56–60 ft·lb
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Tighten in two or three steps in the illustrated order on p. 655. Tighten in two or three steps in the illustrated sequence.

Applies to
  • NB 2001–2005 (BP-Z3)
  • NB 2004–2005 (BP-Z3-TURBO)
  • Verified in: 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture); 2004 Mazda Engine Workshop Manual BP (1.8L), normally aspirated and turbo
Sources
  • 2005 Mazda MX-5 Miata Workshop Manual (electronic manual capture)Tier 1
    Page PDF p. 654
    56–60 ft·lb (76–81 N·m)
    Printed: “76—81 {7.7—8.3, 56—60} N·m {kgf·m, ft·lbf}”
  • 2004 Mazda Engine Workshop Manual BP (1.8L), normally aspirated and turboTier 1
    Part no. 9999-95-EWBP-04
    Page 01–10–7 (PDF p. 19)
    56–60 ft·lb (76–81 N·m)
    Printed: “76—81 N·m {7.7—8.3 kgf·m, 56—60 ft·lbf}”
    BP WITH TC (Mazdaspeed) applicability; the normally aspirated BP workshop content does not establish applicability to the VVT engine.

Also in Cylinder head & camshafts