Showing specs for all NA & NB Miatas

Valve guide inner diameter (Mazdaspeed)

Standard inner diameter 0.2371—0.2377 in (6.02—6.04 mm)Standard inner diameter 6.02—6.04 mm {0.2371—0.2377 in}

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

Measure X and Y at three axial points; intake and exhaust guides are different parts.

Applies to
  • NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.
  • Verified in: 2004 Mazda Engine Workshop Manual BP (1.8L), normally aspirated and turbo

Sources (1)

View 1 source citations
  • 2004 Mazda Engine Workshop Manual BP (1.8L), normally aspirated and turboTier 1
    Page 01–10–19 (PDF p. 31) · Printed value & notes
    Part no. 9999-95-EWBP-04
    Page 01–10–19 (PDF p. 31)
    Printed: “Standard inner diameter 6.02—6.04 mm {0.2371—0.2377 in}”