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Valve stem diameter (Mazdaspeed)

Standard diameter IN: 0.2351—0.2356 in (5.970—5.985 mm) EX: 0.2349—0.2354 in (5.965—5.980 mm) Minimum diameter IN: 0.2331 in (5.920 mm) EX: 0.2329 in (5.915 mm)Standard diameter IN: 5.970—5.985 mm {0.2351—0.2356 in} EX: 5.965—5.980 mm {0.2349—0.2354 in} Minimum diameter IN: 5.920 mm {0.2331 in} EX: 5.915 mm {0.2329 in}

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

Measure X and Y at three axial points on each stem.

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 diameter IN: 5.970—5.985 mm {0.2351—0.2356 in} EX: 5.965—5.980 mm {0.2349—0.2354 in} Minimum diameter IN: 5.920 mm {0.2331 in} EX: 5.915 mm {0.2329 in}”

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