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Crankshaft main bearing oil clearance (Mazdaspeed)

Standard clearance 0.0008—0.0014 in (0.018—0.036 mm) Maximum clearance 0.0039 in (0.10 mm)Standard clearance 0.018—0.036 mm {0.0008—0.0014 in} Maximum clearance 0.10 mm {0.0039 in}

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

Position Plastigage axially on journals, install caps using the cited assembly procedure, remove caps and measure. Replace bearings or grind for correct undersize bearings if excessive.

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 01–10–25 (PDF p. 37) · Printed value & notes
    Part no. 9999-95-EWBP-04
    Page 01–10–25 (PDF p. 37)
    Printed: “Standard clearance 0.018—0.036 mm {0.0008—0.0014 in} Maximum clearance 0.10 mm {0.0039 in}”

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