Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Piston: Specifications

Pistons and Rings





Piston diameter
Standard 93.955 to 93.965 mm (3.6990 to 3.6994 in.)
Minimum 93.830 mm (3.6941 in.)

Piston oil clearance
Standard 0.035 to 0.057 mm (0.0014 to 0.0022 in.)
Maximum 0.370 mm (0.0146 in.)

Standard ring groove clearance

Standard ring groove clearance:





Standard ring end gap

Standard ring end gap:





Maximum ring end gap

Maximum ring end gap:





Standard piston pin hole inside diameter

Standard piston pin hole inside diameter:





Standard piston pin diameter

Standard piston pin diameter:





Piston pin oil clearance
Standard -0.002 to 0.004 mm (-0.0001 to 0.0002 in.)
Maximum 0.015 mm (0.0006 in.)