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, Engine



Piston Diameters and Clearances:






Piston Pin Diameters
Outer Diameter 20.989-21.001 mm (0.8263-0.8268 in)
Interference Fit -0.002-0.01 mm (-0.0001-0.0004 in)

Rod Bushing Clearances
Standard 0.005-0.017 (0.0002-0.0007 in)
Limit 0.023 mm (0.0009 in)


Piston Side Clearances
Top
Standard 0.040-0.080 mm (0.0016-0.0031 in.)
Limit 0.1 mm (0.004 in.)
2nd
Standard 0.030-0.070 mm (0.0012-0.0028 in.)
Limit 0.1 mm (0.004 in.)
Oil 065-0.135 mm (0.0026-0.0053 in.)

Piston Ring Gaps
Top
Standard 0.28-0.52 mm (0.0110-0.0205 in.)
Limit 1.0 mm (0.039 in.)
2nd
Standard 0.45-0.69 mm (0.0177-0.0272 in.)
Limit 1.0 mm (0.039 in.)
Oil (rail ring)
Standard 0.20-0.69 mm (0.0079-0.0272 in.)
Limit 1.0 mm (0.039 in.)