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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Piston










Piston

Standard 0.02 - 0.04 mm (0.0008 - 0.0016 in)

Piston -to-cylinder clearance 0.02 - 0.04 mm (0.0008 - 0.0016 in)

New bore size = piston O.D + 0.02 to 0.04 mm (0.0008 to 0.0016 in) (clearance between piston and cylinder) - 0.01 mm (0.0004 in) (honing margin.)

Standard diameter 76.47 - 76.50 mm (3.0106 - 3.0118 in)