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)

Or, hide this message: temporarily or permanently

Piston, Engine

Diameter Coded Red 1 3.550 - 3.551 Inch (in)
Coded Blue 2 3.5507 - 3.5515 Inch (in)
Coded Yellow 3 3.513 - 3.5521 Inch (in)
Piston-to-Bore-Clearance 0.0005 - 0.001 Inch (in)
Pin Bore Diameter 0.866 - 0.8663 Inch (in)
Ring Groove Width Compression (Top) 0.06 - 0.610 Inch (in)
Compression (Bottom) 0.060 - 0.0602 Inch (in)
Oil Ring 0.275 - 0.2844 Inch (in)