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 0.0010 in
Measured at 31.5 mm from top of block. Measured at 43 mm from top of piston, at 90 degrees to the piston pin. h If applicable, measured vertically, +0.030 - 0.050 mm (0.001 - 0.002 inch) measured horizontally (oval pin bore)
Coded Red 1 3.55-3.551 in
Coded Blue 2 3.55-3.551 in
Coded Yellow 3 3.551-3.552 in
Coated piston-to-bore clearance (-0.002)/+0.001 in
Ring groove width Compression (Top) 0.06-0.061 in
Compression (Bottom) 0.06-0.061 in
Oil ring 0.12-0.12 in