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

Piston and Connecting Rod
Piston diameter - coded red 1 90.177-90.197 mm (3.550-3.551 inch)
Piston diameter - coded blue 2 90.190-90.210 mm (3.5507-3.5515 inch)
Piston diameter - coded yellow 3 90.203-90.223 mm (3.513-3.5521 inch)
Piston-to-cylinder bore clearance 0.012-0.0026 mm (0.0005-0.001 inch)
Piston ring end gap - compression (top and bottom) 0.23-0.49 mm (0.010-0.020 inch)
Piston ring end gap - oil ring (steel rail) 0.05-0.66 mm (0.006-0.026 inch)
Piston ring groove width compression (top) 1.520-1.550 mm (0.060-0.610 inch)