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 Ring, Engine

Dimensional Specifications
Piston Rings:
Upper compression ring:
Thickness 1.475 - 1.490 mm
Side clearance in groove 0.035 - 0.080 mm
Working gap in cylinder 0.300 - 0.500 mm
Lower compression ring:
Thickness 1.475 - 1.490 mm
Side clearance in groove 0.040 - 0.075 mm
Working gap in cylinder 0.300 - 0.500 mm
Oil scraper ring:
Thickness 2.500 mm
Working gap in cylinder 0.75 - 1.00 mm