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 Ring, Engine

RING GAP:
Compression Rings 0.254 - 0.508 mm (0.010 - 0.020 inch)
Oil Control (Steel Rails) 0.381 - 1.397 mm (0.015 - 0.055 inch)

RING SIDE CLEARANCE:
Compression Rings 0.074 - 0.097 mm (0.0029 - 0.0038 inch)
Oil Ring (Steel Rails) 0.185 - 0.246 mm (0.0073 - 0.0097 inch)

RING WIDTH:
Compression Rings 4.115 - 4.369 mm (0.162 - 0.172 inch)
Oil Ring (Steel Rails) 2.591 - 2.743 mm (0.102 - 0.108 inch)