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

PISTON RING GAP AND GROOVE CLEARANCE

Piston Ring End Gap
First Compression Ring 0.15-0.30 mm (0.006-0.012 in)
Second Compression Ring 0.20-0.45 mm (0.008-0.018 in)
Oil Control Ring - Rails 0.15-0.51 mm (0.006-0.020 in)

Piston Ring to Groove Clearance
First Compression Ring 0.04-0.08 mm (0.0015-0.0031 in)
Second Compression Ring 0.030-0.070 mm (0.0012-0.0030 in)
Oil Control Ring 0.027-0.176 mm (0.0011-0.0069 in)