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

DIMENSIONS
Piston Ring Groove Clearance:
New:
Compression Rings 0.06-0.09 mm (0.0024-0.0036 inch)
Oil Scraper Ring 0.03-0.06 mm (0.0012-0.0024 inch)
Wear Limit:
Compression Rings 0.20 mm (0.0078 inch)
Oil Scraper Ring 0.15 (0.0059 inch)

Piston Ring End Gap:
New:
Compression Rings 0.20-0.40 mm (0.0078-0.0157 inch)
Oil Scraper Ring 0.25-0.50 mm (0.0098-0.0197 inch)
Wear Limit:
Compression Rings 0.80 mm (0.0315 inch)
Oil Scraper Ring 0.80 mm (0.0315 inch)