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

Diameter 78.925-78.935 mm (3.1073-3.1077 inch)
Pin Clearance Interference Fit
Pin Diameter 20.004-20.013 mm (0.7876-0.7879 inch)
Piston-to-Cylinder Bore Clearance (Standard) 0.065-0.088 mm (0.0026-0.0035 inch)
Piston-to-Cylinder Bore Clearance (Maximum) 0.10 mm (0.0039 inch)
Ring End Gap - Lower Ring (Maximum) 1.20 mm (0.0472 inch)
Ring End Gap - Lower Ring (Standard) 0.35-0.50 mm (0.0138-0.0197 inch)
Ring End Gap - Oil Ring (Maximum) 1.05 mm (0.0413 inch)
Ring End Gap - Oil Ring (Standard) 0.15-0.40 mm (0.0059-0.0157 inch)
Ring End Gap - Top Ring (Maximum) 1.05 mm (0.0413 inch)
Ring End Gap - Top Ring (Standard) 0.25-0.35 mm (0.0098-0.0138 inch)
Ring Groove Clearance - Lower Compression Ring 0.030-0.070 mm (0.0012-0.0028 inch)
Ring Groove Clearance - Upper Compression Ring 0.030-0.070 mm (0.0012-0.0028 inch)