Piston Ring, Engine

Piston Ring End Gap
First Compression Ring 0. 15-0.36 mm (0.006-0.014 in.)
Second Compression Ring 0.48-0.74 mm (0.0188-0.0291 in.)
Oil Control Ring 0.25-0.77 mm (0.0098-0.0303 in.)
Piston Ring to Groove Clearance
First Compression Ring 0.04-0.086 mm (0.002-0.0033 in.)
Second Compression Ring 0.04-0.08 mm (0.002-0.0031 in.)
Piston Ring Groove Width
First 1.23-1.25 mm (0.048-0.049 in.)
Second 1.53-1.55 mm (0.060-0.061 in.)
Oil Control 3.03-3.055 mm (0.119-0.120 in.)