Piston Ring, Engine

Piston Ring End Gap
First Compression Ring 0.25-0.46 mm (0.010-0.018 inch)
Second Compression Ring 0.58-0.84 mm (0.023-0.033 inch)
Piston Ring to Groove Clearance
First Compression Ring 0.033-0.079 mm (0.0013-0.0031 inch)
Second Compression Ring 0.033-0.079 mm (0.0013-0.0031 inch)
Piston Ring Thickness
First Compression Ring 1.176-1.197mm (0.0463-0.0471 inch)
Second Compression Ring 1.1476-1.497mm (0.0581-0.0589 inch)