Piston Ring, Engine

Piston Ring End Gap
First Compression Ring 0.150 - 0.300 mm (0.0059 - 0.0118 inch)
Second Compression Ring 0.280 - 0.480 mm (0.0110 - 0.0189 inch)
Oil Control Ring 0.150 - 0.600 mm (0.0059 - 0.0236 inch)
Piston Ring to Groove Clearance
First Compression Ring 0.030 - 0.065 mm (0.0012 - 0.0026 inch)
Second Compression Ring 0.015 - 0.060 mm (0.0006 - 0.0024 inch)
Oil Control Ring 0.030 - 0.170 mm (0.0012 - 0.0067 inch)
Piston Ring Thickness
First Compression Ring 1.175 - 1.190 mm (0.0463 - 0.0469 inch)
Second Compression Ring 1.470 - 1.495 mm (0.0579 - 0.0589 inch)
Oil Control Ring 2.360 - 2.480 mm (0.0929 - 0.0976 inch)