Piston Ring, Engine

Piston Rings
Piston Ring End Gap
^ First Compression Ring 0.15 - 0.3 mm (0.0059 - 0.0118 in)
^ Second Compression Ring 0.36 - 0.51 mm (0.0142 - 0.0201 in)
^ Oil Control Ring 0.250 - 0.760 mm (0.0098 - 0.0299 in)
Piston Ring to Groove Clearance
^ First Compression Ring 0.043 - 0.093 mm (0.0017 - 0.0037 in)
^ Second Compression Ring 0.043 - 0.093 mm (0.0017 - 0.0037 in)
^ Oil Control Ring 0.059 - 0.215 mm (0.0023 - 0.0085 in)