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
Oil Control Ring 0.07-0.095 mm 0.0028-0.0037 in
Piston Ring Thickness
First Compression Ring 1.164-1.190 mm 0.046-0.047 in
Second Compression Ring 1.460-1.490 mm 0.0574-0.0586 in
Oil Control Ring - Maximum 2.960 mm 0.116 in