Piston Ring: Specifications

Piston Ring
End Gap First Compression Ring 0.15 - 0.36 mm (0.006 - 0.014 inch)
Second Compression Ring 0.5 - 0.71 mm (0.0197 - 0.0280 inch)
Oil Control Ring 0.25 - 1.02 mm (0.009 - 0.040 inch)
Piston Ring to Groove Clearance
First Compression Ring 0.04 - 0.086 mm (0.002 - 0.0033 inch)
Second Compression Ring 0.04 - 0.08 mm (0.002 - 0.0035 inch)
Oil Control Ring 0.07 - 0.095 mm (0.0028 - 0.0037 inch)
Piston Ring Thickness
First Compression Ring 1.164 - 1.190 mm (0.046 - 0.047 inch)
Second Compression Ring 1.470 - 1.490 mm (0.057 - 0.058 inch)
Oil Control Ring - Maximum 2.960 mm (0.116 inch)
Piston
Piston Ring Groove Width - Top 1.23 - 1.25 mm (0.048 - 0.049 inch)
Piston Ring Groove Width - Second 1.53 - 1.55 mm (0.060 - 0.061 inch)
Piston Ring Groove Width - Third 3.03 - 3.05 mm (0.119 - 0.120 inch)