Piston Ring: Specifications

PISTON RING

Ring groove clearance:
No. 1 Ring 0.020 to 0.070 mm (0.0008 to 0.0028 in.)
No. 2 Ring 0.020 to 0.060 mm (0.0008 to 0.0024 in.)
Oil Ring 0.020 to 0.070 mm (0.0008 to 0.0028 in.)

Standard end gap:
No. 1 Ring 0.24 to 0.31 mm (0.0094 to 0.0122 in.)
No. 2 Ring 0.33 to 0.43 mm (0.0130 to 0.0169 in.)
Oil Ring 0.10 to 0.30 mm (0.0040 to 0.0119 in.)

Maximum end gap:
No. 1 Ring 0.89 mm (0.0350 in.)
No. 2 Ring 1.37 mm (0.0539 in.)
Oil Ring 0.73 mm (0.0287 in.)