Piston Ring - End Gap

PISTON RING END GAP







End gap:
Top ring: 0.21 - 0.31 mm (0.0083 - 0.0122 inch)
2nd ring: 0.50 - 0.60 mm (0.0197 - 0.0236 inch)
Oil ring: 0.20 - 0.60 mm (0.0079 - 0.0236 inch)

Max. limit of ring gap:
Top ring: 0.43 mm (0.0169 inch)
2nd ring: 0.69 mm (0.0272 inch)
Oil ring: 0.84 mm (0.0331 inch)

If out of specification, replace piston ring. If gap still exceeds the limit even with a new ring, rebore cylinder and use oversized piston and piston rings. Refer to Engine; Specifications; Mechanical.

When replacing the piston, check the cylinder block surface for scratches or seizure. If scratches or seizure are found, hone or replace the cylinder block.