Piston Ring, Engine

PISTON RING END GAP





^ Check if the inner diameter of cylinder bore is within the specification. Refer to "Piston to Cylinder Bore Clearance".
^ Lubricate with new engine oil to piston and piston ring, and then insert piston ring until middle of cylinder with piston, and measure piston ring end gap with a feeler gauge.
Standard:
Top ring 0.22 - 0.32 mm (0.0087 - 0.0126 inch)
2nd ring 0.22 - 0.32 mm (0.0087 - 0.0126 inch)
Oil ring 0.20 - 0.50 mm (0.0079 - 0.0197 inch)
Limit:
Top ring 0.56 mm (0.0220 inch)
2nd ring 0.56 mm (0.0220 inch)
Oil ring 0.86 mm (0.0339 inch)
If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit, re-bore cylinder and use oversize piston and piston rings.