Piston Ring End Gap

PISTON RING END GAP





^ Make sure that the cylinder bore inner diameter is within the specification. Refer to, "Cylinder Bore inner Diameter".
^ Lubricate with new engine oil to piston and piston ring, and then insert piston ring until middle of cylinder with piston, and measure the piston ring end gap with a feeler gauge.
Standard:
Top ring : 0.23 - 0.33 mm (0.0091 - 0.0130 inch)
2nd ring : 0.33 - 0.48 mm (0.0130 - 0.0189 inch)
Oil ring : 0.20 - 0.50 mm (0.0079 - 0.0197 inch)
Limit:
Top ring : 0.54 mm (0.0213 inch) 2nd ring :0.80 mm (0.0315 inch)
Oil ring : 0.95 mm (0.0374 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.