Piston Ring Side Clearance
PISTON RING SIDE CLEARANCE
Measure the side clearance of piston ring and piston ring groove with feeler gauge.
Standard:
Top ring : 0.045 - 0.080 mm (0.0018 - 0.0031 inch)
2nd ring : 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Oil ring : 0.065 - 0.135 mm (0.0026 - 0.0053 inch)
Limit:
Top ring : 0.11 mm (0.0043 inch) 2nd ring : 0.1 mm (0.004 inch)
^ If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit, replace piston also.