Piston Ring, Engine
Piston ringPiston ring gap
Top ring
STD 0.20 - 0.25 mm (0.0079 - 0.0098 inch)
Limit 1.0 mm (0.039 inch)
Second ring
STD 0.35 - 0.50 mm (0.0138 - 0.0197 inch)
1.0 mm (0.039 inch)
Oil ring
STD 0.20 - 0.50 mm (0.0079 - 0.0197 inch)
Limit 1.5 mm (0 059 inch)
Clearance between piston ring and piston ring groove
Top ring
STD 0.055 - 0.090 mm (0.0022 - 0.0035 inch)
Limit 0.15 mm (0.0059 inch)
Second ring
STD 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Limit 0.15 mm (0 0059 inch)