Piston Ring, Engine

Piston ring groove clearance 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Piston ring end gap
STD
No.1 0.25 - 0.35 mm (0.0098 - 0.0138 inch)
No.2 0.35 - 0.50 mm (0.0138 - 0.0197 inch)
Oil 0.15 - 0.40 mm (0.0059 - 0.0157 inch)
Maximum
No.1 1.05 mm (0.0413 inch)
No.2 1.20 mm (0.0472 inch)
Oil 1.05 mm (0.0413 inch)