Piston Ring, Engine

Piston ring groove clearance
No.1 0.011 - 0.070 mm (0.0004 - 0.0028 inch)
No.2 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Piston ring end gap
STD No.1 0.300 - 0.470 mm (0.0118 - 0.0185 inch)
No.2 0.350 - 0.520 mm (0.0138 - 0.0205 inch)
Oil 0.130 - 0.450 mm (0.0051 - 0.0177 inch)
Maximum No.1 1.07 mm (0.0421 inch)
No.2 1.12 mm (0.0441 inch)
Oil 1.05 mm (0.0413 inch)