Piston Ring, Engine

Piston ring

Piston ring gap mm (in)
Top ring Standard 0.20 - 0.25 (0.0079 - 0.0098)
Second ring Standard 0.40 - 0.50 (0.0157 - 0.0197)
Oil ring Standard 0.20 - 0.50 (0.0079 - 0.0197
Clearance piston ring groove mm (in)
Top ring Standard 0.040 - 0.080 (0.0016 - 0.0031)
Second ring Standard 0.030 - 0.070 (0.0012 - 0.0028)
Oil ring Standard 0.065 - 0.165 (0.0026 - 0.0065)