Piston Ring, Engine

PISTON RING
Ring groove clearance 0.030 to 0.070 mm (0.0012 to 0.0028 in.)
Standard ring groove clearance
No.1 Ring 0.020 to 0.070 mm (0.0008 to 0.0028 in.)
No.2 Ring 0.020 to 0.060 mm (0.0008 to 0.0024 in.)
Oil (side rail) 0.020 to 0.070 mm (0.0008 to 0.0028 in.)