Piston: Specifications

Piston Diameter @ 42 mm (1.6353 inch) Below Crown 92.957 - 92.972 mm (3.6597 - 3.6603 inch)
Piston Pin Bore Diameter 23.002 - 23.007 mm (0.9056 - 0.9058 inch)
Piston Ring Groove Inside Diameter
First Compression Ring 84.750 - 85.000 mm (3.3366 - 3.3464 inch)
Second Compression Ring 83.400 - 83.650 mm (3.2835 - 3.2933 inch)
Oil Control Ring 85.670 - 85.920 mm (3.3728 - 3.3827 inch)
Piston Ring Groove Width
First Compression Ring 1.230 - 1.255 mm (0.0484 - 0.0494 inch)
Second Compression Ring 1.530 - 1.555 mm (0.0602 - 0.0612 inch)
Oil Control Ring 2.530 - 2.555 mm (0.0996 - 0.1006 inch)
Piston to Bore Clearance 0.020 - 0.051 mm (0.0008 - 0.0020 inch)