Piston Dimensions and Clearances

Diameter:
Standard 91.08 - 91.10 mm (3.5521 - 3.5529 inch)
Clearance:
Piston To Cylinder 0.02 - 0.04 mm (0.0008 - 0.0016 inch)
Ring Groove Width:
No.1 1.21 - 1.23 mm (0.0472 - 0.0480 inch)
No.2 1.51 - 1.53 mm (0.0594 - 0.0602 inch)
Oil 3.010 - 3.035 mm (0.1179 - 0.1184 inch)
Piston For Service:
0.25 mm (0.010 inch), 0.50 mm (0.020 inch)
0.75 mm (0.030 inch), 1.00 mm (0.040 inch)
Oversize