Piston, Engine

Piston diameter - coated, grade 1 88.990 - 89.010 mm (3.5035 - 3.5043 inch)
Piston diameter - coated, grade 2 88.998 - 89.022 mm (3.5039 - 3.5048 inch)
Piston diameter - coated, grade 3 89.010 - 89.030 mm (3,5043 - 3,5051 inch)
Piston diameter - uncoated, grade 1 88.970 - 88.980 mm (3.5027 - 3.5031 inch)
Piston diameter - uncoated, grade 2 88.978 - 88.992 mm (3.5030 - 3.5036 inch)
Piston diameter - uncoated, grade 3 88.990 - 89.000 mm (3.5035 - 3.5039 inch)
Piston-to-cylinder bore clearance - uncoated 0.018 to 0.042 mm (0.0007 - 0.0016 inch)
Piston ring groove width - compression (top) 1.230 - 1.245 mm (0.0484 - 0.0490 inch)
Piston ring groove width compression (bottom) 1.530 - 1.545 mm (0.0602 - 0.0608 inch)
Piston ring groove width oil ring 2.530 - 2.555 mm (0.0996 - 0.1005 inch)
Piston pin bore diameter 21.015 - 21.020 mm (0.8273 - 0.8275 inch)
Piston pin diameter 21.011 - 21.013 mm (0.8271 - 0.8273 inch)
Piston pin length 60.51 - 60.08 mm (2.382 - 2.365 inch)
Piston pin-to-piston fit 0.002 to 0.009 mm (0.00007 - 0.00003 inch)