Piston, Engine

Piston Diameter:
Standard 3.1872 - 3.1879 inch (80.954 - 80.9720 mm)
0.010 inch (0.25 mm):
Oversize 3.197 - 3.1977 inch (81.204 - 81.222 mm)
0.020 inch (0.50 mm):
Oversize 3.2069 - 3.2076 inch (81.454 - 81.472 mm)
Piston To Cylinder Wall Clearance:
Standard 0.0015 - 0.0021 inch (0.039 - 0.053 mm)
Maximum 0.006 inch (0.15 mm)
Piston Ring To Piston Ring Groove Clearance:
Top Ring:
Standard Clearance 0.002 - 0.003 inch (0.04 - 0.08 mm)
Maximum Clearance 0.006 inch (0.15 mm)
Second Ring:
Standard Clearance 0.001 - 0.003 inch (0.03 - 0.07 mm)
Maximum Clearance 0.006 inch (0.15 mm)
Piston Pin Hole Diameter 0.7872 - 0.7875 inch (19.994 - 20.002 mm)