Piston, Engine

Diameter (Measured at the piston pin bore centerline at 90° to the pin)
Coded Red 3.9978 - 3.9984 inch
Coded Blue 3.9990 - 3.9996 inch
0.003 inch Oversize 4.0002 - 4.0008 inch
Piston to Bore Clearance Selective Fit 0.0018 - 0.0026 inch
Piston Pin Bore Diameter 0.9124 - 0.9127 inch
Ring Groove Width Compression
Top 0.080 - 0.081 inch
Bottom 0.080 - 0.081 inch
Oil 0.188 - 0.189 inch