STS RWD V8-4.6L (2007)
Piston: Specifications
Piston Diameter @ ............................................................................................. 42 mm ((1.6353 in) Below Crown 92.957-92.972 mm (3.6597-3.6603 in)
Piston Pin Bore Diameter .......................................................................................................................................... 23.002-23.007 mm (0.9056-0.9058 in)
Piston Ring Groove Inside Diameter
First Compression Ring ......................................................................................................................................... 84.750-85.000 mm (3.3366-3.3464 in)
Second Compression Ring ..................................................................................................................................... 83.400-83.650 mm (3.2835-3.2933 in)
Oil Control Ring .................................................................................................................................................... 85.670-85.920 mm (3.3728-3.3827 in)
Piston Ring Groove Width
First Compression Ring ............................................................................................................................................. 1.230-1.255 mm (0.0484-0.0494 in)
Second Compression Ring ......................................................................................................................................... 1.530-1.555 mm (0.0602-0.0612 in)
Oil Control Ring ........................................................................................................................................................ 2.530-2.555 mm (0.0996-0.1006 in)
Piston to Bore Clearance ................................................................................................................................................ 0.020-0.051 mm (0.0008-0.0020 in)