Mountaineer RWD V6-4.0L (2008)
Piston Ring: Specifications
Piston Rings
Ring end gap
Top ........................................................................................................................................................................... 0.200-0.450 mm (0.008-0.018 in)
Bottom ......................................................................................................................................................................... 0.40-0.60 mm (0.016-0.024 in)
Ring groove width
Top ........................................................................................................................................................................... 1.23-1.25 mm (0.0484-0.0492 in)
Bottom ..................................................................................................................................................................... 1.52-1.54 mm (0.0598-0.0606 in)
Oil ring ..................................................................................................................................................................... 3.01-3.03 mm (0.1185-0.1193 in)
Ring width
Top ....................................................................................................................................................................... 1.175-1.190 mm (0.0463-0.0469 in)
Bottom ................................................................................................................................................................. 1.475-1.490 mm (0.0581-0.0587 in)
Ring-to-groove clearance
Top ....................................................................................................................................................................... 0.040-0.075 mm (0.0016-0.0030 in)
Bottom ................................................................................................................................................................. 0.030-0.065 mm (0.0012-0.0026 in)
Pin bore diameter ....................................................................................................................................................... 23.958-23.976 mm (0.943-0.944 in)
