Explorer 2WD V8-4.6L (2008)
Piston: Specifications
Piston
Diameter (at right angle to pin bore) (uncoated)
Grade 1 ............................................................................................................................................................ 90.182-90.167 mm (3.5504-3.5499 in)
Grade 2 ............................................................................................................................................................. 90.196-90.179 mm (3.551-3.5503 in)
Grade 3 ............................................................................................................................................................. 90.208-90.193 mm (3.5515-3.551 in)
Clearance-to-cylinder bore (at grade size) ................................................................................................................. 0.017-0.047 mm (0.0007-0.0019 in)
Ring end gap
Top ............................................................................................................................................................................... 0.15-0.30 mm (0.006-0.012 in)
Intermediate ............................................................................................................................................................. 0.25-0.50 mm (0.0098-0.0197 in)
Oil control ................................................................................................................................................................ 0.15-0.65 mm (0.0059-0.0256 in)
Ring groove width
Top ........................................................................................................................................................................... 1.52-1.54 mm (0.0598-0.0606 in)
Intermediate ............................................................................................................................................................. 1.52-1.54 mm (0.0598-0.0606 in)
Oil control ............................................................................................................................................................ 3.030-3.056 mm (0.1193-0.1203 in)
Ring width
Top and intermediate ............................................................................................................................................... 1.50-1.48 mm (0.0590-0.0582 in)
Ring-to-groove clearance
Top ....................................................................................................................................................................... 0.020-0.060 mm (0.0008-0.0020 in)
Intermediate ......................................................................................................................................................... 0.020-0.060 mm (0.0008-0.0020 in)
Pin bore diameter ............................................................................................................................................... 22.0125-22.0175 mm (0.8666-0.8668 in)
Pin
Diameter ...................................................................................................................................................... 22.0010-22.0030 mm (0.8662-0.8663 in)
Length ............................................................................................................................................................................................. 61.8 mm (2.433 in)
Fit-to-piston ....................................................................................................................................................... 0.0095-0.023 mm (0.0004-0.0009 in)
