Town Car V8-4.6L VIN V Flex Fuel (2006)
Piston: Specifications
Piston
Diameter
Grade 1.................................................................................................................................................... 90.191-90.206 mm (3.5508-3.5514 inch)
Grade 2.................................................................................................................................................... 90.203-90.220 mm (3.5513-3.5519 inch)
Grade 3.................................................................................................................................................... 90.217-90.232 mm (3.5518-3.5524 inch)
Piston-to-cylinder bore clearance @ 43 mm from top...................................................................... -0.005 to + 0.025 mm (-0.0002 to + 0.0010 inch)
Piston ring end gap
Top.................................................................................................................................................................. 0.15-0.30 mm (0.0059-0.0118 inch)
Intermediate.................................................................................................................................................... 0.15-0.30 mm (0.0059-0.0118 inch)
Oil control....................................................................................................................................................... 0.15-0.30 mm (0.0059-0.0118 inch)
Ring groove width
Top.............................................................................................................................................................. 1.520-1.540 mm (0.0598-0.0606 inch)
Intermediate................................................................................................................................................ 1.520-1.540 mm (0.0598-0.0606 inch)
Oil control..................................................................................................................................................... 3.03-3.055 mm (0.1193-0.1203 inch)
Ring width
Top............................................................................................................................................................................................ 1.5 mm (0.05 inch)
Intermediate............................................................................................................................................................................... 1.5 mm (0.05 inch)
Ring-to-groove clearance
Top.............................................................................................................................................................. 0.020-0.060 mm (0.0008-0.0024 inch)
Intermediate................................................................................................................................................ 0.020-0.060 mm (0.0008-0.0023 inch)
Oil control................................................................................................................................................... 0.030-0.070 mm (0.0012-0.0028 inch)
Pin
Bore diameter...................................................................................................................................... 22.0065-22.0110 mm (0.8664-0.8666 inch)
Pin diameter............................................................................................................................................ 21.995-21.997 mm (0.8659-0.8660 inch)
Length..................................................................................................................................................... 61.870-62.120 mm (2.4358-2.4456 inch)
Pin-to-piston fit......................................................................................................................................... 0.0095-0.016 mm (0.0004-0.0006 inch)
Piston-to-connecting rod clearance........................................................................................................................... 6.58-7.58 mm (0.259-0.298 inch)
Rod-to-pin clearance......................................................................................................................................... 0.016-0.038 mm (0.0006-0.0015 inch)
