Town Car V8-4.6L VIN W (1997)
Piston Ring: Specifications
End Gap
Nominal [1]
Top Ring ..................................................................................................................................................... 0.13-0.26 mm (0.005118-0.010236 inch)
Second Ring ................................................................................................................................................ 0.30-0.55 mm (0.011811-0.021654 inch)
Oil Ring Rail ............................................................................................................................................... 0.15-0.66 mm (0.005910-0.025984 inch)
Maximum
Top Ring .............................................................................................................................................................................. 0.75 mm (0.029528 inch)
Second Ring ......................................................................................................................................................................... 0.75 mm (0.029528 inch)
Oil Ring Rail ........................................................................................................................................................................ 1.25 mm (0.049213 inch)
Side Clearance, Minimum-Maximum
Top Ring ....................................................................................................................................................... 0.040-0.090 mm (0.001575-0.001610 inch)
Second Ring .................................................................................................................................................. 0.030-0.080 mm (0.001181-0.003150 inch)
Service Limit ........................................................................................................................................................................... 0.015 mm (0.000591 inch)
Oil Ring ................................................................................................................................................................................................................ Snug Fit
[1]
Specification in gauge.
