Aerostar 2WD V6-245 4.0L (1990)
Piston Ring: Specifications
Compression Piston Ring Width (Top) .......................................................................................................................................................... 0.0778-0.0783
Compression Piston Ring Width (Bottom) .................................................................................................................................................... 0.1172-0.1177
Compression Piston Ring Side Clearance (Top) ............................................................................................................................................ 0.0020-0.0033
Compression Piston Ring Side Clearance (Bottom) ...................................................................................................................................... 0.0020-0.0033
Piston Oil Ring Side Clearance ................................................................................................................................................................................ Snug Fit
Side Clearance Service Limit ....................................................................................................................................................................................... 0.006
Compression Piston Ring Gap (Top) ................................................................................................................................................................. 0.015-0.023
Compression Piston Ring Gap (Bottom) ............................................................................................................................................................ 0.015-0.023
Piston Oil Ring Gap (Steel Rail) ........................................................................................................................................................................ 0.015-0.055