Grand Cherokee 4WD V6-3.7L (2009)
Piston Ring: Specifications
Piston Ring Gap And Groove Clearance
Ring Gap:
Top Compression Ring....................................................................................................................................................0.20 - 0.36 mm (0.079 - 0.0142 in.).
Second Compression Ring.............................................................................................................................................0.37 - 0.63 mm (0.0146 - 0.0249 in.).
Oil Control (Steel Rails)....................................................................................................................................................0.25 - 0.76 mm (0.0099 - 0.30 in.).
Side Clearance:
Top Compression Ring..............................................................................................................................................0.051 - 0.094 mm (0.0020 - 0.0037 in.).
Second Compression Ring.........................................................................................................................................0.040 - 0.080 mm (0.0016 - 0.0031 in.).
Oil Ring (Steel Ring).................................................................................................................................................0.019 - 0.229 mm (0.0007 - 0.0091 in.).