gary69
NAXJA Forum User
- Location
- pittsburgh, PA
Hey all, just getting into a 96 XJ that had low compression on cyl 3. Got it all tore down and the piston out. Honed the bore and got a bearing set and a piston ring set from advance auto parts. Sealed power was the brand. The piston rings fit into the bore and have good end gap clearance. But the rings themselves are too thick to fit into the grooves of the piston itself. I returned them and they said that one part number claims it covers all 4.0's from 84-01 and that they cannot help me. I tried rings from Napa and had the same issue, also sealed power. I cracked open another 4.0 from a 93 YJ to compare rings and they are the same as what came out of the XJ. So I know that it's not just something crazy goin on with this particular engine. Has anyone else had this issue before?