Just took car back to rebuilder for 500 mile checkup after complete rebuild.
The PO had changed to 2.2 PC's, the heads were redone and the cly's sent to machine shop. Mechanic and Machine shop said all look good and put on new rings. Yesterday after compression check , cylinders 1,2,5 had 130, #6 120 and 3 & 4 had 110. He did a Leakdown and found # 4 had 30%. He say's it is the rings. He wants to pull out and redo.
He is suggesting a different PC set?
The motor was initally rebuilt because of high leakdown.
Any ideas what should be done so that this does not happen again? Anything that should be done while open?
I am not a motor rebuilder so relying on his expertise. Would appreciate ideas from the guru's.
Thanks
Bob M