Hi there,
I feel that the problem is faulty piston rings, the back pressure is not exhaust but engine compression bypassing the rings and over pressurizing the sump and top end. You can do a wet comp test to prove this theory, add a small amount of engine oil to the cylinders and do a comp test, the oil will make a temp seal around the rings and if the comps rise the problem is in the rings. Start here.
Mark (mhpautos)
SPONSORED LINKS
Sunday, October 12th, 2008 AT 5:31 PM