Quote:
Originally Posted by cw
thanks you guys are awesome.
We have replaced the block (twice), all 4 pistons/rods/rings (3 times) and oil pump. The only things in common across all occurances are the head, intake, distributor, pan, tray, crank and cam.
If it were detonation, would we see evidence on the piston head?
Since it is always #4 could it be the crank/journal on #4?
Could it always be #4 because oil starvation on the last cylinder?
I appreciate guidance on a course of action (short of having my head examined - again ;-)... Chris
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You need to have the crank checked on the #4 journal. Sounds like it is ground wrong or the crank is bent at that journal. The only other suggestion I would have is to check the distributor and the point cam for any problems. Your problem is not in the block, pistons or, rods since you have changed these so many times. If the problem is not the crank, my next suspect would be driver/operator error of some type.
Just an opinion.