Oil Pressure Woes...Normalish, now low?
07-28-2011 | 06:52 AM
#22
I'm not gonna point fingers but that looks like bearing damage from not properly cleaning the block and crank during a rebuild. THERE is noway dirt from the oil pan can get past the oil filter SO after a rebuild you pull a few bearing and you see something like this its a safe bet the block and crank were not cleaned well enough. How bad does the crank look? I personally wooooood pull everything down and and clean everything with a pressure washer then start checking clearances and find a someone who knows how to set the crank bearing clearances properly. Good luck finding someone thats not a bser!
The main reason I say that I think it was the machinist that caused the problem was because he had the damn thing for 3 weeks before getting it ground, two of those it was the only thing holding me up from building the motor. I called him every day of the final week before he got it done. So he probably rushed it and got a journal slightly wrong and caused this problem. He is the only one in a 20 mile radius of here that could turn cranks, but now I'm either going to go back with a factory crank or have it reground at a more reputable company.
Motor hasn't still been removed completely, so once that is done it's possible that I'll find a cam bearing that moved slightly. It just doesn't make sense that dirt caused this because the engine from the first crank never had the pressure that a Melling high pressure pump makes. Another thing that doesn't hold up to the dirt theory is that one would think the #1 main and the #6 and #8 rod caps I pulled would have entailed the same damage as this one had it been something that was floating around the oil galleys...
