Dragon Slayer
Well-Known Member
That would be a drastic leak and I doubt he could get 40psi. Did you pull valve covers and prime and look at rocker arm plugs see if they are leaking? You do have very low-pressure cold in my opinion, and inability to get high pressure or hold it. Looking at heads, with covers off, and priming manually, drop pan and inspect especially pickup. Was this block windowed before or in good shape. I had a hemi block with a crack in the lifter galley to cylinder wall. Ran pretty well at first on run stand, than crack developed and oil leaked into water. After more running it would leak water into oil also. Primmed fine, ran high pressure cold 80psi, but did start to loose pressure after run time and fluctuate toward 20psi. Hemi does move a lot of oil to the heads and drainage is slow so you can also see effects with low oil level.
Oil pressure issue are hard problems to track down.
Oil pressure issue are hard problems to track down.