HiTech Posted September 12, 2014 Report Share Posted September 12, 2014 get that problem figured out ... Quote Link to comment Share on other sites More sharing options...
JUMPSTER93 Posted September 13, 2014 Author Report Share Posted September 13, 2014 Not sure yet. One big thing I found was that I had 7 quarts in a 6 quart pan. So I am thinking windage was happening. So I put a new oil pump and pickup tube, even though the original looked to be fine. Eliminated the oil filter bypass and am using a wix filter now. We will see what happens. Quote Link to comment Share on other sites More sharing options...
Pacecar Posted September 15, 2014 Report Share Posted September 15, 2014 As mentioned earlier, a common problem is that the oil cannot drain back to the pan from the lifter valley area fast enough. Blowby is blowing up through the lifter valley drainback holes, at the same time that the oil is trying to drain downward through the same drainback holes. If the rules allow, grind the rear drainback hole significantly larger than stock. Some people install short stanchion pipes in the middle drainback holes so that most of the blowby flows upward through those holes, while the oil drains downward easily through the enlarged rear drainback hole (without fighting against blowby flow). Oil flow volume through the engine depends primarily on engine bearing clearances. Tighter/normal clearances allow a stock volume pump to work adequately. In many cases, a high volume pump will pump the excess flow through the oil pump relief valve (returning & splashing that oil directly to the pan).... mostly a waste of the extra power that it takes to drive the high-volume pump. Quote Link to comment Share on other sites More sharing options...
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