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Originally Posted by oil pan 4
Want to reduce oil pumping losses? Here is how I would do it.
1 like mechanic said, reduce the relief pressure on the pump.
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If the pump pressure release valve is accessible this can work, but for those that are not it could turn out to be a lot of work
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2 intentionally put an undersized oil pump on the engine and an additional electric oil pump. The electric would run when the engine is cold and below a certain RPM so you don't get near 0 oil pressure at and near idle.
I almost did this with my suburban when I rebuilt the engine, put the undersized factory non-turbo oil pump back on the motor and back it up with and electric but I couldn't find an electric oil pump and filter I liked.
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Personally, I don't trust electric pumps enough to do this, and would probably find myself watching the oil pressure gauge constantly.
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How about just put the biggest oil filter that will fit on the oil filter head?
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This should help with better filtering, but don't forget that most oil filters have a bypass valve built in, so I'm not sure what net effect this would have on overall system pressure.
Here is a link to an engineering forum, where required engine oil pressure is discussed, the last post is interesting-
Eng-Tips: Engine & fuel engineering - Determining necessary oil flow volume for main and rod bearings