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Old 07-05-2020, 09:38 AM   #62
40 Deluxe
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Join Date: May 2010
Location: now Kuna, Idaho
Posts: 3,781
Default Re: lowest oil pressure for engine to survive

Quote:
Originally Posted by alanwoodieman View Post
40 deluxe, what we are think about is the high volume pump which happens to be the 80# variety, actually what we are looking for is more oil flow not necessarily a lot more pressure

Well, the extra flow from a high volume pump has to have somewhere to go (through loose, worn bearings) or else it just gets churned through the bypass (relief valve) wasting power and heating the oil. Since there is no need for 80# of oil pressure, just replace the relief valve spring with one that opens at a lower pressure.
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