Which pressure in high volume oil pump?

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Sep 20, 2010 | 01:48 PM

357i

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From: Richmond, VA

Which pressure in high volume oil pump?

I've got the GM high volume oil pump from lingenfelter:
http://www.lingenfelter.com/mm5/merc...egory_Code=C54

Are there any disadvantages to leaving the higer pressure spring in it?

Sep 20, 2010 | 01:54 PM

Lt1Porsche

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From: Midlothian, Virginia

None that I have ever noticed. Not for a street vehicle.

Sep 20, 2010 | 01:57 PM

1SLwLS1

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Well, higher pressure typically means more internal frictional losses. How much? Minimal I would assume. I would use the high pressure spring to see higher pressure with larger clearances, such as a rebuilt SB or a block with ~0.002-0.003" clearances. Those engines will typically show much lower pressure, and as long as you're around 50-55# @ red line during WOT, you should be good. Any more than that is just excessive.

Sep 20, 2010 | 03:09 PM

Racinjason424

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From: HOLT, MI

I'm running their high-volume ported oil pump... I was at 50-60psi hot idle and it would almost peg the needle at 100psi at WOT. I pulled it back apart and put the standard spring in it.. Now I'm at 50-55psi hot idle and 65-75psi max at WOT.. Not sure if it would have ever been a problem, but it made me uneasy and I was in there for another reason, so I swapped it out..

Sep 20, 2010 | 08:36 PM

Arc00TA

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From: The 'Nard

I have a question along the same lines, I am building a front mount turbo setup, is it worth raising the oil pressure since I would have to feed the turbo also?