<VV> Oil Pressure

jvhroberts at aol.com jvhroberts at aol.com
Tue Aug 31 13:25:39 EDT 2010

 IMHO, higher oil pressure carries with it very few sins. The amount of HP it takes to drive the pump is really pretty small, so, no biggie there.

However, higher pressure does get you higher oil flow, and that's good for a lot of reasons. It allows the oil to carry away more heat, since the flow is greater. The higher flow that comes with higher pressure also makes oil coolers work better, although, you will see a rise in oil temperature simply because the higher oil flow also carries away more heat from the engine. 

Obviously, getting to the point where you're blowing gaskets, oil filters, stripping the drive gears, etc., is a bad thing, but that's probably well north of 100 PSI. 

I don't get the foaming thing, since most of that is caused by windage, etc. But that's just me!


John Roberts


-----Original Message-----
From: Rick Norris <ricknorris at suddenlink.net>
To: kenpepke at juno.com; virtualvairs at corvair.org
Sent: Tue, Aug 31, 2010 11:53 am
Subject: Re: <VV> Oil Pressure

Another reason I run the high volume pump is because there is a front 

mounted oil cooler and remote oil filter in the race car.

Rick Norris

#36 Sunoco Corvair



> Higher than necessary oil pressure increases parasitic drag and increases 

> oil temperature.  For racing application use 10 psi per thousand engine 

> RPM; 10 psi at idle and low speed, 20 psi at 2000 RPM, 30 psi at 3000 RPM 

> and so on.  More is not advantageous for street use.  Best to use high 

> volume oil pumps only on highly worn engines.

> Ken P


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