<VV> Oil Pressure

[Rick Norris]

Another race car reason to use a mechanical gage is they are usually full 
sweep or close. Most electrics are not.
Better accuracy plus you need to be able to read them quickly. Thats why we 
use big bright lights in the face to warn of a fan belt off or loss of oil 
pressure.

Rick Norris
#36 Sunoco Corvair
www.corvairalley.com
>
> A couple of things here:
> 1. Do you believe the gauge? I'd screw in a mechanical gauge into the hole 
> and read it in the engine compartment. Or, connect the sender (with a good 
> ground) to a compressed air source with a regulator, and see if the gauge 
> on the regulator compares with the dash gauge. If they agree, both are 
> most likely fine. If they don't, you'll need to determine which on is 
> amiss!
> 2. If it is that low, more pressure can't be bad. Getting 20 PSI at idle 
> sounds pretty good. You should see more at higher engine speeds. This 
> usually means the oil pressure regulator spring is weak. I've run as high 
> as 100 PSI and never had a leak. But then again, when I built my engines, 
> I made sure the gasket surfaces were true, flat, and free of damage.
>
>
>
> John Roberts
>
>
>
>
> -----Original Message-----
> From: dpross1342 at aol.com
> To: kovacssm at sbcglobal.net
> Cc: virtualvairs at corvair.org
> Sent: Mon, Aug 30, 2010 9:33 am
> Subject: <VV> Oil Pressure
>
>
> I run a VDO electric oil pressure gauge on my '67 110 HP, as well as an
>
> oil temp gauge. Oil pressure registers a constant 30 PSI at road speed,
>
> regardless of the oil temperature, which usually runs 200 plus degrees.
>
> (It is sensitive to outside air temps.) .At idle, it will drop to 20
>
> PSI.  I have thought about adding the higher oil pressure relief spring
>
> from Clarks, but have been wary about oil leaks, especially around the
>
> oil filter casting...the width of the gaskets are pretty narrow in
>
> places.  But the apparent lower than spec pressure hasn't seemed to
>
> harm the engine (drove 1700 miles to & from the Iowa convention) and
>
> have put about 15,000 on the car since I purchased it 7 years ago. Any
>
> thoughts on the increased pressure, good or bad?
>
> Thanks, Don Rossbach
>
>
>
>
>
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