<VV> Oil Pressure

[jvhroberts at aol.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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