<VV> Low oil pressure

J. R. Read hmlinc at sbcglobal.net
Mon Aug 5 20:44:12 EDT 2013

I don't know about how loosely you use the word "fix", but you could set the idle up to say - 1,000 to 1,200 RPM and go back to the 15/50 Mobil1.  That should get the oil to wherever it needs to go, but keep in mind that this is a tired engine which will need a rebuid not too far down the road.

Later, JR

From: Bryan Blackwell <bryan at skiblack.com>
To: Virtual Vairs <virtualvairs at corvair.org> 
Sent: Monday, August 5, 2013 10:33 AM
Subject: <VV> Low oil pressure

Hi folks,

I figure I'll give Matt something to think about :-)

I have a 110 of unknown history in the '66 that I switched from 15x-50 to 10w-30.  When it's hot I now get an oil light at idle.  I thought about changing it back, but it seemed to make sense to actually check the pressure and see what it is.  So I made an adapter out of an old oil filter bolt and put a small mechanical press gauge on it.

At start up I have 25 psi at idle, but it only gets to 30 even at 3500 rpm.  When warm it's hovering around 8 - 10 at idle, but bringing the engine up to 3500 I only get about 20 psi.  I'm thinking the easy thing to try first is just swap out the pressure relief spring.  Any other quick fixes?  I'd prefer to run 10w-30, but if it comes to it I'll put the heavier oil in it, I'm not going to go deep into this engine any time soon and it runs really well otherwise.


Bryan Blackwell | Springfield, Va. | bryan at skiblack.com | http://autoxer.skiblack.com/  
  Corvairs: '62 700 Wagon, '64 Greenbrier, '65 Corsa, '66 Corsa
  '69 Road Runner, '99 Neon R/T, '00 Miata SE, '09 Ford F-150
"Why do something if you're not going to obsess about it?"

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