<VV> Replacing Oil Pressure Regulator Spring

[Joel McGregor]

This is all assuming a properly functioning oil pressure regulator.  If it's leaking at idle then it  will lower the pressure.  It could leak from a bad plunger/bore or a too short spring.

-----Original Message-----
From: virtualvairs-bounces at corvair.org [mailto:virtualvairs-bounces at corvair.org] On Behalf Of Mark Durham
Sent: Friday, March 23, 2012 10:22 PM
To: Frank DuVal; virtualvairs at corvair.org
Subject: Re: <VV> Replacing Oil Pressure Regulator Spring

Frank and all. The spring and plunger should not be regulating anything at idle. It is a pressure regulater, but at the other end, the top end.
So, if you are getting 45 psi at higher rpm's, the spring stays closed to that pressure, then opens enough to return excess pressure. Pressure at lower rpm's is the pressure developed by the pump versus all the places oil flows through. If the pumps flow matches flow, there is no pressure. If flow capability is greater than the places oil needs to flow, you get pressure, up to the relief spring setting. that why at idle, pressure is normally lower.