<VV> Oil Pressure Question

[Bob Gilbert]

That's a good idea and by coincidence I happen to have one.
Regards,
Bob
PS that also eliminates the potential of the impact, if any, on the signal
with 25 feet of wire from the sensor to the gauge in my UltraVan

-----Original Message-----
From: Bob Gilbert [mailto:corvairbob at bresnan.net] 
Sent: May-07-12 1:03 PM
To: Bob Gilbert; Virtual Vairs
Subject: Re: <VV> Oil Pressure Question

Hi Bob,

I always check with a mechanial gauge teed into the same port as your
electrical gauge. I have been told I am a "bit" cautious.   (-;

Bob


----- Original Message ----- 
From: "Bob Gilbert" <bgilbert at gilberts-bc.ca>
To: <BobHelt at aol.com>; <virtualvairs at corvair.org>
Sent: Monday, May 07, 2012 10:55 AM
Subject: Re: <VV> Oil Pressure Question


> Hi Bob,
>
>
>
> Good advice - thanks.
>
>
>
> My next step is to check the end plate clearance, if only to reassure
> myself
> that I did it properly. Right now, assuming the gauge is accurate, hot
> idle
> is just under 15 PSI so I'm not too concerned about any serious internal
> engine problems. Later I'll check the hot pressure at 4,000 RPM.
>
>
>
> Regards,
>
> Bob
>
>
>
>
>
> From: BobHelt at aol.com [mailto:BobHelt at aol.com]
> Sent: May-07-12 9:20 AM
> To: bgilbert at gilberts-bc.ca; virtualvairs at corvair.org
> Subject: Re: <VV> Oil Pressure Question
>
>
>
> Hello Bob,
>
> May I suggest that you are delving into the black unknown here with your
> inquiry?
>
> There are no specs for pressures made via end plate clearances, and highly
> unlikely that there is any VALID experimental data either. Set it to the
> specs and forget it.
>
>
>
> In addition there is no pressure spec for 2500 rpm.  So I suggest you
> stick
> with the known specs and data, The important data point is what pressure
> do
> you get at a normal idle speed with a HOT engine and spec'd oil grade?
> More
> too...If I remember correctly, the original spec was for a minimum of 4
> PSI.
> but the oil light is controlled by the snap switch and there are several
> types in use with different pressure activation points. So the best thing
> is
> to install an accurate pressure gauge and measure the pressure at a hot
> idle. That is your basic criterion. it should be about 10-15 PSI min.
>
>
>
> Then if you are interested, measure the hot pressure at 4000 rpm and see
> what you get. The spec varies slightly from engine to engine (em vs late
> basically). But 40 PSI is about max. If the idle pressure is around 10-15
> psi, then you can stretch the pressure relief spring slightly to increase
> the max pressure. The max pressure is NOT critical though as long as it is
> in the 40 PSI ballpark.
>
>
>
> IF and I say IF, your pressures are low, look first to the camshaft
> bearing
> clearances. Then to the endplate clearance.
>
>
>
> Good luck,
>
> Regards,
>
> Bob Helt
>
>
>




-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.1913 / Virus Database: 2425/4983 - Release Date: 05/07/12