Date:         Mon, 12 Aug 2002 11:22:13 -0400
Reply-To:     Jay L Snyder <Jay.L.Snyder@USA.DUPONT.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jay L Snyder <Jay.L.Snyder@USA.DUPONT.COM>
Subject:      Re: oil pressure relief valve spec
Comments: To: "Stan Wilder <wilden1" <wilden1@juno.com>
Content-Type: text/plain; charset=us-ascii

I think we are talking wbx here.  I don't have an oil cooler, either ('85
1.9l).  I have seen this pressure (80 to 85 psi) on both my tired engine
and now with the new engine was installed.  My gauge is installed at the
stock sender location, down between cyls. 3 and 4.
                                                                  Jay




Stan Wilder <wilden1@juno.com> on 08/12/2002 11:10:29 AM

To:    Jay L Snyder/AE/DuPont@DuPont
cc:    vanagon@GERRY.VANAGON.COM
Subject:    Re: oil pressure relief valve spec


Jay:
I'd like to hear the reasoning behind this thought.
I say true; the gauge will be at 80+ and that is indeed the pressure at
the sender and very close to what the pump is putting out.
At 80 psi the oil filter and oil cooler is bypassed and oil is being sent
only to the bearings and back through the bypass valve to the sump. The
bypass should be fully open at 47 psi but the oil return gallery and
bearings still maintain high readings until the engine is fully warmed
because of their physical capacity in diameter.
That is one of the purposes of the pressure relief valve in a Type IV
engine, save the cooler and the oil filter from exploding.
If you have another engine, things might be just as you say.

Stan Wilder


On Mon, 12 Aug 2002 10:18:14 -0400 Jay L Snyder
<Jay.L.Snyder@USA.DUPONT.COM> writes:
> Goes at around 80 psig.  If you install a gauge you will see it go to
> 80
> psig or so and start to drop as the oil warms a bit.
>
>
> Jay
>
>
>
>
> TinkerMan <tinkerman007@YAHOO.COM>@gerry.vanagon.com> on 08/12/2002
> 10:11:14 AM
>
> Please respond to TinkerMan <tinkerman007@YAHOO.COM>
>
> Sent by:    Vanagon Mailing List <vanagon@gerry.vanagon.com>
>
>
> To:    vanagon@GERRY.VANAGON.COM
> cc:
> Subject:    oil pressure relief valve spec
>
>
> I wonder what's the oil pressure relief valve spec
> (i.e. what's the max allowable oil pressure).
> Can't find it in the Bentley or Haynes.
> Any knowledgeable dudes out there?
>
>
> =====
> Cheers, T-man.
>
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