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Munched exaust valves is a valve guide wear problem, heat could wear the
guides faster but its usually that the geometry is not properly set or that
they just plain wear out. 20PSI is Low... of course it depends on how old
your engine is but they see about 40 hot at the bearings at 3400 when new
and at 95K im still seeing 26 on the hotest days in my Square.
The Full flow in my notch has a definate effect on hot idle pressure,
and as the engine ages it will probably effect the pressure farther up in
RPM too. The hoses do have an effect, but it may be worth it for the
benefit of a filter or in your case, better cooling to #3. Ive pulled a
boat on a hot summer day on the highway and not overheated #3 though... so I
really wouldnt worry about it on a stock engine. But above that... yea.
> Whatever works for you.After my engine ate
> #3 exhaust valve.(wasn't pretty),I am hyper sensitive
> to heat issues.The only reason I eliminated the stock
> cooler was to remove the blockage to #3 cylinder.
> After all,it uses some of the cooling air that could be used
> in that corner of the engine.Cooling the oil became the job
> of an outboard fan and cooler.Thermostat on the inlet and
> returned in the stock location.(into adapter in stock location)
> After I tapped the block for the filter,I thought I might end up
> with lower oil pressure.Four runs of hose to filter and cooler
> and it still produces 22 psi fully warmed up and 20 psi after
> a good high speed run.No worries!
>
> David V.Nelson
> Darkside '69 VW Fasback(ZOOOOOOOOOOM)
> '86 GW
> '93 Firehawk
> '81 Escort (249,000 miles,now deceased)
> '90 Escort
> rmcevoy1@NOSPAMtwcny.rr.com
> davidvnelson@hotmail.com
>
>
> ----- Original Message -----
> From: <LinksAirForce1@aol.com>
> To: <type3-d@vwtype3.org>
> Sent: Friday, December 31, 2004 1:55 AM
> Subject: Re: type3-d Digest V2004 #784
>
>
> > David nelson
> >
> > I have the stock oil cooler intact... i had to do some cutting due to
> > the thicker flange on the high pressure oil pump and the thick Oil OUT
> > cover plate. like i said just had to do some cutting to the main fan
> > shroud (magnesium main fan shroud) and sealed it um via thin guage steel
> > and little high temp silicone and the car runs great.... i guess i might
> > have to post some pictures... works great ... but the way... Number
three
> > runs great!!! :)
> >
> > Trevor Cleveland
> >
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org
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> >
> >
>
>