<VV> Re: heating the oil

[Roger Gault]

Seems likely that the cooling effect that Bob Coffin reported from using RTV
is mostly due to insulating the tubes from the 300 - 400 degree wind they
live in.  Makes me wonder what these guys would do for us.  Maybe they'd cut
down on both types of transfer.

http://store.summitracing.com/default.asp?target=esection.asp&N=120+4294923429+4294923290

Roger Gault

----- Original Message ----- 
From: <BobHelt@aol.com>
To: <dryenko@mindspring.com>
Cc: <virtualvairs@corvair.org>
Sent: Saturday, February 05, 2005 10:59 AM
Subject: <VV> Re: heating the oil


> In a message dated 2/5/05 7:00:20 AM US Mountain Standard Time,
> dryenko@mindspring.com writes:
>
> > keeping the  radiant and convective heat from the
> > exhaust pipe/ manifold away from the pushrod tubes, and the oil therein,
is
> > justified.
>
>
> Hi Bob,
> I couldn't agree with you more. Everything you said is "right on".
>
> But the question wasn't whether keeping the heat away fron the pushrod
tubes
> was good, or not. The question had to do with whether painting white paint
on
> the pushrod tubes was effective in lowering oil temperatures. That was
what I
> was questioning.
>
> Finally , on my race engines , I have seen a measurable oil temperature
> reduction by coating the outside of the pushrod tubes with red high
> temperature RTV silicone rubber on at least the outer 1/2 of the tubes, as
a
> insulating medium.
>
> OK, good, here is another data point. But here you used something
different.
> Why didn't you use white instead of red paint?  Would white have worked as
> well as red? It seems again, that we're not comparing apples and apples.
> Regards,
> Bob Helt
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