<VV> valve seats - Head Temps

[corvairduval at cox.net]

I considered 550 on my 64 Spyder gauge too high. 600+ was seen early in my
ownership. 500 on a normal summer day interstate speed was a typical
reading.

Of course the heads were dropping vavle seats regularly. And why it is off
the road currently. It is a 145 cu in YR engine.

Most miles were before the vast knowledge of head deflashing, etc. we have
now on the internet discussion boards and forums. There is no RED zone on
the factory gauge, so what is too hot? I know many Spyder owners who
experienced similar readings. Corsa owners however, always had lower
readings. Maybe due to most being normally asperated 140s instead of all
turbos like Spyders?

And, how accurate was my gauge?

Frank DuVal


Original Message:
-----------------
From: Dave Keillor dkeillor at tconcepts.com
Date: Thu, 10 May 2012 08:30:41 -0500
To: jvhroberts at aol.com, virtualvairs at corvair.org
Subject: Re: <VV> valve seats revisited (Engine Braking)


At what CHT would you consider the temperature to have entered the "too
high" zone?

Dave Keillor

On Wed, May 9, 2012 at 1:46 PM, <jvhroberts at aol.com> wrote:

>
>  Again, a sample of 1 isn't meaningful. IMHO, the CHT on all Corvair
> engines is too high. Run one hard, and it's ALWAYS too high.
>
>
>
> John Roberts
>

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