<VV> Cylinder Head Temperature...

[Norman C. Witte]

Tony, I asked this question of Ken Hand recently and his response was that
as long as you're not topping 500 deg. on the factory gauge, you should be
ok, but I would not want to run at those temps on an extended or regular
basis.  It can't be good.

Unlike JR, at cruising speeds, I usually see a touch over 400 on my Corsa
coupe.  My turbo is running considerably hotter, but I don't think that's a
good condition.

Typically, I see lower tems in city traffic where the RPMs aren't as
high--maybe in the 350-375 range.  The turbo seems to nudge up toward 400 in
that setting.  

All of this is as observed on the original '65 gauge with the AC thermister.
I am assuming that this car has a Spyder dash which would be hooked to the
same sending unit.  If not, I don't know that my experience is informative.

I think JR's "redline" of 450 deg. is a good one to observe.  What are you
seeing?  Have the heads been deflashed and is the timing set properly?

Norm Witte 


> -----Original Message-----
> From: Secular [mailto:rusecular at yahoo.com]
> Sent: Tuesday, September 05, 2006 1:06 PM
> To: virtualvairs at corvair.org
> Subject: <VV> Cylinder Head Temperature...
> 
> 
>   Hi:
> 
>   What would be  "normal" for a cylinder head temperature (CHT)?
> 
>   I realize many factors play in the response, nonetheless, I'm curious to
> know that for example, in hot summer days (90 Degrees outside) - city
> traffic - what should the gauge show?
> 
>   The car is a 1960 Monza with a transplanted 140HP (4 Carb) engine +
> headers (the lower shrouds are cut perfectly to fit these headers). I also
> know that many Corvair owners remove the shrouds in summer for added
> cooling.
> 
>   Regards,
> 
> 
>   Tony
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