<VV> Cylinder Head Temperature...

[Secular]

  Hi Norm:

  I'm grateful for your response. The heads have been painstakingly deflashed. All carbs are rebuilt and yes it does have a spyder dash with an AC thermistor attached. Timing is set at 18 degrees. 

  The temperature I was experiencing was near 400 in heavy stop & go traffic (90 degrees outside). Having read what you and JR pointed out, seems like my concerns (at least for now) were unfounded.

  Regards,


  Tony



----- Original Message ----- 
From: "Norman C. Witte" <ncwitte at wittelaw.com>
To: "'Secular'" <rusecular at yahoo.com>; <virtualvairs at corvair.org>
Sent: Tuesday, September 05, 2006 5:04 PM
Subject: RE: <VV> Cylinder Head Temperature...


> 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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> 
>