<VV> Cylinder head temp.

[Bill Elliott]

The coils are not on/off... the chokes slowly open as the engine warms 
up. (Only the throttle pressure holds them in place... that's why they 
may seem to be on/off because by the time you hit the throttle they are 
already open, but being held closed). I've never seen any data, but can 
give you my observations.

I am fighting with the charging system on my wife's fully instrumented 
Corvair-powered Westy, so I've been doing a lot of cold starts. I've 
noted that the coils are fully open just before the heads hit 200 
degrees (measured at the spark plug)...  If you manually open the chokes 
below 150 degrees head temp, the engine stumbles somewhat. The engine 
only gets to about 225 in extended idle.... so I'd consider 200 (or just 
slightly below) to be minimum full "operating  temperature".

Hope this helps!

Bill

ScottyGrover at aol.com wrote:

>Gentlemen,
>I have read "The Classic Corvair", Clark's and Lon's catalogs and also  the 
>SAE Papers on the Corvair--and I have a question--what is the approximate  
>cylinder head temperature at the point where the choke coil opens to indicate  
>that the engine is warmed up?  The stock system didn't need this but a fuel  
>system that doesn't use carburetors would definitely need a signal that the  
>engine had reached operating temperature.  Where should I look for  this 
>information:?
>Thanks in advance,
>Scotty 
> _______________________________________________
>
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