<VV> RE: Lower shrouds

[Pitts10ch at aol.com]

I live in CT and it is hilly around here of course.  I see 300 degrees  most 
of the time when I am zipping around the curvy hills at power.  I do  see it 
drop when on the back side of a hill about 50 degrees over a minute or  two.  
With the shrouds on, I see 400 - 410 on the highway.  That seems  hot to me but 
I come from aircraft engines and 400 + is pretty warm on that  front.  I can 
see that I could be shock cooling on the backside of a hill  which causes 
cracking in aircraft engines between the spark plug hole and the  exhaust valve.  
Anyway, I think IL is probably a really safe bet on  the shroudless and I am 
probably on the ragged edge when going down a long  hill.  Has anybody ever 
heard of cracking jugs on these beasts?  If  that is not the concern what other 
negative effects could over cooling  have?  
 
Fingers worn out,
 
Chris H.
'66 140/4 



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