Two Stk

[Rcmaster199 at aol.com]

The action of converting liquid fuel to a vapor in the venturi is a part of  
the refrigeration cycle. It requires energy to do it, which comes from several 
 sources. The most important source is the lower than ambient pressure as the 
 piston drives to compression, but ambient air and crankcase heat contribute  
also, once the engine has reached steady state. Insulating the carb body 
places  different demands on these sources of vaporising energy. 
 
Potentially, it may reduce air temp further which may have a supecharging  
effect. I think you are after improved sealing between the carb body and the  
throttle barrel, but this could be an added benefit.
 
Interesting idea Nat
 
Matt
In a message dated 2/28/2005 9:02:14 PM Eastern Standard Time,  
natpenton at centurytel.net writes:

The carb is a potent refrigerator. Most carb case  heating comes from ambient 
air, not from engine case conductance. The engine  crankcase though, should 
be well ventilated. The  situation may be better with a plastic bushing for 
mounting the carb to  engine case, although I have not done so.  Nat

----- Original Message ----- 
From:  _Dean  Pappas_ (mailto:d.pappas at kodeos.com)  
To: _discussion at nsrca.org_ (mailto:discussion at nsrca.org)  
Sent: Monday, February 28, 2005 1:49  PM
Subject: RE: Two Stk


Did you turn down the carburettor boss to make a gap that's filled  with 
vinyl?
If  not, then it's an awfully thin bit of insulation that provided the 
desired  effect.
later,
    Dean
 
Dean Pappas 



 
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