<VV> Rochester 2CGs on a Corvair Engine?

FrankCB at aol.com FrankCB at aol.com
Mon Mar 18 21:47:24 EDT 2013


Joe,
    What you describe seems like taking  a 4  barrel carb which has been 
split into 2 halves and putting each half on one side  of the 140.  However, 
you might want to consider converting each 2GC to  a PROGRESSIVE operation 
like Ray Sedman is offering on the sidedraft Weber  carbs for a turbo Corvair. 
 :
 
    _http://www.american-pi.com/corvair/html/DCOE_detail.html_ 
(http://www.american-pi.com/corvair/html/DCOE_detail.html) 
 
Frank Burkhard
Boonton, NJ
 
 
In a message dated 3/18/2013 9:23:52 P.M. Eastern Daylight Time,  
jwcorvair at aol.com writes:

I was  wondering if anyone has tried to use a pair of Rochester 2CGs on a 
Corvair  engine. These are a relatively simple twin throat carb that are 
frequently  used on some class specific race cars - think circle track racing. 
One of our  vendors offers an adapter to mate a twin throat Weber IDA to a 
140 hp head.  Both the IDA and the 2CG are non progressive carbs and will flow 
the through  both throats into the cast manifold on a Corvair head, 
possibly over  carbureting the capability of a cylinder to burn the fuel. In some 
ways this  seems to be a waste to me, but might have some performance 
application. Using  either the 2CG or IDA would require careful matching of jets 
(much easier to  do with the Weber IDA) to get best performance. What prompted 
this question  was that I read an article about performance tuning the 2CG 
in the online  version of Circle Track magazine.

The 2CG might also have some  application on a turbo engine, similar to the 
old Stomberg modification for EM  turbos.

Any thoughts?

Joe White (62 four door, 66 Porvair, 64  Spyder)



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