<VV> Warped Carbs?

[JVHRoberts at aol.com]

After all these years, I am guessing it's previous  
mechanics/owners/hobbyists/etc. who overtorqued the mounting nuts. I've seen the  same thing, but I 
have also seen MANY HVs with perfect throttle bores. Note, I  am not talking 
about the shaft bores.... 
 
In a message dated 6/15/2006 1:17:57 PM Eastern Standard Time,  
gyoungwolf at earthlink.net writes:

Looking  for educated opinions on what makes the Corvair carburetors warp 
in the  throttle body area? I just tossed out several secondary carb bowls
in which  
I could not get a good throttle plate seal because the sealing area was  so
far 
out of round. I find them from perfect to about .020" or so out  of round. 
It seems like their mounting design and the throttle plate would  prevent
this. 
While the warp is usually not enough to make much  difference in a primary
carb, 
it can be death to a secondary. I know  that aluminum gets happy around 350
degrees, 
so I suspect it is a  design oversight?
Thanks.
Grant