<VV> New Cast Aluminum Corvair Cylinder Heads

[Sethracer at aol.com]

In a message dated 5/17/2011 9:29:01 P.M. Pacific Daylight Time,  
corvairduval at cox.net writes:

Are you  going to mention the little thing about the threads are 
different from the  snap switch sending unit and the thermistor sending 
unit used with a gage?  All right heads on all engines (OK, 61 to 69) and 
all engines except 140s  and turbos have the same threads in the left 
head (because they are the  SAME head with balance tube plumbing pressed 
in differently). Turbos and  140s have different threads in the left 
head. And turbo heads are  different left to right due to the oil return 
pipe hole in the right  head.


In my experience, all 140, 150 and 180 heads are drilled for  3/8-24  
thread. The snap switch for the right side head on the 140-150-180 heads is a  
3/8-24 thread. All other Corvairs 61-on are drilled for the 3/8-16 threads of  
the standard snap switch. It is functionally identical to the 140-150-180  
switch, except for the threads. All thermisters have a 3/8-24 thread. - The  
thread adapter is needed when adapting the thermister to a  non-140-150-180 
head. 
 
Seth Emerson