<VV> New Cast Aluminum Corvair Cylinder Heads

[Western Canada CORSA]

I believe it's not only the threads that are different, the depth of the
boss is different as well....

-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of Frank DuVal
Sent: Tuesday, May 17, 2011 10:29 PM
To: virtualvairs at corvair.org
Subject: Re: <VV> New Cast Aluminum Corvair Cylinder Heads

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.

So, if a 140 was originally in a Monza, does it still have the "other" 
thread in the left head? Monzas do not have a gage.

Frank DuVal

On 5/17/2011 9:15 PM, Ramon Rodriguez III wrote:
> Clarification on the temp sender question:
>
> Make sure there is a provision in every head for a temp sender (just like
stock).  A large number of the cars these heads might find their way into
are Corsa's and Spyder's, both these models have one sender in EACH head.
Other models use only one side.
>
> The reason the Corsa's and Spyder's use both is that they use one for an
idiot light (same as other models) and use the other for an actual temp
gauge.
>
>
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