<VV> Rotation direction

JVHRoberts at aol.com JVHRoberts at aol.com
Thu Oct 20 19:06:04 EDT 2005

However, I think the Corvair crank rotation was chosen for a VERY different  
reason. This allowed GM to use existing transmission designs, rotating them in 
 their original design direction. Hence the similarity to Corvair 
transmissions  and their front engined counterparts. It's no coincidence that the Sag 
trannies,  and the early 3 speeds are essentially lifted right from their front 
engined  cousins. And the PG became the aluminum PG used slightly later in 
front engined  applications. 
The final drive, being TOTALLY unique to the Corvair, could be designed to  
run any direction they wanted to.
In a message dated 10/20/2005 7:01:23 P.M. Eastern Standard Time,  
Sethracer at aol.com writes:

J   Roberts said that the vair engine turns the opposite way of all   other
engines. Well, when I open the hood of any other GM car I have  ever  seen,
with longitudinal engine, such as my El Camino 350,   and look at  the front
of the engine , it looks like it turns the same  way as my vair  engine, when
I look at it (vair engine) from the front  ( the differential  end) of the
engine. Am I mising something after  all these years  ??

And According to Bob  benzinger, the reason for the choice of the rotation  
the Vair  motor was the equipment GM had for cutting the hypoid Ring &  
gears. The gears are cut - relative to the teeth - the same as any  other  GM 
car of the era. Of course, the power input rotation into  the pinion gear was 
changed by the use of a hollow main trans shaft  - Also of Note, Honda  
4-cylinder car engines - prior to the S2000  model - rotate the same way - 
viewed  at 
the flywheel/output end - as  the Corvair. -  Seth 


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