<VV> Balancing engine and higher shift point for PG

[Bob Gilbert]

Howdy Guys,
The pistons should be balanced as a set, so should the rods. By design { 
opposed } the Corvair engine doesn't need to have the reciprocating 
parts { pistons & rods } weighted and used in balancing the rotating  
parts. When I used to work in a shop that had a balancer we did parts 
for my engine that way. That was how the Stewart-Warner book said to do 
it. I have sense had another Corvair engine balanced the same way. Both 
worked the way they were supposed to, fine.
Bob

Edelstein and Payne wrote:

>Folks,
>
>       I have 2 queries:
>
>       1.  Finally getting ready to put the motor together.  We ordered barrels , pistons and rods from Clarks, and I had Clarks install the rods on the pistons.  Talked to my favorite machine shop about having them balance the crank, rods, pistons, etc.  They said that Clarks should have sent a balance card with the pistons and rods, showing reciprocating and rotating weights.  Otherwise, they would have to press off at least one rod and were concerned about distorting the piston.  I e-mailed Clarks and they said they didn't have the weight information and that anyway it wasn't necessary to have the reciprocating assembly balanced becuse of the short stroke of these motors.  What do others think?  I've always balanced motors from other vehicles that I've rebuilt.  Is it really unnecessary with Corvairs?
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