<VV> Balancing engine and higher shift point for PG

[Spencer Shepard]

I once took 4 crankshafts to a shop that did NASCAR engines for balancing. 
They were all within "racing" specs without touching them.

Spence Shepard
----- Original Message ----- 
From: "Bob Gilbert" <traceya at montrose.net>
To: "Edelstein and Payne" <eandp at mindspring.com>
Cc: <virtualvairs at corvair.org>
Sent: Tuesday, September 19, 2006 1:59 AM
Subject: Re: <VV> Balancing engine and higher shift point for PG


> 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?
>>
>>
>>
> _______________________________________________
> This message was sent by the VirtualVairs mailing list, all copyrights are 
> the property
> of the writer, please attribute properly. For help, 
> mailto:vv-help at corvair.org
> This list sponsored by the Corvair Society of America, 
> http://www.corvair.org/
> Post messages to: VirtualVairs at corvair.org
> Change your options: 
> http://www.vv.corvair.org/mailman/options/virtualvairs 
> _______________________________________________