flywheel match balancing

[EnemyAce]

Hello forum,
I am experiencing a rather unique engineering quandary. I need to have an externally balanced (Detroit style) flywheel match balanced (or rather out of balance) to an existing external balanced flex plate. The flex plate and flywheel orient to the cranshaft output flange in a singular fashion. Could I mount the flex plate and the flywheel back to front of each other on a dynamic balance machine and remove/add material to the flywheel until the two zero balanced? Is there a simpler method?
Thanks,
Armand

 

[evelrod]

In switching from a mechanical gearbox to an auto I have run into the same, errr, opposite, of your problem. In your case, you will probably be able to access OEM specs for the flywheel but, if not (rare the engine that has NO mech option), I would only consider balancing the flywheel/crankshaft/front damper as a unit. Anything else, IMO, is Mickey Mouse Engineering . In combination with the OEM specs, your ideas may work to a fine---I am just not comfortable with it for anything but a grocery getter .

Rod

 

[EnemyAce]

Thanks Evelrod, I suppose I would have to agree that it may end up being somewhat of a mouseketeer engineered solution. The engine is in very good condition, not in need of a tear-down, or even extraction from the engine bay. I was hoping to not have to tear the engine apart to balance the flywheel to it. I did some more searching and found a suggestion to simply rotate the flywheel and the flexplate 180 degreees out of phase with each other and then zero balance the assembly. The vehicle is pretty much a cruiser.
Thanks for your input.

 

[sbi]

normally the out of balance is on the torque converter for a automatic, athough some GMs have weights on there flex plate,


Bill Loutzenheiser VP-CTO
Phoenix Castings
Central Nebr., USA