Quote:
Originally Posted by FugginZukin
I plan on cutting out the center of the flywheel, machining it down, and welding the pulley to the outer end of this. If this assembly is slightly off balance due to the weld, will the internal balancer be able to compensate for this?
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NO!!! NO!!! NO!!! That's just asking for poof-kaboom.
The balancer is designed for the parts in the engine as they come from the factory. It's there to deal with the engine's components as a whole and how they work with each other. Position of the crank in relation to the pistons, pistons in relation to each other and such. The engine's components are all supposed to be as close to each other in weight (pistons, rods) as possible from the start. Crank is dynamically balanced too.
Ending up with a flywheel that's out of balance is like having a tire that's out of balance. There's weight in the wrong spot swinging out around some point (center of the crank) and it's pulling all the way around it's little path, knocking everything else out of balance.
If it's bad enough (worst case scenario), it could actually fatigue and break off what ever it's attached to if the balance is out enough. - or shake the engine (and your teeth) to the point of failure.
If you mess w/the flywheel at all, you'll need to have it balanced once you're done. Not sure who can do that - but it is possible to do.