[DeTomaso] I *hate* it when that happens....
MikeLDrew at aol.com
MikeLDrew at aol.com
Fri Mar 23 12:22:25 EDT 2012
In a message dated 3/23/12 9 18 27, kenn_green at yahoo.com writes:
> Regarding balancing, my concern is that when you drill out existing
> threaded holes it's easy to be a little off.
>
>>>If *I* was to do it, with a hand drill, then maybe. I'm going to have
a machine shop do it with a drill press.
> > If the pressure plate is shifted even a little, it could throw off the
> balance of the engine.
>
>>>Very true!
> > I don't think the wear of the friction surface of the pressure plate is
> nearly as much of a factor as the whole pressure palte being shifted. But
> it would be best to run it past the engine builder (Dan Jones?) and see
> what he says.
>
> I was told that some engines are balanced as a whole, and the specific
> balance of the flywheel and pressure plate may not be independent of the
> crankshaft. A friend who has built a lot of engines for vintage racing said
> when he changes to a new flywheel pressure plate combination, he has it
> matched to the previous flywheel and pressure plate to maintain the original
> balance.
>
>>>A great idea, when possible. Although I sent my aluminum flywheel to
have it balanced with the engine when it was built, it's my impression that
this step wasn't done. :<(
So, I'm no more likely to hurt it than I am to help it by having the holes
drilled to the next larger size....
Mike
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