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Old 03-06-2006, 12:53 PM   #21 (permalink)
danthefamilyman
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Join Date: Mar 2006
Location: Salem, OR
Posts: 42
Default Re: Jima Y385T powered Mazda Pickup

(One question, didn't you have balance issues after you removed all of that meat from the flwheel?)

Yes I did. (I just added three pictures on "My Gallery" that shows the flywheel machining) The original flywheel had about seven 1/2" 'balancing holes' drilled in it. However once I dialed it in on the lathe it was discovered that the factory had machined the flywheel .0015 off center from the mounting flange. (This may not sound like much but is is huge with a heavy flywheel spinning at 2600 RPM) During the lathe operations the flywheel was brought to within .0002 of true center and I had to drill seven 1/2" holes on the other side of the flywheel to bring it back into balance.

If anyone would like to know how to balance a flywheel at home with no special tools to within 1/8 of an ounce let me know. I was taught how to do it by an old WWII machinist before he retired. (It's fairly simple once you see someone do it, but hard to explain on paper)

Thanks,
-Dan-
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