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Posted

I have seen you guys talk alot about litening the flywheel. I was wondering how much difference it makes performance wise, how much does it cost and who can do it. Is there anyone here close in ohio.my bike has pipes and a k-n filter with no lid i just want to pick it up a little.

Posted (edited)
It sounds like it is a good idea now who can do it can the local machine shop do it or does it take a special knowledge.

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Boonman knows exactly how much to take off of the flywheel. A local machine shop I doubt will know.

Edited by John19
Posted (edited)

Any good machine shop can handle that job for you,the shop that did mine never did one before,I just stood there when he was doing it and told him when to stop.

If you look at the flywheel there is dimpples on the outer face when he was done with mine you could just barely see them.

Off hand I just forget the ounzes you can take off,if you use the search on here I'm sure you will find it.

When he started to remove material from the flywheel the cutting tool was hitting and missing as the flywheel turned that's the reason for the dimpples drilled into the face from the factory to balance it!!

By removing the material on the lathe I would think that the flywheel would be balanced better than from the factory,Mine seems to have less viberation after it was lightened.

We weighed it before and after the job was done and if I recall now it was 9oz lighter .

Like everyone said it's well worth the money!!!

Take the head with you and shave 25 thou off it while your at it,they work well together.

Edited by Mr.Giggles
Posted
Any good machine shop can handle that job for you,the shop that did mine never did one before,I just stood there when he was doing it and told him when to stop.

If you look at the flywheel there is dimpples on the outer face when he was done with mine you could just barely see them.

Off hand I just forget the ounzes you can take off,if you use the search on here I'm sure you will find it.

When he started to remove material from the flywheel the cutting tool was hitting and missing as the flywheel turned that's the reason for the dimpples drilled into the face from the factory to balance it!!

By removing the material on the lathe I would think that the flywheel would be balanced better than from the factory,Mine seems to have less viberation after it was lightened.

We weighed it before and after the job was done and if I recall now it was 9oz lighter .

Like everyone said it's well worth the money!!!

Take the head with you and shave 25 thou off it while your at it,they work well together.

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try this site out I think is should help

http://www.roostfest.com/boonman.htm

Posted

Its well worth it!! And since you will have the flywheel off you might as well throw on a RS timing plate and advace your timing.

Posted
Do you need a special fly wheel puller to get the fly wheel off, or can you use something like a stearing wheel puller or gear puller?

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The puller has to have reverse threads on it to work with your fly wheel, mine was only like $12.00 at the local dealer

 

 

good luck

Posted

Definitely get a flywheel puller! I paid 9.00 for mine. Also if you have an air wrench (compressor) it makes it even easier to pull it.

Posted
Do you need a special fly wheel puller to get the fly wheel off, or can you use something like a stearing wheel puller or gear puller?

362179[/snapback]

 

Always use the correct thread in style puller!

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