250 tb head

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Oct 19, 2003 | 09:11 PM

BT250racer

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Pro Rider

Joined: Aug 2003

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250 tb head

hey i was thinking about milling down my tb head but i wasnt sure upon how many thounsanths i should mill it down so what do u guys think?? and would 92 octane be the gas to use then?

Oct 20, 2003 | 07:05 AM

GrimRipper

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Joined: Sep 2003

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250 tb head

If you shave it .015" you'll probably need to go with 93. If you go to .025" you will definitely have to use cam2.

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