exhaust porting

Does your Spree/Elite already run great, and you're trying to make it quicker/faster? Need a monster motor swap? Discuss your ideas here.

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gobucks
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exhaust porting

Post by gobucks »

just wondering, how much of the exhaust port can you grind out with still having the right amount of back pressurel to run properly?
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noiseguy
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Post by noiseguy »

Didn't we already have this discussion?
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gobucks
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Post by gobucks »

yeah, but now i have a yamaha jog that i just bought so, i presently don't need the elite, which allows me to work on it.
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maddog
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Post by maddog »

If you can afford a 70cc polini evolution bore kit, it helps but nothing beats a honda!
some people dream of speed, i own your dreams!
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