'99350t Posted June 8, 2007 Report Posted June 8, 2007 well when i rebuilt my banshee the last time i did some home porting which turned out well, but iam looking for some more midrange/topend. has anyone got any tips or pictures? i tried a search but a flood control thing keeps coming up? Quote
EastCoast Banshee Posted June 8, 2007 Report Posted June 8, 2007 I think its something to do with the exhaust height that helps out with mid to top range. Then again i really dont know the whole porting thing to me is confusing. In my opinion id send it out if you want a proper job. Im sure jeff at fast racing wouldn't care if you gave him a call. Quote
BigRed350x Posted June 8, 2007 Report Posted June 8, 2007 Raising the exhaust and transfer durations will provide more top end. But there's a LOT involved in the angles, window size proportions to bore size, degrees of crank rotation that each particular window is open and closed, blah blah blah. go over to planetsand for some more information about it. Do a search for blowdown theory and you will get a lot of usefull information. There's a LOT more involved than you think. Its black magic I tell you! black magic! lol Quote
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