banshee.brian Posted June 17, 2011 Report Share Posted June 17, 2011 i got a banshee bored out 040 with weisco top end. port polished head. trinity two into one carb. im running a 190 main jet with fmf fatts full set. it runs good i just got it back together. but it will will only run 79.6 mph i think it should run alot more than that? am i wrong? Quote Link to comment Share on other sites More sharing options...
banshee.brian Posted June 17, 2011 Author Report Share Posted June 17, 2011 i think you are smoking something. your set up will not hit 80mph. well i put a gps on it. what mph would i be lookin for Quote Link to comment Share on other sites More sharing options...
Coupelx Posted June 17, 2011 Report Share Posted June 17, 2011 Your bike should do 90-95 easily. Quote Link to comment Share on other sites More sharing options...
banshee.brian Posted June 17, 2011 Author Report Share Posted June 17, 2011 Your bike should do 90-95 easily. thats what i was thinking but idk why she wont that. what do you think im doing wrong? Quote Link to comment Share on other sites More sharing options...
banshee.brian Posted June 17, 2011 Author Report Share Posted June 17, 2011 what is your gearing. also what carb you running? and you dont port and polish a head, you cut a head and you port your jugs its a Keihin carb and i got a 13 front and a 41 rear (stock) im going with a 14 front now. i just got it in and havent put it on yet. but a atock banshee runs 80+ thats why i was asking what i could be doing wrong Quote Link to comment Share on other sites More sharing options...
05Twin350 Posted June 17, 2011 Report Share Posted June 17, 2011 I Hit back to back runs of 93mph and a run of 94mph on my bike, but I am at sea level. My gearing is 16/38; longer gears. Stock bike does 70-72mph. With your setup your should be in the high 70's to low 80's.. Quote Link to comment Share on other sites More sharing options...
barahonapr Posted June 18, 2011 Report Share Posted June 18, 2011 I have a stock 05 Banshee and o hit 75 and was pulling away.. Quote Link to comment Share on other sites More sharing options...
06specialedition Posted June 18, 2011 Report Share Posted June 18, 2011 Something is wrong with your bike, you should be able to do 100mph easy Quote Link to comment Share on other sites More sharing options...
banshee.brian Posted June 18, 2011 Author Report Share Posted June 18, 2011 a stock banshee is lucky to hit low 70s. also what size carb, a 190 main is huge for your set up. also with 13/41, and a 20" rear tire, at 9500, you will be going roughly 72mph. with a 14/41, you will be able to get upto like 76mph. im sorry i got a 14t 41t now im going to 15 front. what size jet should i be runnning. my bottom end and med range is awesome i just thought it would run faster on top end. it will pull wheelies in fourth. first second just spins on the road Quote Link to comment Share on other sites More sharing options...
banshee.brian Posted June 18, 2011 Author Report Share Posted June 18, 2011 what size is your carb. i run a 38mm and i only have a 160 main. i am going down a size soon because that was in the winter and it is starting to run rich. i think its a 35mm but would going down on my jet make it run better than it does now? Quote Link to comment Share on other sites More sharing options...
camatv Posted June 18, 2011 Report Share Posted June 18, 2011 oh boy... better start saving for a engine rebuild.. Quote Link to comment Share on other sites More sharing options...
LS3 Machine Posted June 19, 2011 Report Share Posted June 19, 2011 i got a banshee bored out 040 with weisco top end. port polished head. trinity two into one carb. im running a 190 main jet with fmf fatts full set. it runs good i just got it back together. but it will will only run 79.6 mph i think it should run alot more than that? am i wrong? Well you have 6 posts here.... so welcome! When I was new (I still am... only had my Banshee a couple months). I posted up here about converting to a single carb, and everyone seemed to be against it. Think about it, the fuel from the one carb has to split evenly down a Y manifold and into the 2 intake ports, there is know way that thats going to work as well (performance wise), as a carb spraying fuel directly into each individual intake manifold. I recommend ditching the single carb setup, and of course re-gearing. I guess top speed is important to you. I dont really care about op speed on my banshee,... I just want a broad, useable power curve that really pulls all the way thru to the top. Just my .02 cents, do what makes you happy! Good Luck and keep us posted on your results. Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted June 19, 2011 Report Share Posted June 19, 2011 oh boy... better start saving for a engine rebuild.. haha.....cam i was just thinkin the same thing. look brian....banshee's aren't about top speed.....YES...they are fast. YES they are fun. YES people know the banshee.....but who wouldn't after like 23+ years of production..... top speed on a banshee isn't important if your riding trails.....hell think about it.....even if your drag racing friends......how often do you make it into 6th gear before they realize they've lost and throttle out of the race? either way if your building a trail rider and your worried about top speed......you might as well go out and build a funny-car and trail ride it......your gonna be moving WAY too fast to work the trails. Quote Link to comment Share on other sites More sharing options...
Coupelx Posted June 19, 2011 Report Share Posted June 19, 2011 thats what i was thinking but idk why she wont that. what do you think im doing wrong? posting stupid threads like this one. Quote Link to comment Share on other sites More sharing options...
banshee.brian Posted June 20, 2011 Author Report Share Posted June 20, 2011 haha.....cam i was just thinkin the same thing. look brian....banshee's aren't about top speed.....YES...they are fast. YES they are fun. YES people know the banshee.....but who wouldn't after like 23+ years of production..... top speed on a banshee isn't important if your riding trails.....hell think about it.....even if your drag racing friends......how often do you make it into 6th gear before they realize they've lost and throttle out of the race? either way if your building a trail rider and your worried about top speed......you might as well go out and build a funny-car and trail ride it......your gonna be moving WAY too fast to work the trails. I REALIZE THAT AND I DO ALOT OF TRAIL RIDING AND THE PLUGS START TO FOUL OUT. IT DONT LKE TO RIDE THE TRAILS. BUT YOU GET IN THE OPEN AND IT EUNS BETTER. WHAT COULD I DO TO GET IT TO RIDE BETTER IN THE TRAILS? Quote Link to comment Share on other sites More sharing options...
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