SFC Posted September 25, 2015 Posted September 25, 2015 got a bandit 12 motor with dothead , 36mm carbs stage 3 and yoshi pipe, its been running not too bad with 155 main jets but i have just replaced the exhaust system for a vance & hines pro pipe, its baffled and now bike runs a bit worse, dont want to remove baffles as its extremely load and need it for streetfighter sunday @ the raven so no time for dyno run, anyone else got this set-up and could point me in right direction ? Quote
Fula28 Posted September 25, 2015 Posted September 25, 2015 (edited) Try smaller mains, Think we ended up with 38mm headers and 38 m carbs, but jets were 148 mains. Little rich but pulled best . Edited September 25, 2015 by Fula28 1 Quote
nightrider Posted September 26, 2015 Posted September 26, 2015 didn't know a baffle was available. is it a smaller diameter then your Yoshi?How did the plugs look.Runs worse throughout the whole power band or.....? Quote
Oilyspanner Posted September 26, 2015 Posted September 26, 2015 All as above - as Nightrider has asked, is it full throttle and higher revs (mains) - more mid-range use (needle) ?If it has a stage 3 Dynojet - remember the jet sizes are different to MikuniĀ and you can't mix them.This is the carb setting up bible.http://www.factorypro.com/tech_tuning_procedures/tuning_carbtune,CV,high_rpm_engines.html 2 Quote
SFC Posted September 26, 2015 Author Posted September 26, 2015 thanking you all , got it running much much better, dropped the needle to 3rd, it still seems a little rich and maybe a little lumpy down low and could do with a dyno set-up but it will get me to the raven in the morn. much appreciated for all you help 1 Quote
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