NickisGod Posted August 27, 2008 Report Posted August 27, 2008 Ive just completed assembly of my banshee and now need help tuning the new cabrs. the carbs are Mikuni 39mm tm carbs setup up on a crossed over intake. my question is it seems like one side (the right) is producing more smoke (a white smoke) than the left side. i havent played around much yet with it, but i rather ask and have an idea of where to start to correct this problem. is this because one side is running richer than the other? what should i do, im sort of a newb to two strokes Quote
pr0blumz Posted August 27, 2008 Report Posted August 27, 2008 Ive just completed assembly of my banshee and now need help tuning the new cabrs. the carbs are Mikuni 39mm tm carbs setup up on a crossed over intake. my question is it seems like one side (the right) is producing more smoke (a white smoke) than the left side. i havent played around much yet with it, but i rather ask and have an idea of where to start to correct this problem. is this because one side is running richer than the other? what should i do, im sort of a newb to two strokes I'm pretty sure someone is going to ask what your setup and mods are. So, how about you do that. Are the pipes new? Quote
_Hex* Posted August 27, 2008 Report Posted August 27, 2008 I'm pretty sure someone is going to ask what your setup and mods are. So, how about you do that. Are the pipes new? hmm if it is white white smoke from the right side it is probably tranny oil from a bad crank seal, turn on the bike and put ur hand on the exhaust on the right side give it a little throttle and smell ur had see if it hints tranny oil Quote
dajogejr Posted August 27, 2008 Report Posted August 27, 2008 White smoke is usually coolant, dark smelly smoke is tranny fluid. First thing I'd do is make sure the carbs are sync'd up properly....they make a tool for it, but you can probably get it 95% close by eyeing it. Before you even fire the bike, did you do a compression and leakdown test? Quote
NickisGod Posted August 27, 2008 Author Report Posted August 27, 2008 nop, i did nothing test wise yet. i just completed the setup up and kicked it over. heres what my bike is at. toomey t6r, pro design cool heads with domes running on race gas, 39mm tm carbs with billet crossed over intake, 1/2 inc reed spacers,boss racing 12 drag filters, v forvce reeds. im not the first owner of this bike but i can assume its still on the stock bore and has never been ported either. the probelm dosent seem like its major, or effects the motors reving, i just figgured id ask before i rode it and something serious happend. thanks Quote
dajogejr Posted August 27, 2008 Report Posted August 27, 2008 39mm carbs are too much for a non-ported motor in my opinion. Stock porting does not flow the volume necessary to make them work well. They will work...but you might be losing some performance by a carb that big. 28 to 33 would be ideal for your setup. What do the plugs look like...by the way. Quote
NickisGod Posted August 28, 2008 Author Report Posted August 28, 2008 ive taken in carb size into consideration. my view is, if i buying 33mm carbs and then later having a drag port job and a big bore kit straped on ill end up upgrading again. right now i do agree these carbs might be alittle acessive but some day they'll find a good pair of matching jugs. im going to take my bike to the guy down the street who races two strokes, it'll cost me money most likely, but nothings free. Quote
pr0blumz Posted August 28, 2008 Report Posted August 28, 2008 You're not going to maximize the potential of the motor the way it is now with those big carbs. Quote
bigboybanshee Posted August 29, 2008 Report Posted August 29, 2008 First thing I'd do is make sure the carbs are sync'd up properly.... I think this is why you are smoking unevenly, I'd make sure both carbs are synced, not just the slides, your air screws, etc. too Quote
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