twinzr900 Posted August 20, 2008 Report Share Posted August 20, 2008 ok i trail ride and ride fast down paved back roads. my current set up is D&D trail port and cool head (pump domes) (and wanna stay w/ pump gas),cpi pipes,v-force 3 reeds w/ spacers,k&n filter no lid and snorkel. (ride some mud),hot rods 4 mil stroker rank w/ 5 mil long rods. bored .20 over wesico pro lites. i still run stock carbs which i know is choking the motor alot. so what should i do next. i was looking at 34 lectron carbs. or 35 air strikers. any other suggestions would help and any big bore kits or cylinders i can get to make more HP thats more trail friendly then the cubs? thanks. Quote Link to comment Share on other sites More sharing options...
Hilarious Posted August 20, 2008 Report Share Posted August 20, 2008 where are you at on your suspension? is your bike hooking up with what you have now? Quote Link to comment Share on other sites More sharing options...
twinzr900 Posted August 20, 2008 Author Report Share Posted August 20, 2008 all stock. whats the cheapest way to go w/ suspension and hooks up decent i guess could be better Quote Link to comment Share on other sites More sharing options...
4stroker Posted August 20, 2008 Report Share Posted August 20, 2008 you will benefit hugely from a bigger set of carbs what brand/type carb you choose is up to you but as long as its around 35mm, and you team them up with a new intake and vf3 reeds, you will probably gain 7-10hp. i would upgrade the carbs before you resort to an aftermarket top end, if you still want more power at least you can use the same intake/carb set up on the new top end (if its a cub) also something to think about is ignition timing. Quote Link to comment Share on other sites More sharing options...
TeamRealtreeHD Posted August 20, 2008 Report Share Posted August 20, 2008 Go to better sespension mods, maybe a little bigger (+2) swinger, and get 35mm PWK Keihins Quote Link to comment Share on other sites More sharing options...
twinzr900 Posted August 20, 2008 Author Report Share Posted August 20, 2008 you will benefit hugely from a bigger set of carbs what brand/type carb you choose is up to you but as long as its around 35mm, and you team them up with a new intake and vf3 reeds, you will probably gain 7-10hp. i would upgrade the carbs before you resort to an aftermarket top end, if you still want more power at least you can use the same intake/carb set up on the new top end (if its a cub) also something to think about is ignition timing. i do have an adjustable timing plate i forgot to list that its set on plus 2 oe 3 now i cant remeber. Quote Link to comment Share on other sites More sharing options...
4stroker Posted August 20, 2008 Report Share Posted August 20, 2008 yeah leave it there for a happy compromise more timing will give better bottom end but take away from the top end. Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted August 21, 2008 Report Share Posted August 21, 2008 So do you want a trail bike or a fast drag or speed oriented bike? Your parts are all over the map here, and none of them are matched up to each other. What compression is it? Pump gas domes can be anywhere from 90psi all the way up to 165psi. Are the domes machined, or is there a spacer plate on this thing? Do you know what the exhaust duration is? Whats your squish at? Did you assemble the motor, or did the builder do it? I ask all this, because you want to make sure you have done everything right so far before you go throwing more parts on it. Quote Link to comment Share on other sites More sharing options...
twinzr900 Posted August 21, 2008 Author Report Share Posted August 21, 2008 (edited) no a guy that i know built the bike he is a local builder and does tons of work. i want a fast trail bike. my compression is at 160 right now. no spacer plate domes are matched. Edited August 21, 2008 by twinzr900 Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted August 21, 2008 Report Share Posted August 21, 2008 I agree with snop on this one. Are you trying to build a good trail motor or an aggressive play/drag motor. Where are you wanting more power, in the top end or bottom to mid. 35mm carbs are way overkill on a trail motor. The CPI's are working against your current portwork(if it is in fact a trail port). If you want a good midrange trail motor, ditch the CPI's in favor of some Pro-Circuits, PT mids or even FMF's. Go no larger than 30's for carbs, preferably 28's. You'll see a huge bottom to mid increase. Timing was also mentioned and a good mod whatever you decide to build. If you want a strong top end motor, keep the CPI's and have the portwork matched to them. 32-35mm carbs would be ideal for that setup. As mentioned you will want a longer swingarm if you go this route. Or go somewhat middle of the road with the same pipes metioned earlier or even T-5's and no larger than 32's for carbs. It would help a ton to know where your exhaust and transfer durations are at, so I could recommend the perfect pipe to get the most out of your portwork. Hope that all helps a little. Quote Link to comment Share on other sites More sharing options...
Michael Jackson Posted August 21, 2008 Report Share Posted August 21, 2008 dont overlook the suspension you can have all the power in the world, but its no good on a stock suspension. especially a banshee's Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted August 21, 2008 Report Share Posted August 21, 2008 I agree with snop on this one. Are you trying to build a good trail motor or an aggressive play/drag motor. Where are you wanting more power, in the top end or bottom to mid. 35mm carbs are way overkill on a trail motor. The CPI's are working against your current portwork(if it is in fact a trail port). If you want a good midrange trail motor, ditch the CPI's in favor of some Pro-Circuits, PT mids or even FMF's. Go no larger than 30's for carbs, preferably 28's. You'll see a huge bottom to mid increase. Timing was also mentioned and a good mod whatever you decide to build. If you want a strong top end motor, keep the CPI's and have the portwork matched to them. 32-35mm carbs would be ideal for that setup. As mentioned you will want a longer swingarm if you go this route. Or go somewhat middle of the road with the same pipes metioned earlier or even T-5's and no larger than 32's for carbs. It would help a ton to know where your exhaust and transfer durations are at, so I could recommend the perfect pipe to get the most out of your portwork. Hope that all helps a little. I agree. So what do you want, not what is it right now? Quote Link to comment Share on other sites More sharing options...
POORBOY350 Posted August 21, 2008 Report Share Posted August 21, 2008 (edited) Sorry to be off topic but this sight is great man yal have great info and are really helping ppl out. thats cool :cool: also are yal saying the CPI's are working against him because they are for more of a speed/drag bike than a trail bike? and what kind of porting are yal saying goes with them. cause i plan or building an aggressive play/drap bike soon and i have pro-circuits and if cpi's are better for me and you want some pro circiuts pm me if you wanted to trade or something. Edited August 21, 2008 by POORBOY350 Quote Link to comment Share on other sites More sharing options...
2004LEBanshee Posted August 21, 2008 Report Share Posted August 21, 2008 (edited) Trail port ------------------------------------------------Dune/play ---------------------------Drag 2in1/FMF/Pro circuits/ T5's --------------------- T5's/CPI/Shearer(sp) ----------------CPI/Shearer(sp) Give or take. Kinda in that order Edited August 21, 2008 by 2004LEBanshee Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted August 22, 2008 Report Share Posted August 22, 2008 I dont really recommend the T5 or a 2 into 1 for a trail motor. FMF made about 5 different pipes, so you will have to clarify on that one. Quote Link to comment Share on other sites More sharing options...
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