bbv69 Posted March 21, 2004 Report Share Posted March 21, 2004 hey all i ran 30 pilots and 320 mains, it was a little rich. i dropped to 300 mains and changed to the 4th cliip now it has major bog and feels like the motor is cold, from idle to top. did a plug chop and looks close chocolate brown color. whats do you suggest? feels ok once reved but at botom and top feels like the engine is cold/doggy. 2004 banshee reed spacers boydston pro carbon fiber reeds pro circuit pipes and silencers k and n filter box 3 1'" holes no snorkel 300 mains, 30 pilots, 4th clip boost bottle Quote Link to comment Share on other sites More sharing options...
Otis Posted March 21, 2004 Report Share Posted March 21, 2004 Plug chop verifies the mains..so if your getting that Choc brown(2MM) you should be good there. If your getting a bog right off idle to about 3/4 throttle, try going to a 27.5 pilot, and put the needle back in the stock position. Some of the more seasoned guys may have diff(better) advice.... Have you checked out the jetting FAQ?? if not, it'll help you quite a bit.. Quote Link to comment Share on other sites More sharing options...
Banchetta Posted March 21, 2004 Report Share Posted March 21, 2004 Does it sound like its breakin up?? Like spittin and sputtering like the choke is on?? If so, then your running too rich on either the pilot or needle...Does it idle and start great?? If so, then leave the pilots for now...Lower the needles...I normally suggest to raise them, but larger pilots will affect the needle height and will have to lower them because of this...I only suggest larger pilots for Pc pipes since they run so lean on the bottom...try lowering the needles to the 2 clip from the blunt end and go from there...You can also diagnose quickly by taking the air box cover off, this will lean it out and give you a lot more hp..the air box holds back a lot...Try the air box cover first, if it still persist then try lowering the needles, if it still persist then try disconnecting the tors above the left exhaust and the parking brake switch....another thing to check is to make sure you put the equalizer tube back on between the carbs after you pull them out.... Quote Link to comment Share on other sites More sharing options...
MotulMonsta Posted March 21, 2004 Report Share Posted March 21, 2004 Did you mess with your air screws? If you put larger pilots in and didn't adjust your airscrews, it's going to be off. Quote Link to comment Share on other sites More sharing options...
bbv69 Posted March 22, 2004 Author Report Share Posted March 22, 2004 airscrews 2 turns out, it was running ok with the 320 mains, stock position, 30 pilots . It just looked a little rich on the plug chop i prolly shouldnt have messed with it but i wanted to get it dead on, what if i go back to the 320's and just move to the 2nd notch. Quote Link to comment Share on other sites More sharing options...
sredish Posted March 22, 2004 Report Share Posted March 22, 2004 Does it sound like its breakin up?? Like spittin and sputtering like the choke is on?? If so, then your running too rich on either the pilot or needle...Does it idle and start great?? If so, then leave the pilots for now...Lower the needles...I normally suggest to raise them, but larger pilots will affect the needle height and will have to lower them because of this... You shouldn't be changing the main unless your rich or lean at wide open throttle. The first thing you need to do is establish your base for the main. Get your main set to where it needs to be, then dial in the pilots. I don't think I'd go up to the 2nd position, the 3rd is the least I'd go with pipes, and the 4th should be okay at your elevation when jetted properly. Keep it in the 3rd position, get your mains then adjust the needle for midrange response. One thing, when your making changes to the carbs and things. Try to only do one thing at a time. This way if it bogs after a single change then you know what caused it, instead of changing the main, needle and air screw then you don't really know where the problem came in. It's easier to just go in and change everything, but you can lose track of what change caused what symptom. Personally, i like it on the rich side of the line. Quote Link to comment Share on other sites More sharing options...
bbv69 Posted March 23, 2004 Author Report Share Posted March 23, 2004 Ok went back to the 320's and left the needles on the 4th notch, basically the same setup as i started with, by lowering the needles i should get more throttle response from idle right? Well its worse now, and the choke doesnt make any difference on or off ussually it wont hardly run with the choke on now it runs normal. Did i mess something up in there when i took it apart any suggestions? Quote Link to comment Share on other sites More sharing options...
sredish Posted March 23, 2004 Report Share Posted March 23, 2004 The first thing you need to do is establish your base for the main. How is the main. I wouldn't worry about your off idle response until your main is jetted correctly. Once you get the main jet right, then you can work down through the jetting circuits to dial it in. You may or may not need to run the 4th notch, that is richer than the 3rd and if you have problems with the 4th, then back off one and see how it performs then. Quote Link to comment Share on other sites More sharing options...
Banchetta Posted March 24, 2004 Report Share Posted March 24, 2004 Choke has no affect....did you swap the bowls on the carbs?? one bowl has a brass tube and little jet in the bottom for the choke, make sure that bowl goes onto the choke carb....when you say bog, does it spit and sputter or just hesitate before powerband?? How does it start? Does it start hard when cold? do you have to use the choke?? I need as much detail as possible... Quote Link to comment Share on other sites More sharing options...
bbv69 Posted March 24, 2004 Author Report Share Posted March 24, 2004 well i was about to stay at home this weekend instead of going to waynoka with my friends because i was so pissed at the thing. Then i decided to give it once last once over, i took the tops off the carbs and realized the slides were in the wrong carbs......i moved the needle back to the 3rd groove, kicked it over and it started idling high and sputtering like before, i took it in the field and revved it to the moon hoping it would explode, and then the powerband hit and it was like it was before. i rode for 10 minutes , set the idle then rode it around a little more, i still have some low end bog in first and second before it hit the band, and second falls out of the band then back in, but the rest of the gears are solid. I am happy as hell thanks for the help to bad your advice didnt cover my stupidity. I am at 320's, 30's, 2 out, 3rd clip. I did another plug chop and its really dark black all over, and gas on the plugs. Tomorrow eve i will drop the mains to 300's and see how close it is, then mess with the air screws im done with the slides and needles those throttle cables are a pain in the ass HEre is advice for all, check or mark the slides before you take them out it runs like shit otherwise Quote Link to comment Share on other sites More sharing options...
sredish Posted March 24, 2004 Report Share Posted March 24, 2004 if it's running decent, go to 300 on the mains, try the needle in the 4th again and run the shit out of it. I bet it'll run good, just make sure the slides are correct after trying the needle again. Seriously, they like the 4th clip with pipes. Glad to hear your getting to the end of your problem. Later. Quote Link to comment Share on other sites More sharing options...
bbv69 Posted March 26, 2004 Author Report Share Posted March 26, 2004 OK i got the mains perfect, 280's the bastard with pull em up in 5th now on the highway. did a plug chop looks dead on. Now it wont idle and backfires at low rpms, i am still running the 30 pilot should i drop to a 27.5? do you all think this will get rid of this shit, the airscrews didnt help either way no change. I am happy though it runs like a striped ape other than the idle. Quote Link to comment Share on other sites More sharing options...
Banchetta Posted March 28, 2004 Report Share Posted March 28, 2004 Lower the needle one clip...the pilots are already richening the needle circuit, so you have to lower the needles to compensate.. Quote Link to comment Share on other sites More sharing options...
bbv69 Posted March 30, 2004 Author Report Share Posted March 30, 2004 Well i got to little sahara on saturday and the shee was running like shit, shooting flames and poping out of the exhaust. I was thinking about driving it off a cliff and then it started pouring rain. We got back to the house we rented and i was taking it apart and this guy comes over and says his buddy that is staying next door is a banshee mechanic. Turns out he is friends with toomey and has been building them since 89. He took my carbs apart 4-5 times and dialed it in perfectly. The final settings were stock 25 pilot, 260 mains, needle second notch from the top. So whoever told me to start at 320's you need to make sure your settings are right because i was blowing gas out my cylenders around my pipes after i got it dialed in right. He said his ported and bored 98' runs on 300 mains and thats in texas same elevation as me 500-1000'. He also told me never to mess with the pilots on a banshee only the needle height once the mains are close. Quote Link to comment Share on other sites More sharing options...
sredish Posted March 30, 2004 Report Share Posted March 30, 2004 Just to show you how different these bikes can run, my banshee with the mods below and stock carbs ran a 310 main, 27.5 pilot and 4th clip on the needle, and that's at 600'. The motor was more or less stock other than pipe, vforce reeds and a pro flow adapter and air box cut on the back. One can run 310 and the next just alike run a 260. Now I run a single carb and most run a 180 to 190 with similar mods, I'm running a 220. Go figure. That's why NO ONE can tell you the jetting, it all boils down to trial and error, everything else is just starting points. Glad it's running good now. Quote Link to comment Share on other sites More sharing options...
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