kamp0ss Posted August 8, 2011 Report Share Posted August 8, 2011 (edited) I've been attempting this for a couple months now, and am very close to giving up. Alright, so here is the simple version of what has happened thus far... Attempt 1: One very helpful gentleman from this website walked me through the process of jetting and told me to go from Mains Jets down to Pilot Jets. We talked daily and conversed for a couple weeks and it seemed as though we were very close. However it was not quite perfect, and he said the last attempt would be to lower the carb floats 2mm. I was later told this wasn't safe, and put them back to stock height. We finished with 280-300 Mains (don't remember exactly), 2nd needle clip, and 27.5 pilots. Attempt 2: I fiddled around with it until I got the best throttle response. I ended up with 27.5 pilots (slight bog at start), 2nd needle clip, and 330 Mains (without plug chop) Attempt 2: Another helpful gentleman from this website walked me through a different process starting with the Pilot Jets and working up to the Main Jets. I took down many notes, and referred to the Banshee Toolbox for extra guidance because they were virtually the same. I tuned the idle, and it was good. Drove it around good under 1/4 throttle to test response and had the air screw at 1 and 1/8 turns out and 27.5 pilot. That was perfect. I moved onto the needle and it was a bit sputtering when pushed pass 1/4 throttle so I moved the needle clip to the top. and now it started bogging at start and ran like shit, so I moved it back to the 2nd and left it alone. Currently I have 27.5 Pilots, 2nd clip from top, and 330 Mains. I am guessing the reason my needle clip caused such havoc was because my Mains are entirely too high. Unfortunately I live in an Urban area, and cannot do plug checks daily to find out what to do. I have a feeling they are too large, but don't know what to drop them too. I know that the clip and the main work together at some point, and that is why I think it ran badly after moving the needle clip up. If anyone can please help me get an idea of what I need to do for my last attempt it would be greatly appreciated. My mods and information follow: 2006 Yamaha Banshee TORS Removal Stock Airbox, With Foam Holes, No Lid K&N Filter with Outerwears +3 Timing Plate Pro Circuit Pipes V-Force Reeds 145 PSI in each piston 40:1 200-600ft above sea level New England weather (60-90 F) **I don't have any air leaks or anything, so please don't ask if there are any mechanical problems. Edited August 8, 2011 by kamp0ss Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted August 8, 2011 Report Share Posted August 8, 2011 What exactly is the bike doing? The pilot is right on. Have you adjusted the air screws at all? I assume you've done a WOT plug check and the plugs look ok? That main sounds pretty high considering you have a stock port motor. Quote Link to comment Share on other sites More sharing options...
kamp0ss Posted August 8, 2011 Author Report Share Posted August 8, 2011 What exactly is the bike doing? The pilot is right on. Have you adjusted the air screws at all? I assume you've done a WOT plug check and the plugs look ok? That main sounds pretty high considering you have a stock port motor. The bike has bog at start, and sputters up top. I had it idle and tuned it to 1.5 for fastest idle, then rode at quarter throttle and under to check throttle response and had it dialed in at 1 and 1/8 turns out. That was perfect. Then I went to do the needle and it went down hill. I haven't done a plug chop with the 330s in, I am pretty sure it is too high. Do you have any guess what would be a range to test in? I had it at 280 before, i am debating going back but don't want to jump down a lot and run too lean. Quote Link to comment Share on other sites More sharing options...
#1JUANstunna Posted August 8, 2011 Report Share Posted August 8, 2011 I had a similar set up @ 1500 ft. 300 mains, needle in the middle, 27.5 pilots, 1 1/4 turns on the air screw. Indiana weather. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted August 8, 2011 Report Share Posted August 8, 2011 Get your mains set and go from there. I'd throw 300's in it and do a plug check. Leave the pilot at 27.5 and put the clip in the middle of the needle. Last, from idle, stab the throttle and see what it does. Adjust the air screw accordingly so that there is no bog or hesitation when you stab the throttle off idle. Quote Link to comment Share on other sites More sharing options...
Pasi S. Posted August 8, 2011 Report Share Posted August 8, 2011 Remember that I am not a pro, but I have been fighting to get my bike to run right. The bike has bog at start, IMO because you have leaned it from the needle. It will need more gas to rev up. and sputters up top. Yes, because you have too large main jets. If my carb settings are all faked up, I allways start from the main jets and work down from there. First I will put my needles up to 5.th position and air screw 3 turns out, and mains big enough. Then I´ll start to lean it from the mains to find out the best power. After I can´t feel any more power or it will only rev good but the power feels weak, I go back one size. Then I´ll start to lean my needle to clear out the mid-range and test the throttle respond from the half throttle to WOT. If the midrange feel "fresh" and "light" and the bike runs good, but it will bog a little, I usually go up one size from the mains. If it will bog bad, you have to raise your needle one step. After you have figured your mains and the needle you need to adjust your air-screw to get a good throttle respond and good starting. If it´s best close to 3 turns out, I think your pilots are too large, and if it´s best close to 1 turn out, you should go one size larger pilot. just my 0.02 € If this does not make any sence to you, ignore it. I can´t explain it better in english. -Pasi S. Quote Link to comment Share on other sites More sharing options...
kamp0ss Posted August 9, 2011 Author Report Share Posted August 9, 2011 IMO because you have leaned it from the needle. It will need more gas to rev up. Yes, because you have too large main jets. ---> On the toolbox it said, "If the bike sputters or sounds rough when giving it throttle, it's rich, raise the clip." That is why I did that. First I will put my needles up to 5.th position and air screw 3 turns out, and mains big enough. ---> I am not sure what "big enough" on the mains means, because I do not have a clue what my mains should be. Of course 330 is too big to be a starting point, and I feel like 280 is where I want to be, but don't have adequate room to do a plug check. Then I´ll start to lean my needle to clear out the mid-range and test the throttle respond from the half throttle to WOT. If the midrange feel "fresh" and "light" and the bike runs good, but it will bog a little, I usually go up one size from the mains. If it will bog bad, you have to raise your needle one step. ---> Do you do the choke test during this process? After you have figured your mains and the needle you need to adjust your air-screw to get a good throttle respond and good starting. ---> I got this part down. Quote Link to comment Share on other sites More sharing options...
kamp0ss Posted August 9, 2011 Author Report Share Posted August 9, 2011 Get your mains set and go from there. I'd throw 300's in it and do a plug check. Leave the pilot at 27.5 and put the clip in the middle of the needle. Last, from idle, stab the throttle and see what it does. Adjust the air screw accordingly so that there is no bog or hesitation when you stab the throttle off idle. I don't have the room to do plug chops. I just have to go by feel for now until I have a weekend I can go to my other house and open it up. I am pretty sure I will be between 280-300 mains with 27.5 pilots. Do you think 3rd clip on the needle would be a good starting point? Quote Link to comment Share on other sites More sharing options...
volcrano Posted August 9, 2011 Report Share Posted August 9, 2011 yes 3rd clip.esp. if u had it on 2nd and it ran ok,then u went to 1st and it was worse.then that tells u it wants fuel. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted August 9, 2011 Report Share Posted August 9, 2011 I don't have the room to do plug chops. I just have to go by feel for now until I have a weekend I can go to my other house and open it up. I am pretty sure I will be between 280-300 mains with 27.5 pilots. Do you think 3rd clip on the needle would be a good starting point? You don't need to ruin a set of plugs to check the jetting. Just check the color on the strap. Start with clip in the middle spot. Quote Link to comment Share on other sites More sharing options...
camatv Posted August 9, 2011 Report Share Posted August 9, 2011 i've never done a "plug chop" Quote Link to comment Share on other sites More sharing options...
kamp0ss Posted August 9, 2011 Author Report Share Posted August 9, 2011 Should I drop my Mains down to 300? My plugs now are pretty black. Ill leave 27.5, I'll switch needle to 3rd. What should I start with for mains? Quote Link to comment Share on other sites More sharing options...
kamp0ss Posted August 10, 2011 Author Report Share Posted August 10, 2011 I just ran it with 300 mains, middle clip, and 27.5 pilot with 1.5 turns on the air screw. I could only do full throttle up to 4th gear, but it felt really good. The only thing I noticed was a little bit of hesitation in the wind up. It was definitely bogging on the needle clip though, I think 2nd clip is the right spot. Should I drop to 290 or wait til I can do a plug chop? Can I do a plug chop with 4 gears WOT? Quote Link to comment Share on other sites More sharing options...
LS3 Machine Posted August 11, 2011 Report Share Posted August 11, 2011 I just ran it with 300 mains, middle clip, and 27.5 pilot with 1.5 turns on the air screw. I could only do full throttle up to 4th gear, but it felt really good. The only thing I noticed was a little bit of hesitation in the wind up. It was definitely bogging on the needle clip though, I think 2nd clip is the right spot. Should I drop to 290 or wait til I can do a plug chop? Can I do a plug chop with 4 gears WOT? 4th gear is fine, you dont need all gears. Make your changes one at a time. If it feels like you are going in the right direction, change it, then do a plug chop. Im sure someone with more experience than me will chime in. Good luck and keep us posted. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted August 11, 2011 Report Share Posted August 11, 2011 300 is probably still to rich, but if it's running pretty good now I wouldn't risk blowing anything up. Wait until you can do a WOT plug check. No need for a plug chop. Once you determine if the main is rich or not, go from there. Don't even mess with the needle until the main is spot on. Quote Link to comment Share on other sites More sharing options...
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