Derpy Drifter Posted November 24, 2016 Report Share Posted November 24, 2016 Hi all, I'm Dylan. Been riding a couple banshee occasionally for a few years now but just recently was able to get my own. I fell in love with the banshee as soon as I sat down on a friend of mine's. Anyway, I just got my banshee, and I've been working on the tune. It was running WAAAYYY rich at first, and had bad gas in it. I drained the old fuel and put in fresh stuff, doubled the power easily. Then I started leaning it out because it was bogging down low reallllly bad but in the higher rpms it suddenly hit a massive power band. I'm running pretty lean now, and it seems good. I'm making a lot of power in the high rpms, so much so that it does a wheelie without popping the clutch even in 3rd gear. My questions are, is that normal or is it running wrong? (the other banshee I've ridden a few times NEVER had enough power to pull the front wheels without popping the clutch and didn't hit as large of a power surge as mine does, so I really have no idea here) And what reeds (and/or other mods) would be good to make some more low-end power for trail riding but not sacrifice my high rpm power? P.S. I did do a search of the forums here and couldn't find any that answered my specific questions, so if this is an unnecessary thread. Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted November 24, 2016 Report Share Posted November 24, 2016 Is your motor ported? What are ALL of your motor mods and what is your jetting at. No body will be able to answer your above question without knowing those first Quote Link to comment Share on other sites More sharing options...
Derpy Drifter Posted November 24, 2016 Author Report Share Posted November 24, 2016 My apologies, I thought the "My banshee" box would show on the thread page. My motor is brand new, was just built before I bought the banshee. It has "true welded crank and rods, wiesco pistons, new crank case, tors eliminator kit, stock reeds and carbs, FMF Gold pipes" As far as I know the jetting is stock as well however I haven't had a chance to disasemble the carbs for cleaning and inspection yet so I'm not 100% sure Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted November 24, 2016 Report Share Posted November 24, 2016 Well you said that you stared leaning it out quite a bit so im assuming that you changed the jetting? or no? Quote Link to comment Share on other sites More sharing options...
Derpy Drifter Posted November 24, 2016 Author Report Share Posted November 24, 2016 I didn't change the the jets out, I just been using the adjusting screws. It's been helping with the dogging in the low end but I'm worried to go any leaner and damage the engine in the high rpms. Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted November 24, 2016 Report Share Posted November 24, 2016 So how many turns out are your air screws then? It would be wise to figure out the jetting in your carbs that way you will get the right advice. Its very easy to do if you have never taken apart your carbs before, dont be intimidated by it. Look up how to do a plug chop that will give you an idea if you are too lean on your main jet. There is more to tuning your bike than just screwing the air screws in and out. Quote Link to comment Share on other sites More sharing options...
Derpy Drifter Posted November 24, 2016 Author Report Share Posted November 24, 2016 My air screws are 1 1/4 (one and a quarter) turns out right now. I will take apart the carbs soon, probably tomorrow morning if I have time. I'd do it tonight but I don't have a garage or shed, and I don't feel like working by flashlight in the 34 degree rain haha Quote Link to comment Share on other sites More sharing options...
STRIBZ Posted November 24, 2016 Report Share Posted November 24, 2016 take the reeds off while you have the carbs off and inspect the intake window and see if it's been touched. (ported) Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted November 24, 2016 Report Share Posted November 24, 2016 take the reeds off while you have the carbs off and inspect the intake window and see if it's been touched. (ported) I thought the same. Maybe has been ported so it doesnt make much power down low but he has fmfs but with those mods I didnt think so. Quote Link to comment Share on other sites More sharing options...
STRIBZ Posted November 24, 2016 Report Share Posted November 24, 2016 Probably fucking drag ported lol. you just never know lol Quote Link to comment Share on other sites More sharing options...
Derpy Drifter Posted November 24, 2016 Author Report Share Posted November 24, 2016 Well I'll find out tomorrow morning. I've set aside 4-5 hours to work on the banshee so I'll take the carbs and reeds off an give them both a good cleaning as well as disassemble the carbs Quote Link to comment Share on other sites More sharing options...
STRIBZ Posted November 24, 2016 Report Share Posted November 24, 2016 post pics of intake window when you have a peek in there. 1 Quote Link to comment Share on other sites More sharing options...
Derpy Drifter Posted November 24, 2016 Author Report Share Posted November 24, 2016 I'll just take pictures of all of it lol. I want to get this power band issue sorted out before I go hitting the trails because right now it would not only be annoying, but also dangerous if the power comes on that hard at the wrong time, it could flip me Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted November 24, 2016 Report Share Posted November 24, 2016 I'm I didn't change the the jets out, I just been using the adjusting screws. It's been helping with the dogging in the low end but I'm worried to go any leaner and damage the engine in the high rpms.The air screw is not making much difference up top. It's more or less helping off idle and starting. You need to be changing the actual jets to make a difference. 1 Quote Link to comment Share on other sites More sharing options...
Derpy Drifter Posted November 24, 2016 Author Report Share Posted November 24, 2016 I just got done workin on 'er. I took the carbs off and apart, cleaned them out thoroughly and put them back on. The main jets are 270s, I'm guessing that's too big for my engine correct? I also removed and cleaned the spark plugs as well as re-gapped them(they were up at .055 :0 I put them down at .030). All that made enough difference apparently that I had to completely change my idle screws because it wouldn't idle without stalling. Quote Link to comment Share on other sites More sharing options...
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