KX4FIFSHEE Posted March 1, 2007 Report Share Posted March 1, 2007 Alright i have ridden my 04 banshee a few times now and it's a blast for sure !!!! I have a question about it though. I have ridden a stock banshee and the powerband is way harsh (fun). Mine has full pro circuit exhaust with the K&N's on the carbs. I can barely get it to leave from a stand still. I have to be high on the rpms to just barely get the wheels to go and even then it kinda bogs out. How can i tell if it's a clutch issue or if the powerband just sucks that low. I know nothing about these but i'm willing to learn. If this is the way the banshees are then thats fine but if not then i wanna fix it. Quote Link to comment Share on other sites More sharing options...
Dinner Posted March 1, 2007 Report Share Posted March 1, 2007 (edited) Sounds like the jetting could be way off. Your low end shouldn't be so bad that you can hardly get moving. I have full Pro Circuit exhaust, and i don't have to rev it up that much to get her moving. Do you know what your jetting is right now, air temperature and elevation? Edited March 1, 2007 by Dinner Quote Link to comment Share on other sites More sharing options...
FireHead Posted March 1, 2007 Report Share Posted March 1, 2007 You may want to check your compression. You may not have any. :thumbsup: Quote Link to comment Share on other sites More sharing options...
KX4FIFSHEE Posted March 1, 2007 Author Report Share Posted March 1, 2007 i have no idea what the jetting is but i do know it runs like a raped ape. I dragged a few 450's and it smoked em all so i'm pretty confident it's got compression...... Just looking for somewhere to start... once i get it out of the trailer and into the garage i'm gonna pull the plugs and take a looksie but thats about as far as i know to look. I did also notice last time out it would sputter just a little when riding it hard but after i put fresh fuel in it ran great with no probs the whole weekend... just seems like it lacks power on take off from a dead stop. Quote Link to comment Share on other sites More sharing options...
FireHead Posted March 1, 2007 Report Share Posted March 1, 2007 i have no idea what the jetting is but i do know it runs like a raped ape. I dragged a few 450's and it smoked em all so i'm pretty confident it's got compression...... Just looking for somewhere to start... once i get it out of the trailer and into the garage i'm gonna pull the plugs and take a looksie but thats about as far as i know to look. I did also notice last time out it would sputter just a little when riding it hard but after i put fresh fuel in it ran great with no probs the whole weekend... just seems like it lacks power on take off from a dead stop. I suppose that your gearing may be way off. Otherwise, I would still say your compression might be low. :thumbsup: Quote Link to comment Share on other sites More sharing options...
375hp banshees Posted March 1, 2007 Report Share Posted March 1, 2007 i have no idea what the jetting is but i do know it runs like a raped ape. I dragged a few 450's and it smoked em all so i'm pretty confident it's got compression...... Just looking for somewhere to start... once i get it out of the trailer and into the garage i'm gonna pull the plugs and take a looksie but thats about as far as i know to look. I did also notice last time out it would sputter just a little when riding it hard but after i put fresh fuel in it ran great with no probs the whole weekend... just seems like it lacks power on take off from a dead stop. what are your sprocket sizes... does it act like its geared high, low on power , acting up down low or reving but not going anywhere ? Quote Link to comment Share on other sites More sharing options...
KX4FIFSHEE Posted March 1, 2007 Author Report Share Posted March 1, 2007 I suppose that your gearing may be way off. Otherwise, I would still say your compression might be low. :thumbsup: it would have a lack of power though wouldn't it? One guy on a 450 told me he's beaten stock banshees before. When we went he was clearly left behind, we started on a roll though at the bottom of first. But anyway i can pull a compression check just to see... maybe tomorrow. Quote Link to comment Share on other sites More sharing options...
KX4FIFSHEE Posted March 6, 2007 Author Report Share Posted March 6, 2007 gearing is 14/41. Let me know what your thoughts are on that gearing because i have no clue. It's a desert runner. I'm gonna go attempt to do a compression check right now, we'll see if i actually get a chance to.... Quote Link to comment Share on other sites More sharing options...
KX4FIFSHEE Posted March 6, 2007 Author Report Share Posted March 6, 2007 (edited) gearing is 14/41. Let me know what your thoughts are on that gearing because i have no clue. It's a desert runner. I'm gonna go attempt to do a compression check right now, we'll see if i actually get a chance to.... ok, 90 psi on both cylinders..... and spark plugs appear to be very rich !!! I also found out the altitude at which it ran poorly, 4200ft (where it had the stumble) At sea level it ran very well, both altitudes though it hard the stall on the start feel. ~~~~ just popped into my head.... i wonder if the previous owner retarded the timing for all top end..... I know my compression is a little low but i don't think it would make it so it's about to stall.... Edited March 6, 2007 by KX4FIFSHEE Quote Link to comment Share on other sites More sharing options...
Mullet Man Posted March 6, 2007 Report Share Posted March 6, 2007 (edited) if your guage is accurate and you performed the test correctly, 90psi is way low! (stockish at sea level up to under 1000ft should pull ~120-125psi give or take a little) 14/41 gearing is stock. i doubt the previous owner retarded the timing, that would be ummm.... retarded. how did you perform the compression test? what is the jetting(main, pilot and needle clip position? how many turns on the air screw? what is your elevation? what mix of fuel/oil do you use? is it hard to start when its cold? it should be very rich going from sea level to 4200ft without retuning, this could cause a stumble. does it stumble when shifting into the next gear? your pilot jet could be clogged. Edited March 6, 2007 by Mullet Man Quote Link to comment Share on other sites More sharing options...
FireHead Posted March 6, 2007 Report Share Posted March 6, 2007 ok, 90 psi on both cylinders..... and spark plugs appear to be very rich !!! I also found out the altitude at which it ran poorly, 4200ft (where it had the stumble) At sea level it ran very well, both altitudes though it hard the stall on the start feel.~~~~ just popped into my head.... i wonder if the previous owner retarded the timing for all top end..... I know my compression is a little low but i don't think it would make it so it's about to stall.... 90 psi is really low. I would bet that's most of your problem. :thumbsup: Quote Link to comment Share on other sites More sharing options...
crbanshee Posted March 7, 2007 Report Share Posted March 7, 2007 90 psi is really low. I would bet that's most of your problem. :thumbsup: i have an 04 banshee and last trip out she did the same thing to me, slow and gutless on the start and was getting a bit boggy in the band. try pulling the carbs and cleaning the piss out of them. i had to completely take mine apart and clean the hell out of them, they were full of gunk, also think about doing a top end if its an 04 and on the stock top end it is way past time to replace it. what gas/oil ratio are you mixing at? and what kind of oil? i noticed that my shee only likes yamalube 2R any other oil it runs like complete shit. the gearing shouldnt be an issue i have ran every possiable combo and fr the type of riding i do (desert racing ands dune riding) i am super happy with a 14/44 set up. you lose a bit of top end but you gain low end and it becomes hard to keep the front end down i also advanced the timing 3 digrees with the 200w ricky stator and adjustable timing plate..but all in all it sounds like you may be in need of a top end and a good carb cleaning Quote Link to comment Share on other sites More sharing options...
350BANSHEE350 Posted March 7, 2007 Report Share Posted March 7, 2007 i dot want to tak over your thread... but im just wondering what elevation differences should you change at? EX. 3500 ft to 7000ft both at 20 degrees celcius would i have to rejet there, what jet sizes? (stock bike) sorry kx4fifshee Quote Link to comment Share on other sites More sharing options...
KX4FIFSHEE Posted March 7, 2007 Author Report Share Posted March 7, 2007 i dot want to tak over your thread... but im just wondering what elevation differences should you change at?EX. 3500 ft to 7000ft both at 20 degrees celcius would i have to rejet there, what jet sizes? (stock bike) sorry kx4fifshee no worries.... Hopefully someone has some answers for ya. Just an update... I priced out new top ends and what not and decided to go with trinity racing to do all my work. Got everything set up with them for some wisecos, boring and assembly. Came home to yank the motor and decided to test one more time. 120 psi on both cylinders.... SHIT !!! I guess my next step is to cancel with trinity ,yank the carbs and see what we have for jetting.... I was thinking of getting a new head anyway so maybe i'll just get a trinity head as well.... i dunno, but this sucks i thought for sure i had my prob figured out... now back to the beginning. Quote Link to comment Share on other sites More sharing options...
Mullet Man Posted March 7, 2007 Report Share Posted March 7, 2007 there are many better options over Trinity racing. both in price and performance! pull your carb bowl off and remove the pilot jet. check to se if it is clogged. (the wire from a bread bag tie will clean it out) i had a similar problem and sure as shit there was one tiny lil spec of dirt in there Quote Link to comment Share on other sites More sharing options...
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