MFIC Posted May 15, 2006 Report Share Posted May 15, 2006 (edited) Hello im new to the site. I bought a new 05 banshee about a month ago. I need a little help with jetting. Thanks for any feedback this is a great site with lots of info. these are the mods. Paul Tuner midrang pipes Dual K&N no airbox V-force 3 reeds and spacer No TORS el. 4000-5000' Reno NV or sand mountain From what i have researched i come up with. 320-350 main needle in the #2 slot 30 pilot air screw 1.5 out ?? Edited May 15, 2006 by MFIC Quote Link to comment Share on other sites More sharing options...
dajogejr Posted May 15, 2006 Report Share Posted May 15, 2006 I would say you've done your research quite well. I'd start with the 350 main, only because of your elevation...and it would not shock me to see it ending up with a 360 or so...simply because "your high".... I think 27.5 pilot should be fine, and it'll be middle or 4th clip on the needle if anything. I know VForce says to lean it a clip...but, with your elevation...you need to compensate by richening it. I'd say start in the middle.... Other than that...good research!! Quote Link to comment Share on other sites More sharing options...
MFIC Posted May 16, 2006 Author Report Share Posted May 16, 2006 (edited) thanks for the help. I"ll set it up as follows and do a plug check. 360 main #4 slot needle 27.5 pilot Edited May 16, 2006 by MFIC Quote Link to comment Share on other sites More sharing options...
Hilarious Posted May 17, 2006 Report Share Posted May 17, 2006 (edited) I would say you've done your research quite well.I'd start with the 350 main, only because of your elevation...and it would not shock me to see it ending up with a 360 or so...simply because "your high".... I think 27.5 pilot should be fine, and it'll be middle or 4th clip on the needle if anything. I know VForce says to lean it a clip...but, with your elevation...you need to compensate by richening it. I'd say start in the middle.... Other than that...good research!! 516265[/snapback] Dont you lean your jetting as you rise in elevation, above sea level? Edited May 17, 2006 by Hilarious Quote Link to comment Share on other sites More sharing options...
dajogejr Posted May 17, 2006 Report Share Posted May 17, 2006 Nope. Air is thinner up there...therefore it flows easier, and more fuel (richer jets) must be used to compensate for it... Quote Link to comment Share on other sites More sharing options...
Hilarious Posted May 17, 2006 Report Share Posted May 17, 2006 (edited) Well I must have interpereted the jetting FAQ wrong. I thought it was less air as you rise in elevation so less fuel is needed. .Edit: this is what I got from BenBB's jetting article..... Q#15:Why do elevation changes affect my jetting?A#15:In the same way air temperature changes the density of oxygen in a given air volume, so do elevation changes. As the elevation above sea level (0') increases, there is less oxygen per volume of air (lower density). Typically you'll need to rejet your mains one size for every 1500'-2000' elevation difference; jet smaller when going to a higher elevation and jet larger for going to a lower elevation (for example: 300 mains at 3000', 320 mains for 0' or sea level IF the temp is the same). Bear in mind that you'll need to compensate for BOTH temperature AND elevation changes, so going from a hot low elevation to a cold high elevation may net no jetting change. Much like temp changes, going from a low elevation to a higher one of the same temp will exhibit a bog at WOT because it's rich (dial in the mains-see Q#12); going from a high elevation to a lower one may or may not give you any symptoms of being lean before damage occurs. While there are other atmospheric factors that can affect jetting (like humidity, barometric pressure, etc.), temperature and elevation changes will have the most drastic affect. Edited May 17, 2006 by Hilarious Quote Link to comment Share on other sites More sharing options...
dajogejr Posted May 17, 2006 Report Share Posted May 17, 2006 Your right, me wrong. I always thought thinner air required more fuel to compensate...my bad. I re-read sredish's jetting FAQ...and his word is gold as far as I'm concerned... To be honest, I've only rode in MI...less than 1000 feet pretty much anywhere you go, so...I've never had to compensate for elevation, only temps... Thanks for pointing that out...! Quote Link to comment Share on other sites More sharing options...
Hilarious Posted May 17, 2006 Report Share Posted May 17, 2006 Your right, me wrong. I always thought thinner air required more fuel to compensate...my bad. I re-read sredish's jetting FAQ...and his word is gold as far as I'm concerned... To be honest, I've only rode in MI...less than 1000 feet pretty much anywhere you go, so...I've never had to compensate for elevation, only temps... Thanks for pointing that out...! 516885[/snapback] Im not tring to rite anyone, sometimes another pair of eyes is really good to look at something and a different point of view. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted May 17, 2006 Report Share Posted May 17, 2006 My logic was 100% backwards... Think about mile high stadium, Denver...less air, (thinner air) so players get tired easier... Less O2, less fuel needed. Now that I actually thought about it for more than a minute, makes perfect sense.. I'll just go back to my little hole over here now...and shut my trap... Seriously, you're dead on...and I'm not afraid to admit when I'm wrong... Quote Link to comment Share on other sites More sharing options...
Hilarious Posted May 17, 2006 Report Share Posted May 17, 2006 (edited) My logic was 100% backwards... Think about mile high stadium, Denver...less air, (thinner air) so players get tired easier... Less O2, less fuel needed. Now that I actually thought about it for more than a minute, makes perfect sense.. I'll just go back to my little hole over here now...and shut my trap... Seriously, you're dead on...and I'm not afraid to admit when I'm wrong... 516897[/snapback] Dont leave yet. Sorry to jack this thread, MFIC. Dajogjr, how do you like your cub set up that you got from Jeffrey? BenBB Jetting FAQ MFIC click that link. Edited May 17, 2006 by Hilarious Quote Link to comment Share on other sites More sharing options...
dajogejr Posted May 17, 2006 Report Share Posted May 17, 2006 Yeah, sorry to carry on too!! Had some initial problems, ones I couldn't solve wiithout the help of a machine shop. I just got it done last Friday, and I only got to go for a quick rip down the road. All I can say is...WOW. Going from a 45 HP see to 85 is huge...big time. It's been raining cats and dogs here for like 7 or 8 days straight...really bumming me out. Leaving tomorrow for a LONG weekend in the UP of MI with about 20 guys going. To say I won't be able to sleep tonight or tomorrow would be an understatement..!! I'll give a full report back after a long weekend and quite a few miles...stay tuned. Quote Link to comment Share on other sites More sharing options...
Hilarious Posted May 17, 2006 Report Share Posted May 17, 2006 Thats exciting man. I got Jeff doin some work for me, no cub tho. And Im excited to get my bike put back together and see how much more of a beast its gonna be. Quote Link to comment Share on other sites More sharing options...
ojcool Posted May 17, 2006 Report Share Posted May 17, 2006 Your right, me wrong. I always thought thinner air required more fuel to compensate...my bad. I re-read sredish's jetting FAQ...and his word is gold as far as I'm concerned... To be honest, I've only rode in MI...less than 1000 feet pretty much anywhere you go, so...I've never had to compensate for elevation, only temps... Thanks for pointing that out...! 516885[/snapback] Hmm maybe you should not be giving advise. Make sure what you post is accurate information. One article isn't enough research to be advising people anyway. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted May 21, 2006 Report Share Posted May 21, 2006 (edited) Hmm maybe you should not be giving advise. Make sure what you post is accurate information. One article isn't enough research to be advising people anyway. 517278[/snapback] Hey...slick, I didn't realize you were 100% perfect. I retracted my statement, and apologized for wrongly correcting him. Hilarious didn't seem to have a problem with it...and neither did the original poster. Maybe instead of opening your trap, you could actually contribute to this thread... If you noticed, once I corrected myself after Hilarious pointed it out... it was correct information. One article is not enough research to solve anything, however...it is a great place to START and go from on a baseline. No two machines are the same...period. However, there are safe starting points, which...is what this poster was looking for. After searching for and reading a few of your posts...you are definitely no one to judge another... You can't even jet your own shit with basic, basic mods, and your worried about wasting a 2.00 plug for a chop when it costs about 75 times that for a new top end... Contribute something or go somewhere else...smart guy.... Edited May 21, 2006 by dajogejr Quote Link to comment Share on other sites More sharing options...
cdwood37 Posted May 22, 2006 Report Share Posted May 22, 2006 I am at 5000 feet and with k&N filters t-6 pipes and vforce reeds I was at a 250 main and it could have probably been a 240 but i would start at a 290 and work down Quote Link to comment Share on other sites More sharing options...
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