grenick Posted July 17, 2014 Report Share Posted July 17, 2014 (edited) Hello everyone, I'll try to make this as short and sweet as possible. I recently bought a banshee a few months ago, It seemed to be running good but after my first long ride my top end went boom, my guess is that it was always running lean. Now I am waiting on my cylinders to get back to me but I want to make sure my jets will be on the safe side before I even go to break the engine in. So here are all my specs+ mods, I did already rejet so I just want to make sure I should be in the ballpark and safe to fire/ run the new top end. Exhaust: fmf gold series, powercore2 scilencers. Intake: stock airbox, no lid, prodesign k&n pro flow kit with outerwears pre filter. reeds: boysen carbon fibers with stupid boost bottle. Elavation: 700 to 800ft riding temps: 70- 85F oil/mix: 93 pump with amsoil interceptor 40/1 porting: no Stock carbs w tors delete. Pilot: 30 needle: middle clip mains: 280 air screw: 1.5 turns out this all sound about right? thanks a lot for your time everyone! I hope to get this damn thing back together and ride it before summer is gone. Edited July 17, 2014 by grenick Quote Link to comment Share on other sites More sharing options...
lil Doobie420 Posted July 17, 2014 Report Share Posted July 17, 2014 Yes Quote Link to comment Share on other sites More sharing options...
grenick Posted July 17, 2014 Author Report Share Posted July 17, 2014 alright sweet! I was reading through the post your jetting thread and it seemed like my main could be off and on the lean side, some guys with similar builds had 300's and 310's but we didnt have the same elavation Quote Link to comment Share on other sites More sharing options...
naoh05 Posted July 25, 2014 Report Share Posted July 25, 2014 I would go with 350-360 on the mains Sent from my iPad using Tapatalk Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted July 25, 2014 Report Share Posted July 25, 2014 I would go with 350-360 on the mains Sent from my iPad using Tapatalk Wtf! At 7-800' with no porting you do not need that huge of a main. Quote Link to comment Share on other sites More sharing options...
Nightmare Posted July 25, 2014 Report Share Posted July 25, 2014 I would go with 350-360 on the mains Sent from my iPad using Tapatalk Quote Link to comment Share on other sites More sharing options...
naoh05 Posted July 25, 2014 Report Share Posted July 25, 2014 Well based on his mods and based on if jets were at stock this was the calculation I got but he did blow it because he was lean, better safe than sorry by going rich but only a plug chock will tell Sent from my iPad using Tapatalk Quote Link to comment Share on other sites More sharing options...
Nightmare Posted July 25, 2014 Report Share Posted July 25, 2014 310 at the very most I would think. Sent from my XT1080 using Tapatalk Quote Link to comment Share on other sites More sharing options...
bluebanshee98 Posted July 26, 2014 Report Share Posted July 26, 2014 Wtf! At 7-800' with no porting you do not need that huge of a main.This! 280 main should be fine. If you need a bigger main for that temp you more then likely you have a air leak and could be caused by that boost bottle. You should do a leak down test on the motor Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted July 26, 2014 Report Share Posted July 26, 2014 Should ave done a leak test before it was torn down too. Ditch that fukkin boost bottle Quote Link to comment Share on other sites More sharing options...
naoh05 Posted July 26, 2014 Report Share Posted July 26, 2014 well i based my calculations based off if he was at 200 mains, 25 pilot... and use the adjustments from http://www.dfn.com/agservices/jetfaq.html and the jetting toolkit from CarvedArt, maybe i did something wrong but who knows Quote Link to comment Share on other sites More sharing options...
oldskool Posted July 26, 2014 Report Share Posted July 26, 2014 I believe you are right on with pilot and main. I doubt it, but you might need a needle adjustment Quote Link to comment Share on other sites More sharing options...
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