Alex_o345 Posted July 23, 2013 Report Share Posted July 23, 2013 Hey guys, I'm new to Banshee HQ but have learnt lots so far from this site but haven't found someone in my situation yet. I have an 01 shee with FMF Fattys, K&N Air Filter with no Airbox lid and thats about it everything else is stock as far as I know. So from what I've heard from this site is that i should be running 260-280 mains but after playing with it for a bit I found it ran the best with 190s in it and when i check the plugs there a nice chocolate brown and looks a bit on the richer side to me. With the mods I have i havent heard of anyone running 190s but can this be right? I've had the bike for 3 years and its running the best its ever ran. A little bog on the bottom end but i ordered 27.5 pilots and I think that will fix that right up. (Air screw is turned out 2 turns -- If I turn it in all the way it eliminates the bottom end bog but I lose all my top end power) I just want to know what you guys think?? Quote Link to comment Share on other sites More sharing options...
boyzee81 Posted July 24, 2013 Report Share Posted July 24, 2013 does your motor rev real high- even for a banshee? I have had to do alot of research on jetting when i started to mod my stock bike- i know stock are 200 mains (190 and up to 210 or 220 are supplied from the dealers depending on altitude/temp of location of where your shee was sold new) needle jet on middle clip of 5 and 25 pilot.. jetting is ruled by your mods, altitude and temp. there is no 'i have fattys so need 270s, or i have toomeys so need 280s' rule to go by. since you say you have 190s in a bike with k&n no lid and fattys you must be way too lean unless your way up above the clouds or on Mars!! my advice would be to post your altitude and temperature and dont ride her until some of the guys who are far more knowledgable than me on here speak up! i know you've had the bike for 3 yrs but a lean condition will FUCK your motor- maybe not imediately but it WILL! search the site and be prepared to read up- it'l save you $$$$$$s do a plug chop also on fresh spark plugs AFTER you get more advice- but need altitude and temp Quote Link to comment Share on other sites More sharing options...
hoppedupandcutdown Posted July 24, 2013 Report Share Posted July 24, 2013 Is it possible those 190's have been drilled out? That just don't seem right. Quote Link to comment Share on other sites More sharing options...
Alex_o345 Posted July 25, 2013 Author Report Share Posted July 25, 2013 I'm 350m above sea level and temps 65-85. ( FMF Fattys, K&N, No Lid and TORS eliminated --everything else stock) If anyone has a good ballpark of where i should be at with my jetting that would be great. I took it out yesterday and it wasn't running like it was the other day. I'm not sure if i have bad gas or maybe just dirty airfilter but i'm going to clean everything up and try again. I need to completely rejet it I think i've tried putting 260s in and it runs like shit wont even hit powerband. Any suggestions would be great. ps. when i had it running good i had 190's, needle in last clip position closest to blunt end and air screw 2 turns out ---I know i'm leaning it right out but it always seems like its rich - Plugs were a darker brown when it was running good turned black yesterday was I was fucking around with the jetting. Quote Link to comment Share on other sites More sharing options...
LCW Posted July 25, 2013 Report Share Posted July 25, 2013 I have a bike up here at 2200 feet with nearly the same mods. I has the large K&N single no lid, FMFs, decked head, and some mild porting. It is at 320 mains, 27.5 pilots. It's pretty close to where it should be. Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted July 26, 2013 Report Share Posted July 26, 2013 My old stock motor with the exact same mods was running 290 mains, 27.5 pilots, needle middle clip, 1.5 turns on the idle/air screw.... The jetting was spot on... 190 seems excessively lean to the point of a meltdown... I would rejet and do a few wide open pull plug chops... Quote Link to comment Share on other sites More sharing options...
Alex_o345 Posted July 26, 2013 Author Report Share Posted July 26, 2013 Perfect thanks guys, I'm going outa town this weekend but as soon as i get the chance i'll rejet and do a plug chop and see how it is. I'll post pictures next week. Quote Link to comment Share on other sites More sharing options...
J-Madd Posted July 26, 2013 Report Share Posted July 26, 2013 I don't see how it hasn't melted down, or tried to catch on fire with 190 mains in there. Quote Link to comment Share on other sites More sharing options...
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