3lue by u Posted January 25, 2010 Report Posted January 25, 2010 (edited) Ok I put on the FMF Gnarlys and K&N and changed the jets to some 280s and needle on third clip and air mixture screws 2 turns out. I had them 1.5 turns out and it seemed to hesitate when I nailed the throttle so I turned it out the extra half of a turn. I was out riding on saturday and it ran decent but was popping an snapping from time to time. Granted it was warmer than when I jetted for so I probably need to rejet down to ? I have 210s that were on it and some 270's and the three that came in the jet kit I got raped on. I think it is like 190 280 and 340. I plan on getting every jet imaginable. Well all that are needed anyway. Edited January 25, 2010 by 3lue by u Quote
GrMeyer Posted January 26, 2010 Report Posted January 26, 2010 Are you running the air box? Lid? Snorkel? Mods in lid? Porting? Elevation? Temp? remember that clockwise; which is richer on the air mix screw. Also read up on this. http://www.dfn.com/benkaren/jetfaq.html Quote
SAVAGE420 Posted January 26, 2010 Report Posted January 26, 2010 Your lean as all hell. Atleast on the top. Get on that before you melt the pistons. Read the link posted and also do a Proper plug chop after you richen it up. Always start rich and work your way down. If you cant do it by feel or experience, well then do this too the "T" and don't miss or mess with any of the steps. http://www.dfn.com/benkaren/plugchop.html Quote
GNR101 Posted January 26, 2010 Report Posted January 26, 2010 lol ... some1 needs to get a better pic on that page... Quote
3lue by u Posted January 29, 2010 Author Report Posted January 29, 2010 Airbox no lid and I think I am like 1100 ft and it was around 40-45. Dont think it is ported. I am looking for a wide open field to do the plug chop. So you think that 280 is lean? Quote
fastbanshee8 Posted January 29, 2010 Report Posted January 29, 2010 FMF's like a richer pilot jet, than most pipes. Get some 27.5 pilots, and put them in. Quote
GrMeyer Posted January 30, 2010 Report Posted January 30, 2010 With that temp, you should be in the 300's for the main. Quote
RadarRacing Posted January 30, 2010 Report Posted January 30, 2010 I've seen 310s be lean and a few that liked 350s with pod filters. Popping or backfiring is lean,not a little or slightly lean. That would be burndown lean. Quote
3lue by u Posted February 1, 2010 Author Report Posted February 1, 2010 Where is a good place to get jets? jetsrus.com? or ebay. Also do I want Genuine Mikuni or OEM style? or does it matter? I know I will never buy a Moose racing jet kit again after seeing the prices on jetsrus. what range is good to get I was thinking from 190-360. Quote
shanYE west Posted February 1, 2010 Report Posted February 1, 2010 on stock porting with pods I usually end up around 290 on the mains with 27.5 pilots.. BUT.. thats in 75 degree weather.. in 40-45 degree weather.. your Definitely lean.. I'd throw a 310 in there and jump the pilot one size.. maybe 2. Quote
AKheathen Posted February 2, 2010 Report Posted February 2, 2010 there is a "jet kit" on ebay for 30 bucks...it has every size from 210-390.... Quote
3lue by u Posted February 2, 2010 Author Report Posted February 2, 2010 I have searched all over ebay and all I can find are the over priced moose kit that I already have. That is what I am looking for though just need the jets from like 210 to 390 Quote
AKheathen Posted February 2, 2010 Report Posted February 2, 2010 damn, i guess he's not listing them right now......mabey you can contact him......here is the guy.... jet kit guy Quote
Cali Posted February 7, 2010 Report Posted February 7, 2010 Try your Yamaha dealer.Mine has them in stock.Cost me about 2 bucks a jet.. Quote
GrMeyer Posted February 7, 2010 Report Posted February 7, 2010 Try your Yamaha dealer.Mine has them in stock.Cost me about 2 bucks a jet.. You got lucky!!! Quote
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