Wilsons Sandbox

Excellent report / finding. All that you have mentioned is proper. GOOD ADVICE . and Like Jeff was saying about altitude. I have noticed my KLR is very sensitive. when I ride a long distance 800+ mile trips. I can feel the change in performance as I pass variable altitudes. So, Rule of thumb. Not the rules, just a guide line, experiment for what works best for your riding location/style. I didnt like the KLX needle, power wan't were I wanted it. I am happy with Stage II kit from Dynojet. -Mike- ----- Forwarded Message ---- From: Jeff Khoury To: ramachm12@... Cc: dsn klr650 dsn_klr650@yahoogroups.com> Sent: Friday, May 1, 2009 8:59:17 AM Subject: Re: [DSN_KLR650] fuel mixture screw Just as a primer to those messing with jetting, here are the results of my learnin' based on spending a lot of time tuning my old Seca II. I learned this the hard way, and it's even harder because you have to do everything x4. These are some general tuning tips I've learned by trial-and-error. * Any time you do anything to increase flow of air or exhaust, you need to richen everything. The opposite is true of restriction. -From idle to 1/8 throttle or so: Pilot (Idle mixture) screw -from 1/8 to about 2/3 throttle: needle -2/3 and up: mains These areas overlap, but this is a good rule-of-thumb *watch out for altitude. If you tune at sea level, then go up a few thousand feet, behaviour could be different. *If you get popping on deceleration (with throttle closed) most likely you are too lean, but you could also have an exhaust leak or air injection problem if your bike is so equipped. This could also be an indication that your pilot jets are becoming clogged if you have made no adjustments, especially if the bike has sat for a while. *If the bike runs well cold, then develops a hesitation when it warms up, you're too rich. *If it runs well warm, but is cold-blooded and you have to choke the crap out of it, you're too lean. *If you install a needle with an aggressive taper, like the KLX needle, and you have stock exhaust, you may have to go DOWN a jet size or two. *if it hesitates coming off idle when warm, lean up the pilot circuit a hair. *If it does the same at 1/4 throttle or so, lower the needle a notch. *If you rejet and actually lose top end, but gain accelleration, the main is probably too rich. (you'll hear a distinct change in tone if you're too rich. ) All of these changes affect the others, so unless you're an expert, you'll have to keep tweaking until you hit that magical driveability balance... where it's smooth throughout the whole range. Remember. In carburetors, RPM is not important... it is about throttle position. I'll add more as I think of them. -Jeff Khoury

----- Original Message ----- From: "Rick McCauley" To: "dsn klr650" Sent: Friday, May 1, 2009 8:39:28 AM GMT -08:00 US/Canada Pacific Subject: Re: [DSN_KLR650] fuel mixture screw The KLR is lean to start with. I am assuming that it is not a good idea to remove the snorkel unless you make other mods, like raising the needle. Correct? Rick (swamp dweller) A17 --- On Fri, 5/1/09, Jeff Khoury < jeff@astatic. net > wrote: From: Jeff Khoury < jeff@astatic. net > Subject: Re: [DSN_KLR650] fuel mixture screw To: corybaby@sbcglobal. net Cc: "DSN KLR650" < DSN_KLR650@yahoogro ups.com > Date: Friday, May 1, 2009, 10:30 AM I have an '09, so it should be identical. I have gotten good results with the following: I have the stock exhaust, and have removed the snorkel from the airbox. I drilled the slide and adjusted the pilot (idle mixture screws) per instructions from the DynoJet kit, you can get a pdf from their website. I then placed a shim (#4 brass washer) under the needle clip to richen the midrange a bit. Throttle response is improved as well as cold start and idle. YMMV. I don't know about increased horespower, but it feels "snappier" Some people install the needle out of a KLX to make it more agressive. -Jeff Khoury ----- Original Message ----- From: corybaby@sbcglobal. net To: "DSN KLR650" Sent: Friday, May 1, 2009 6:44:55 AM GMT -08:00 US/Canada Pacific Subject: [DSN_KLR650] fuel mixture screw So ive done alot of research on techniques for richening up the 08 klr, some say to turn the mix screw (bottom of carb behind plug)all the way in and then out 3/4 turn....some say turn it out 2 1/2 - 3-1/2 turns out...which is it? 2 1/2 was stock on my bike.......which way is richer and leaner thanks in advance 08 klr e2 pipe ,grommet from airbox removed,(marknet) no other engine mods cory [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]