Wilsons Sandbox

On Fri, 01 May 2009 13:44:55 -0000 "corybaby@..." writes:

> 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

<><><><><><><> <><><><><><><> Cory, The mixture screw is for the idle mixture only. If you turn it out to richen the mixture all the time you'll be wasting fuel. If the mid range or top end is off you should fix that with a needle, needle jet or main jet adjustment. For the idle mixture screw, in is lean and out is richer. You'll hear a lot about the correct amount to turn the screw based on someone else's bike. One method to do it correctly on your bike is to start at 1 3/4 turns out. Then turn the screw out until the idle changes. Next turn it in paying attention to how many turns in you go. Be precise like use 1/8 turns or fine measurements. Turn it in until the idle smooths and then gets erratic again. Turn the screw back out splitting the difference of the amount you turned the screw in. Idle speed should be about 1,200 rpm or so. Sometimes it's helpful to do this adjustment twice. The first time gets you close for mixture and idle speed and the second time fine tunes the adjustments. Make sure the bike is warm to hot when you do this. I suggest a ride of at least 10 miles before making the adjustment. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT . ____________________________________________________________ Prices, software, charts & analysis. Click here to open your online FX trading account. http://thirdpartyoffers.juno.com/TGL2141/fc/BLSrjpTIyVjW7rZrO3uZyEzAD5eMwyImSx2r7ZgVtrUZgAzPzAxf5MEL1EM/

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@... To: "DSN KLR650" DSN_KLR650@yahoogroups.com> 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]

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 wrote: From: Jeff Khoury Subject: Re: [DSN_KLR650] fuel mixture screw To: corybaby@... Cc: "DSN KLR650" DSN_KLR650@yahoogroups.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]

That is correct. If you remove the snorkel and/or install a high-flow filter without the shim under the needle, it will run hotter and you will get popping on deceleration. -Jeff Khoury Astatic Solutions, LLC.

----- Original Message ----- From: "Rick McCauley" To: "dsn klr650" dsn_klr650@yahoogroups.com> 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@... > wrote: From: Jeff Khoury < jeff@... > Subject: Re: [DSN_KLR650] fuel mixture screw To: corybaby@... Cc: "DSN KLR650" < DSN_KLR650@yahoogroups.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]

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" dsn_klr650@yahoogroups.com> 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@... > wrote: From: Jeff Khoury < jeff@... > Subject: Re: [DSN_KLR650] fuel mixture screw To: corybaby@... Cc: "DSN KLR650" < DSN_KLR650@yahoogroups.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]

--- In DSN_KLR650@yahoogroups.com, "Jud Jones" wrote:

> > Better you should ask what K T M represents. Still hard to pronounce, but at least there is an answer. >

Used to mean "Keep the Motor" because the motor ripped while the handling sucked... times they are a changin'... da Vermonster