bone head klr bike drop worthy of a t shirt.

[Lee D]

For what it's worth I had conversations with SUDCO, a very good resource, over the years and here's what to expect from them; The best bit of Generally Useful "tuning intel" is the following: Pilot jet- down 1 step / 4000' higher altitude Main jet- down 1 step / 2000' " " Needle jet- drop needle 1 notch / 2000' " " This is the sum total of tuning info you can get for free. However if you buy a carb package and want one of their experts to set it up for you they will but expect to pay for it. All these are based upon stock jetting* as the reference point There's lost of variables here such as the motor and carb jetting are not 'box stock', you're then in an area where "general" guidelines aren't reliable . . *except if it's already correctly jetted for where you're at(altitude). A reminder; If you just like to sit and watch our bike Idle OR don't always run WFO then the 'Bread & Butter' tuning target is the Needle Jet System. (You can ride all day with the main jet in your pocket . . .as long as you don't go past 75% throttle. Or stated differently, changing your main has no effect on the needle system 15-75% throttle)

[Fred Hink]

All well and good except the stock KLR CVK carburetor has no adjustable needle. I wouldn t say that the main jet has no effect but a diminishing effect. The effect of the main jet is gradual and not cut off completely, except at very low throttle settings. All the different jetting circuits in a carb overlap. http://www.iwt.com.au/images/effects3.gif Fred http://www.arrowheadmotorsports.com From: Lee D Sent: Tuesday, April 16, 2013 10:09 AM To: DSN_KLR650@yahoogroups.com Subject: [DSN_KLR650] Carb tuning For what it's worth I had conversations with SUDCO, a very good resource, over the years and here's what to expect from them; The best bit of Generally Useful "tuning intel" is the following: Pilot jet- down 1 step / 4000' higher altitude Main jet- down 1 step / 2000' " " Needle jet- drop needle 1 notch / 2000' " " This is the sum total of tuning info you can get for free. However if you buy a carb package and want one of their experts to set it up for you they will but expect to pay for it. All these are based upon stock jetting* as the reference point There's lost of variables here such as the motor and carb jetting are not 'box stock', you're then in an area where "general" guidelines aren't reliable . . *except if it's already correctly jetted for where you're at(altitude). A reminder; If you just like to sit and watch our bike Idle OR don't always run WFO then the 'Bread & Butter' tuning target is the Needle Jet System. (You can ride all day with the main jet in your pocket . . .as long as you don't go past 75% throttle. Or stated differently, changing your main has no effect on the needle system 15-75% throttle) [Non-text portions of this message have been removed]

[Ron Haraseth]

Read somewhere today that the needle position (should you have a choice) gives the equivalent of one to two needle jet sizes per notch. Just like the pilot circuit where I changed the pilot jet to get the air screw adjustment as close to 1 1/2 turns (mid range) even though you could tune it to a larger pilot jet. Also interesting thread on the airheads conversion to Mikunis http://www.advrider.com/forums/showpost.php?p=18876625&postcount=8 The tuning numbers this guy (msg #8) came up with look surprisingly close to those I have found. Ron -----Original Message----- From: Fred Hink Sent: Tuesday, April 16, 2013 10:23 AM To: DSN_KLR650@yahoogroups.com ; Lee D Subject: Re: [DSN_KLR650] Carb tuning All well and good except the stock KLR CVK carburetor has no adjustable needle. I wouldn t say that the main jet has no effect but a diminishing effect. The effect of the main jet is gradual and not cut off completely, except at very low throttle settings. All the different jetting circuits in a carb overlap. http://www.iwt.com.au/images/effects3.gif Fred http://www.arrowheadmotorsports.com

[Ron Haraseth]

Read somewhere today that the needle position (should you have a choice) gives the equivalent of one to two needle jet sizes per notch. Just like the pilot circuit where I changed the pilot jet to get the air screw adjustment as close to 1 1/2 turns (mid range) even though you could tune it to a larger pilot jet. Also interesting thread on the airheads conversion to Mikunis http://www.advrider.com/forums/showpost.php?p=18876625&postcount=8 Even bigger Mikuni/BMW airhead thread: http://www.advrider.com/forums/showthread.php?t=831066 The tuning numbers this guy (msg #8) came up with look surprisingly close to those I have found. Ron -----Original Message----- From: Fred Hink Sent: Tuesday, April 16, 2013 10:23 AM To: DSN_KLR650@yahoogroups.com ; Lee D Subject: Re: [DSN_KLR650] Carb tuning All well and good except the stock KLR CVK carburetor has no adjustable needle. I wouldn t say that the main jet has no effect but a diminishing effect. The effect of the main jet is gradual and not cut off completely, except at very low throttle settings. All the different jetting circuits in a carb overlap. http://www.iwt.com.au/images/effects3.gif Fred http://www.arrowheadmotorsports.com

[RobertWichert]

This probably happened to her a lot. Robert Wichert P.Eng. LEED AP BD&C +1 916 966 9060 FAX +1 916 966 9068 ===============================================

On 4/16/2013 9:53 PM, revmaaatin wrote: > > Well, > Here in the Chromed Holy City of August it is snowing, > and since we have had a short discussion of KLR's taking a 'nap', > I thought I might continue the merriment while the snow flies. > > Tell us your napping KLR stories. > It must be worthy of winning a T-Shirt. > > I'll start. > > I usually wouldn't tell this one but only this once because it does > involve a T-shirt. > > It is mid-Sept, 2008. I had just finished the GDR while riding my 98 > KLR and companion, the KLRBugeater (still friends, smile). > > He departed to the West on I-10 towards San Diego, and I went East for > a few miles, stopping at a rest stop, dog tired. > As I made my way into a parking spot, > Almost simultaneously, up pulled a little car with family, the > passenger side on my left like it was my wingman. > I made the mistake of glancing to my right while searching for the > sidestand with my foot. > > Out of the car stepped a drop-dead gorgeous Latino woman who looked > like she had been poured into her sheer, white T-Shirt... > The kind of beauty that takes your breath away with just a glance. > > I am a rev but I ain't dead! > But really, it was just a glance. > > It just so happened, that glance happened as I was trying to put down > the kick stand... > however, as I remember it, I nearly fainted in the presence of this > awesome beauty. > I estimataed the whole incident took about... > Well, It must have been all of 4/10 sec. > > BANG. > > The overloaded pig literally jumped sideways towards the beautiful > woman. That's what happens when you forget to put the kick stand > down...did you ever do that? > Yes, my brother, I see that hand.... > > I spilled onto the pavement like a dead cat ejected from a bull dog's > mouth after shaking down an alley cat. > > What did I do? > > I did what ever gentleman would do, > I thanked her husband who had ran around the car to see if the 'old > man' was OK as he picked up my bike. > > Why did he run around the car? > He was a good man. > How do I know he was a good man? > He did what his wife told him. > > revmaaatin. who didn't win a T-shirt but he does have a memory. > > [Non-text portions of this message have been removed]

[Lee Dodge]

Ron you pose a very useful question . . for which I have no answer, however I suspect there is such a relationship. If one had access to the actual numerical dimensions or the Needle jet itself and the needles with dimensions and taper defined one could run the numbers to determine the specific annular areas and answer the question. In lieu of that work there is the Mikuni Engineering Dept where that info is readily available. In the '70's when we were doing a lot of substituting Mikuni's for Amals or the German carbs I was given a complete catalog of Mikuni carbs and tuning details-40-50 pages, I'm not sure if I can find it now. I do have a very good filing system . . .it's the retrieval system that sucks. Let's start asking questions through all of our potential sources and see if some one of us gets a "Bingo Moment", then please post it. Lee [Non-text portions of this message have been removed]