klr650 fender

[Brad Davis]

I want to enrichen my high speed mixture so that I can run regular fuel with no pinging at high speeds (3000 to 4000 rpm). I use midgrade now and I get pinging when I accelarate heavily in a high high gear. For example, if I am going 50mph and want to zoom up to 65mph in 5th gear, it pings. I want everything else to remain stock, the airbox, exhaust, everything. My manual says that the stock Main Jet is #138 (I think I remember that correctly). My question is this, can I increase the jet size to the next largest (which is a #140 on buykawasaki.com) with out messing around with anything else? Or am I better to not mess with it and buy premium fuel? Bike Stats: 95 KLR650, 10000 miles, 15t front sprocket, stock everything, usually gets 58 to 60 mpg, doesn't run hot, spark plug doesn't show signs of a lean mixture as far as I can tell. Thanks! Brad Davis Raleigh __________________________________________________ Do You Yahoo!? Try FREE Yahoo! Mail - the world's greatest free email! http://mail.yahoo.com/

[Ted Palmer]

Brad Davis wrote: [main jet]

> My question is this, can I increase the jet size to > the next largest (which is a #140 on buykawasaki.com) > with out messing around with anything else? Or am I > better to not mess with it and buy premium fuel?

My KLR650A1-9 supplement specs the main jet at #148 for US models. A1 and A2 non-US and non-Germany got #150, except for the Swiss who managed #155 somehow. You have some latitude, apparently. Pilots jets were all #40. If you are at altitude then things change a bit, but then again you would think that Swiss models might have a slightly smaller MJ, it's not like Switzerland is real flat. There are some variations in the jet needle could have just as much affect at midrange rpms, in which case trying out a KLX650 adjustable needle may be more productive. Mister_T Melbourne Australia

[bradcdavis]

--- In DSN_klr650@y..., Ted Palmer wrote:

> My KLR650A1-9 supplement specs the main jet at #148 for US models. > A1 and A2 non-US and non-Germany got #150, except for the Swiss who > managed #155 somehow. You have some latitude, apparently. > Pilots jets were all #40. > If you are at altitude then things change a bit, but then again > you would think that Swiss models might have a slightly smaller > MJ, it's not like Switzerland is real flat. > > There are some variations in the jet needle could have just as much > affect at midrange rpms, in which case trying out a KLX650

adjustable

> needle may be more productive. > > Mister_T > Melbourne Australia

Yep, you are right about the #148 being standard. I guess I could try the #150 for awhile and then move to the #152 if I needed to. Has anyone else only changed the main jet ot control pinging? BTW, I am in NC, USA. Altitude about 600 feet. Brad

[marshall]

Ted, The adjustable needle for the KLX you refer to, is this the needle under the slide/diaphragm assy? I had my needle out the other day while installing a new diaphragm and didn't notice any adjustment. Can you elaborate for those of us that are carburatorilly challenged? Sorry for all the questions, just don't know that much about carbs. Thanks for all the info, Marshall in Slidell, La 95 KLXC3 "Blackhorse" (in honor of those who served)

----- Original Message ----- From: "Ted Palmer" To: DSN_klr650@yahoogroups.com> Sent: Tuesday, March 12, 2002 5:21 AM Subject: Re: [DSN_klr650] Carb 101 - changing main jets > > There are some variations in the jet needle could have just as much > affect at midrange rpms, in which case trying out a KLX650 adjustable > needle may be more productive. > > Mister_T > Melbourne Australia >

[Devon Jarvis]

The KLX needle has a much different taper than the stock needle, in addition to having multiple clip seats. It will richen the midrange mixture considerably- the Brooklyn Bum has had issues with fuel economy after fitting the KLX needle and opening the idle fuel screw. I think (and I think this from monkeying with needle jets/needles on Mikuni roundslides) that if you get a KLX needle, you should get the KLX needle jet as well. This might restore decent fuel economy but keep the adjustability and better midrange mixture. I have been told by people with a lot more tuning experience, that you should go down on the needle jet until the bike doesn't run as well, then go up one. It affects fuel economy more than it affects performance, by some bit of physics that I haven't wrapped my head around. Devon A15 marshall wrote:

> > Ted, > > The adjustable needle for the KLX you refer to, is this the needle under the > slide/diaphragm assy? I had my needle out the other day while installing a > new diaphragm and didn't notice any adjustment. Can you elaborate for those > of us that are carburatorilly challenged? Sorry for all the questions, > just don't know that much about carbs. > > Thanks for all the info, > > Marshall in Slidell, La > 95 KLXC3 "Blackhorse" (in honor of those who served) > ----- Original Message ----- > From: "Ted Palmer" > To: DSN_klr650@yahoogroups.com> > Sent: Tuesday, March 12, 2002 5:21 AM > Subject: Re: [DSN_klr650] Carb 101 - changing main jets > > > > > There are some variations in the jet needle could have just as much > > affect at midrange rpms, in which case trying out a KLX650 adjustable > > needle may be more productive. > > > > Mister_T > > Melbourne Australia > >

[zootpatutie]

If you haven't backed the pilot screw out yet, you may find it to be a no cost modification that changes performance for you. Todd A9

[Ted Palmer]

marshall wrote:

> The adjustable needle for the KLX you refer to, is this the needle under the > slide/diaphragm assy?

Yes.

> I had my needle out the other day while installing a > new diaphragm and didn't notice any adjustment. Can you elaborate for those > of us that are carburatorilly challenged? Sorry for all the questions, > just don't know that much about carbs.

The competition spec KLX650A (aka "KLX650R" apparently uses an adjustable needle, although the diagrams in the manual do not make it obvious. Page 2-4 shows that the standard needle clip position 3rd groove from the top, and for US market it was 1st groove from the top. The road-registerable KLX650C used a typical fixed-position needle to keep the eco-fascists feeling important. Mister_T Melbourne Australia

[TLrydr@aol.com]

In a message dated 3/13/02 8:13:30 AM EST, tedp@... writes: << The competition spec KLX650A (aka "KLX650R" apparently uses an adjustable needle, although the diagrams in the manual do not make it obvious. >> I wonder what size needle holder the KLX650R has in it?? Does the book say,

[fred w smith]

--- marshall wrote:

> Ted, >. Can > you elaborate for those > of us that are carburatorilly challenged? Sorry > for all the questions, > just don't know that much about carbs.

Marshall, Just breath deep and stay calm, you are doing well, in fact you are way ahead of most of us carburetophobes. Most of us avoid even looking at a carburetor closely, so you are to be congratulated on your progress. Have you thought about creating a 12 step program around your experiences? Step 1: Accept that a higher power exists, a power who placed all them dinosaurs in them swamps long ago. Step 2: As the dinosaurs in the swamps became oil under the desert...well you get the idea. Good luck keeping float adjusted. Adios, fred (all this talk about needles is making me queazzy...)

> Checkout Dual Sport News at > http://www.dualsportnews.com > Be part of the Adventure! > > Visit the KLR650 archives at > http://www.listquest.com/lq/search.html?ln=klr650 > > Post message: DSN_klr650@yahoogroups.com > Subscribe: DSN_klr650-subscribe@yahoogroups.com > Unsubscribe: DSN_klr650-unsubscribe@yahoogroups.com > > List owner: DSN_klr650-owner@yahoogroups.com > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > >

===== fred w smith, - It's not an optical illusion, it just looks that way. __________________________________________________ Do You Yahoo!? Try FREE Yahoo! Mail - the world's greatest free email! http://mail.yahoo.com/

[marshall]

Fred, I was truly surprised at how simple the carb turned out to be. I do have the factory service manual and looked it over BEFORE (for a change) I took the carb apart. I carefully removed the slide assy., and placed the needle and plastic cap on the side. Found the washer in the recess of the cap. I tried the washer under the needle, easier starting when cold, but way too rich. I did end up replacing the vacuum diaphragm, the black rtv did not hold. I got really lucky, there is an independent HD custom shop here that sold me a clean used diaphragm for less than $10.00 . KAW wanted over $100.00 for the assy. I'm slowly learning. Thanks for the kind words. Marshall in Slidell, La still carburatorilly challenged

----- Original Message ----- From: "fred w smith" To: "marshall" ; DSN_klr650@yahoogroups.com> Sent: Wednesday, March 13, 2002 9:02 AM Subject: Re: [DSN_klr650] Carb 101 - changing main jets > > --- marshall wrote: > > Ted, > >. Can > > you elaborate for those > > of us that are carburatorilly challenged? Sorry > > for all the questions, > > just don't know that much about carbs. > > Marshall, Just breath deep and stay calm, you are > doing well, in fact you are way ahead of most of us > carburetophobes. Most of us avoid even looking at a > carburetor closely, so you are to be congratulated on > your progress. > Have you thought about creating a 12 step program > around your experiences? Step 1: Accept that a higher > power exists, a power who placed all them dinosaurs in > them swamps long ago. Step 2: As the dinosaurs in > the swamps became oil under the desert...well you get > the idea. Good luck keeping float adjusted. > Adios, fred (all this talk about needles is making me > queazzy...) > > Checkout Dual Sport News at > > http://www.dualsportnews.com > > Be part of the Adventure! > > > > Visit the KLR650 archives at > > http://www.listquest.com/lq/search.html?ln=klr650 > > > > Post message: DSN_klr650@yahoogroups.com > > Subscribe: DSN_klr650-subscribe@yahoogroups.com > > Unsubscribe: DSN_klr650-unsubscribe@yahoogroups.com > > > > List owner: DSN_klr650-owner@yahoogroups.com > > > > Your use of Yahoo! Groups is subject to > > http://docs.yahoo.com/info/terms/ > > > > > > > ===== > fred w smith, > > - It's not an optical illusion, it just looks that way. > > __________________________________________________ > Do You Yahoo!? > Try FREE Yahoo! Mail - the world's greatest free email! > http://mail.yahoo.com/