KLX Carb kit question - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

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post #1 of 26 Old 02-19-2019, 07:51 PM Thread Starter
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KLX Carb kit question

I notice that the handy spec sheet that Tom updated yesterday has the part numbers for the KLX needle, collar & clip.
Can anybody suggest the jet size required considering the following.
2106 KLR
Air box de-snorkled but otherwise untouched. Std air filter
Std exhaust.
Altitude Sea Level.
I have no objection to going to Eagle Mike but it is un-likely he will ship to Australia as Most U.S. businesses don't, and I should be able to get all 4 parts from the local Kawasaki dealer I assume.

I am not assuming a big increase in power rather a better mixture resulting in slightly better fuel economy & power than I currently get with the 22 cent mod.

Regards Grant
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post #2 of 26 Old 02-20-2019, 05:30 AM
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My Canadian model 2017 KLR came with a 145 main jet. I could not find a KLX kit in Canada at the time
so I ordered a KLX needle and clip and a 142 main jet from Kawasaki. I used a washer I got from a hardware store
to shim the needle. I also removed the snorkel.
I am 65 meters above sea level.

The biggest difference I noticed was better throttle response and more mid range torque and it runs a lot smoother.
It was definitely worth the small investment and time.

The fuel mileage did not change noticeably either I am burning 5.04 liters per 100km.

Terry

Last edited by terry_g; 02-20-2019 at 06:37 AM.
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post #3 of 26 Old 02-20-2019, 09:44 AM
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142 KH main, 2nd clip position (no shims under) stock pilot 2 turns out on the fuel screw

Dave
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post #4 of 26 Old 02-20-2019, 12:12 PM
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Quote:
Originally Posted by Grant S View Post
I notice that the handy spec sheet that Tom updated yesterday has the part numbers for the KLX needle, collar & clip.
Can anybody suggest the jet size required considering the following.

2106 KLR

Air box de-snorkled but otherwise untouched. Std air filter
Std exhaust.
Altitude Sea Level.
I have no objection to going to Eagle Mike but it is un-likely he will ship to Australia as Most U.S. businesses don't, and I should be able to get all 4 parts from the local Kawasaki dealer I assume.

I am not assuming a big increase in power rather a better mixture resulting in slightly better fuel economy & power than I currently get with the 22 cent mod.

Regards Grant
Are you "Back from the Future"? And they resurrected carburetion?
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pdwestman
Modify at "YOUR OWN RISK"!

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post #5 of 26 Old 02-20-2019, 12:16 PM
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When your flux capacitor breaks all you have to fall back on is the old CVK.
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post #6 of 26 Old 02-20-2019, 03:21 PM Thread Starter
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Thanks Terry & Dave might be a couple of weeks before I get the parts & fit them, but at least I can proceed with confidence that I'm not going to screw up the mixture & have it running like a pig.
Thanks Paul & Tom for the chuckle.

Regards, Grant.
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post #7 of 26 Old 02-20-2019, 05:00 PM
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Grant,

Dave's recipe is spot-on, tried and true, it will work great.

For future reference, should you make any changes, here are the instructions that Schnitz Racing provides: http://schnitzracing.com/manuals/klr-klx.pdf

Eagle Manufacturing has a similar set of instructions, but I don't know of a link to them.

Tom [email protected]

“She went out slowly. The way she did it hadn’t been learned at business college.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte


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post #8 of 26 Old 02-20-2019, 05:43 PM Thread Starter
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Thanks Tom,
no excuses for having any problems now. Hardest part will be if I have to adjust the mixture screw. Australian models have that stupid coolant line running directly below it. They don't plug the mixture screw off just put the coolant line in the way.
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post #9 of 26 Old 02-20-2019, 08:51 PM
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I can't figure out why Kawasaki thinks that the Australian models need carb heat. It would see to be something that would regularly be taken off.

Tom [email protected]

“She went out slowly. The way she did it hadn’t been learned at business college.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte


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post #10 of 26 Old 02-21-2019, 10:15 AM
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Quote:
Originally Posted by Grant S View Post
Thanks Tom,
no excuses for having any problems now. Hardest part will be if I have to adjust the mixture screw. Australian models have that stupid coolant line running directly below it. They don't plug the mixture screw off just put the coolant line in the way.
Grant S,
Even without the carb heater in place the standard fuel mixture screw is in-accessible without twisting the carb CCW for access. The starter motor is too close for any tool. That is why some owners install an extended mixture screw.

Many Australian owners apparently do eliminate the carb heater & plumbing at 1st opportunity I recon. But they don't realize that the basic plumbing can be put to Better Use!
And surely it is not too hard to drain & refill the cooling system. Skid plate removed. Drain on the Bottom of the water pump into a clean pan.
The coolant can be filtered thru a paper towel or coffee filter & re-used even.

But What do I mean by better use, you ask?

How about converting the basic plumbing into a radiator By-Pass system for quicker warm-ups from cold starts & more consistent running temps in the cooler mornings and winter months? With absolutely no detectable adverse effect on the upper temps.

All one needs to do is run the coolant hose from the cylinder head thermostat fitting down past the exhaust pipe to the water pump housing using the shortest route possible and secured away from the exhaust pipe. And eliminate all of the rest of the carb heater plumbing. Done. Sound simple enough?
This will help to bring the entire engine temp up to 160f/70c quicker & stabilize it there.

Now one could even improve upon that. If you have the tools to install larger hose barbs into the thermostat housing & water pump housing to allow the use of 1/4 inch or 5/16 inch hose.

OH, Oh, oh! Grant, does this bike still have an Un-Modified LAM throttle slide installed? Top speed of only about 100kph?

ps, This might be a good thread to duplicate over in the Australian sub-section.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting

Last edited by pdwestman; 02-21-2019 at 10:22 AM. Reason: ps, To Tom Schmitz
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