carb mod for gen 2 bikes. - 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 7 Old 08-26-2014, 11:40 AM Thread Starter
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carb mod for gen 2 bikes.

Can the .22 cent mod be done on a Gen 2 bike? Or did the vacuum system on the Gen 2 bikes address the issue?

2009 KLR650
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post #2 of 7 Old 08-26-2014, 12:58 PM
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Can the .22 cent mod be done on a Gen 2 bike? Or did the vacuum system on the Gen 2 bikes address the issue?
Same same. I have an 08 and did the KLX needle.




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post #3 of 7 Old 08-26-2014, 05:43 PM
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Yep. Gen1 and gen2 have the same carburetors and the same vaccum system other than that the gen2 also has vacuum powered Air Injection System (AIS) in the exhaust system.
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post #4 of 7 Old 08-28-2014, 10:24 AM
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What advantage does the klx needle have? Funny i recently owned a klx and all the guys ditch their needle for a dyno needle
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post #5 of 7 Old 08-28-2014, 01:22 PM
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The theory is that the jet needle on the KLR650 is too fat to keep it lean for pollution purposes. The 22 cent mod mentioned by TheSnodenator uses one or two little washers under the non adjustable clip/stop top of the stock needle raising it up and enriching the mixture a little through the mid range. The washers are said to cost 22 cents and thus the name of the mod.

The KLX needle is said to have a better shape providing a little richer mixture for more power in the mid range. Also the clip at the top of the KLX needle can be adjusted up and down for more fine tuning. It is usually necessary to use a smaller main jet after changing to the richer KLX needle.
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post #6 of 7 Old 08-28-2014, 03:46 PM
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Originally Posted by GoMotor View Post
The theory is that the jet needle on the KLR650 is too fat to keep it lean for pollution purposes. The 22 cent mod mentioned by TheSnodenator uses one or two little washers under the non adjustable clip/stop top of the stock needle raising it up and enriching the mixture a little through the mid range. The washers are said to cost 22 cents and thus the name of the mod.

The KLX needle is said to have a better shape providing a little richer mixture for more power in the mid range. Also the clip at the top of the KLX needle can be adjusted up and down for more fine tuning. It is usually necessary to use a smaller main jet after changing to the richer KLX needle.
Ok thanks for explaining. I did the full jet kit on my klx(now sold) Not sure i want to do it on the KLR, its a royal PITA to do it on a klx and you end up doing it 3 times plus to get everything dialed in. The klr doesn't have the low power/lean issues the KLX does, which is why i probably wont touch it.
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post #7 of 7 Old 09-07-2014, 08:49 PM
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Just did my gf's '09 KLR about two hours ago. She loves it! She says the butt dyno can tell the difference. She has stock exhaust yet as well. I can't wait to get her an aftermarket can. The Lexx is only $200 on Amazon.
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