lakota jetting
Apr 30, 2002 | 01:42 AM
#1
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Trailblazer
Joined: Jul 2001
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i have removed the air box no my lakota and put a K&N clamp-on filter on, a cobra utility exaust and the K&N jet kit. i put in the 138 main jet and when i'm riding it runs great for about the first hour then it starts bogging out when you give it full throttle. i thought it was the valves at first so i took it in to have the clearence checked but after i got it back and went riding it did the same thing. i don't think i could be running rich since i've gone down in main jet sizes. does any have any ideas about this?
Apr 30, 2002 | 01:12 PM
#3
Trailblazer
Joined: Sep 2001
Posts: 79
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hello all,
Antix,
Actually, to me, it sounds as if you may be running rich. The reason I say this is that the K&N jets numbers do not correspond with the orginal jet numbers, so even if the original is #140 and you are using #138 from K&N, it may be larger than the original. I am using a #134 and I run just a tad rich, but I prefer it that way to being lean. I have a similiar set up as you but I do have the airbox. You may need to be somewhere in the middle of #134 and #138 (K&N), maybe #136. I would check th plug when it begins to bog down and see if it is black (rich)or white (lean). Good luck .
Lakota300cr
Antix,
Actually, to me, it sounds as if you may be running rich. The reason I say this is that the K&N jets numbers do not correspond with the orginal jet numbers, so even if the original is #140 and you are using #138 from K&N, it may be larger than the original. I am using a #134 and I run just a tad rich, but I prefer it that way to being lean. I have a similiar set up as you but I do have the airbox. You may need to be somewhere in the middle of #134 and #138 (K&N), maybe #136. I would check th plug when it begins to bog down and see if it is black (rich)or white (lean). Good luck .
Lakota300cr
Apr 30, 2002 | 02:07 PM
#4
Pro Rider
Joined: Sep 2001
Posts: 1,497
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Yah thats a tough one to caal, you realy have to check the plug and see whats going on.
The only reason I mention lean is the fact you say after running a hour you have power loss. Yhis may be over heating, but it is just a guess.
To clear up the jet sizes for you all, dynojets numbers identify the flow per minute were the keihin identifies the size hole it is. So clearly thier is no relation between the two indexxes of numbers.
I would say that your jetting should be quite close to dynojets projection due to they are located there in vagas.
Almost all of us have found the #134 works well with the airbox, myself I had to go with a #130 before I did the engine mods.
I wouldn't believe yours got that much more flow due to the muffler will only let so much flow go threw it. But that darn air box is unbelievably restrictive.
Nice hiering from you again 300cr.
The only reason I mention lean is the fact you say after running a hour you have power loss. Yhis may be over heating, but it is just a guess.
To clear up the jet sizes for you all, dynojets numbers identify the flow per minute were the keihin identifies the size hole it is. So clearly thier is no relation between the two indexxes of numbers.
I would say that your jetting should be quite close to dynojets projection due to they are located there in vagas.
Almost all of us have found the #134 works well with the airbox, myself I had to go with a #130 before I did the engine mods.
I wouldn't believe yours got that much more flow due to the muffler will only let so much flow go threw it. But that darn air box is unbelievably restrictive.
Nice hiering from you again 300cr.
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