kdx unusual jetting question
- motofox2006
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kdx unusual jetting question
Hi guys I've been looking aroiund different forums and sites to find the jetting recommendations for my 1991 kdx200 but everywhere says you should run the bike with 155 main 48 pilot 1173n needle in middle clip.
My bike ive been running like it is for over a year now (since I bought it) and the jetting is quite different to what people recommend. I have an FMF fatty pipe with the airbox lid modified. And I run a 158 main jet, 52 pilot and a 1172n stock needle in second from top clip position. It runs fine and has plenty of go but the pilot does seem somewhat odd in comparison to what people recommend.
I ride sand that can become quite thick in some places, And im using a premix of 40:1 with fully synthetic motul oil.
Anyone have any ideas on what I should be running or if it is fine as it is.
Also any settings that could be modified like the jet needle without replacing it.
All input appreciated, thanks
My bike ive been running like it is for over a year now (since I bought it) and the jetting is quite different to what people recommend. I have an FMF fatty pipe with the airbox lid modified. And I run a 158 main jet, 52 pilot and a 1172n stock needle in second from top clip position. It runs fine and has plenty of go but the pilot does seem somewhat odd in comparison to what people recommend.
I ride sand that can become quite thick in some places, And im using a premix of 40:1 with fully synthetic motul oil.
Anyone have any ideas on what I should be running or if it is fine as it is.
Also any settings that could be modified like the jet needle without replacing it.
All input appreciated, thanks
E series 91 KDX
- 2001kdx
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- motofox2006
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- scheckaet
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Have you done a plug chop test? are you runnning rich / lean?
02 KX 200 hybrid: RB head and carb
Sold ☹ DRZ 400 SM
bike build: http://www.kdxrider.net/forums/viewtopi ... ike+stable
bike profile http://www.kdxrider.net/forums/viewtopi ... 0709#30709
newb info: http://www.kdxrider.net/forums/viewtopi ... 57#p117919
jetting guide: http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
Sold ☹ DRZ 400 SM
bike build: http://www.kdxrider.net/forums/viewtopi ... ike+stable
bike profile http://www.kdxrider.net/forums/viewtopi ... 0709#30709
newb info: http://www.kdxrider.net/forums/viewtopi ... 57#p117919
jetting guide: http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
- kdxquebec
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- motofox2006
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What temperatures are you running your bike under I run mine at temperatures between 14 degrees and 25 degrees celsius and I ride thick sand so might need a little richer jetting than usual? does this influence what you said there or do you still think the same. Thanks2001kdx wrote:Go right to 155/45, fiddle with the needle, but you will likely still be rich. I am running the same mian as you, working out great, but i have a 45 pilot in there.
you have different slide than me... that might change jetting.
E series 91 KDX
- motofox2006
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- scheckaet
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useful? yes if the jetting is WAY off but I don't believe you could tell the difference between 1 jet size unless you do a WOT testIs that even remotely useful to look at the general appearence of the plug. Thanks
02 KX 200 hybrid: RB head and carb
Sold ☹ DRZ 400 SM
bike build: http://www.kdxrider.net/forums/viewtopi ... ike+stable
bike profile http://www.kdxrider.net/forums/viewtopi ... 0709#30709
newb info: http://www.kdxrider.net/forums/viewtopi ... 57#p117919
jetting guide: http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
Sold ☹ DRZ 400 SM
bike build: http://www.kdxrider.net/forums/viewtopi ... ike+stable
bike profile http://www.kdxrider.net/forums/viewtopi ... 0709#30709
newb info: http://www.kdxrider.net/forums/viewtopi ... 57#p117919
jetting guide: http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
- Mr. Wibbens
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Stock jetting on a '91 is 150 main, 48 pilot
On my '92, I'm running a 148 main with a 40 pilot, DEK clip #3
See bike profile in my sig for the mods
I run mostly woods.
My one time riding at the Oregon Dunes (sea level) I ran a 158
On my '92, I'm running a 148 main with a 40 pilot, DEK clip #3
See bike profile in my sig for the mods
I run mostly woods.
My one time riding at the Oregon Dunes (sea level) I ran a 158
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- motofox2006
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Don't be leaning the mixture in the winter! Trying to sieze it?
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"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
- Mr. Wibbens
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If your pig rich to start with, I would not worry about it
I recently went from a 150 to a 148 and I have not seized yet
I recently went from a 150 to a 148 and I have not seized yet
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- Indawoods
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There's a 48 and a 50 between them ya know...
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****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
****'95 KDX 200/****
"People ate cows a thousand years ago for the same reason we eat them now. Cause they are easy to catch.We're not savages,we're just lazy. A cheetah could taste like chocolate heroin. But will never know. Those bastards are fast!!! "
- Mr. Wibbens
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but a 48 is stock
Besides what's the worst that can happen?
Get the RB Carb Mod, with a 4o pilot, turns the KDX into a whole different animal
Besides what's the worst that can happen?
Get the RB Carb Mod, with a 4o pilot, turns the KDX into a whole different animal
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