Rough Jettings numbers vs. stock

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Curious George

Rough Jettings numbers vs. stock

Post by Curious George »

What has anyone found that works good for proper jetting a 200 and a 220 at 700 Ft. ? Airbox top 3/4's removed and FMF pipe , Frederette torque ring and aftermarket silencer.

Idle air screw-

Low speed Jet-

Main Jet -

Needle position-
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Indawoods
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Post by Indawoods »

Air temp? Winter air requires fatter jetting.... a 155 main and a 45 or 48 pilot should work on the 200... and clip in the middle for the needle.
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Post by Curious George »

Summer ridng , 60-70 degree day , how doe's this compare to the stock jetting ?

Has anyone found a spec chart for the stock jetting on both a 200 and a 220?
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Indawoods
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Post by Indawoods »

There is no "stock" jetting from what I can tell. It depends on the dealer and what they put on when they prep the bike. I assume they get a jet pak and use that.
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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!!! "
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Post by Curious George »

I found some stock numbers on line ,, but these may be year specific also.


A 2005 220 with 33mm carb , Pilot jet #42 , Main jet #145


A 2006 200 with 35mm carb , Pilot jet #48 , Main jet #160
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Post by KarlP »

"A 2005 220 with 33mm carb , Pilot jet #42 , Main jet #145"

That is how my '02 220 came stock.

I think I ended up 140/38 with a shiny pipe and 1/2 the airbox lid cut out.

You'll have to work on your own jetting; mine is specific to my bike, location, temp and riding style and NOT a recommendation as to what you should run

I'm not being a butt. The stock settings will run the bike, a couple of hours of carefull jetting and air screw changes will get it running nice and crisp
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Post by canyncarvr »

When Inda said 'There is no 'stock' jetting...' I believe he was referring to jetting a stock bike to a definite jet-set, NOT what 'comes with'.

The 200/220 numbers you posted are good for all 'H' model 200s and all 'A' model 220s (as far as I know, no warranties expressed or implied).

Certainly (as Inda said) a KDX could have rolled out the showroom floor with something different from OEM due to dealer changes.

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Re: Rough Jettings numbers vs. stock

Post by Mr. Wibbens »

>|<>QBB<
Curious George wrote:What has anyone found that works good for proper jetting a 200 and a 220 at 700 Ft. ? Airbox top 3/4's removed and FMF pipe , Frederette torque ring and aftermarket silencer.

Idle air screw-

Low speed Jet-

Main Jet -

Needle position-
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