118 replies to this topic

[juliend TT Titanium Member]

We ride down at Brushy quite a bit. I assume that's where you'd be riding in Taylorsville. Must be nice to be close by there. It takes me about 1.5 hours to get down there. Due to the travel time, many times I just jet out to Mountain City and ride the trails at Callalantee.

I don't have any smaller pilot jets on hand. 45 is the smallest I got. I may order a few extra's.

[branhine TT Newbie]

Believe it or not I haven't been to Brushy yet.  I have a buddy w/ about 90 acres that butts right up against Brushy to the east side.  Longest loop is about 13 miles with several smaller ones to chose from as well.  The Kawasaki dealer down here right off 321 across the bridge has a few 42's in stock if you want to take the time to drive down (its raining so what else is there to do : )  ).

If you do drive down let me know and I'll come out and meet up, talk bikes and have a beer.

[juliend TT Titanium Member]

Sounds great! I'm parked until April unfortunately. I was hoping to get out this weekend but it doesn't appear that the rain is going to let up. I'm traveling with my daughter all through March for dance competitions. I think there's one weekend in march when she's not competing, perhaps that will give me a chance to get the old bike out for a while.

J.

[firffighter TT Silver Member]

'02 220

sea level-3500'

stock gearing
stock exhaust (also run FMF woods)
airlid removed
Twin air filter
Weisco piston

JD jet kit:
-red needle (4th clip)
-155 main
-40 pilot
-AS 1 1/2

Runs great.  Very toquey for nasty NW woods.

[hi_im_sean Get Help Now]

juliend said:

Sounds great! I'm parked until April unfortunately. I was hoping to get out this weekend but it doesn't appear that the rain is going to let up. I'm traveling with my daughter all through March for dance competitions. I think there's one weekend in march when she's not competing, perhaps that will give me a chance to get the old bike out for a while.

J.

this is a jetting thread please go PM

[Curious George TT Newbie]

2005 Brand-New KDX220 , yes it's 10/21/09 and it came from a Kawasaki Auction.

700 ft.  +/-
modified air box lid - rear 2/3rd's removed
stock 33 mm carb
FMF desert / rev pipe
FMF Turbine core 2 silencer
FRP torque ring
13/50 gearing


Night and Day over stock , ran lousy with stock pipe and silencer.
Amazed at how much free'er it runs now and has affected the jetting alot.

I've got a 35 mm 200 carb with 607 reeds that I'm bolting on tomorrow.
I'll start with a 158 /42 and go from there.

I've got a new Wiseco piston to put in and with have the head modified for more compression at the same time ,, and clean up the stock porting.

[Curious George TT Newbie]

158 /42 was too rich and ragged , changed the main to 155 and it's alot better.

The bottom end is still not as smooth as I'd like , will try a 40 slow jet.

A mid throttle this bike has some awesome power compared to the stock 33 mm carb. It will easily pull the front end in 3rd out of a corner.

It's not coughing at low end , it feels like it's gurgling.

[rlw TT Bronze Member]

Jetting UPDATE (bold) on our KDX200

rlw said:

2005 KDX200
Idaho: Typically ridden 3000ft - 8000ft, 50F - 95F.....normally fairly low humidity
Mods: Removed airbox lid _ Twin-Air filter _ Stealthy 10oz Flywheel weight _ Kouba KDX2 Links (lowered +/-1.5")
Gearing: 12/47 (considering 12/49 for mtn trails, then 13/49 for high desert)
Main Jet: 152 (from 155, Stock 160)
Pilot Jet: 42 (from 45 _ Stock 48).....may drop to 40

Needle: 1173, clip 2nd position down (Stock at 3) (maybe back to 3)
Air Screw: just adjust as needed, but currently 1.75 out
Pre-Mix: Golden Spectro Semi-Syn 48:1 w/91oct

[spartan55 TT Newbie]

Hey, gathered losts of info from this thread but still can't figure out what to do. I just purchased a mint condition 2001 kdx 200 all stock except for airbox lid (no snorkel) and a pro circuit platinum I pipe (the original). I ride at 0-1000ft and 0-35 celcius. I'm running from what i understand is stock jetting  at the moment and it is very rich, and alot of spooge. What would you think is the best jetting for me? anybody got any input?

[hi_im_sean Get Help Now]

spartan55 said:

Hey, gathered losts of info from this thread but still can't figure out what to do. I just purchased a mint condition 2001 kdx 200 all stock except for airbox lid (no snorkel) and a pro circuit platinum I pipe (the original). I ride at 0-1000ft and 0-35 celcius. I'm running from what i understand is stock jetting  at the moment and it is very rich, and alot of spooge. What would you think is the best jetting for me? anybody got any input?

id try 155/42 combo, middle clip

[josefmd TT Member]

hi_im_sean said:

id try 155/42 combo, middle clip

Yep, that should be close! I am running about the same conditions and am running 152/42/ second clip.  I think I can probably go dwn to a 40 on the pilot, since it's still a little rich mid-range.

Take care,

Matt

[josefmd TT Member]

josefmd said:

06 KDX 200
900 ft above SL(temps from 40's to 90's with humidity in summer)
Main Jet 150
Pilot 42
Needle Clip in 2nd clip
Air screw 1 in a quarter
40:1  Golden Spectro @94 OCT
BR8ES plug
Mods:  FMF Woods pipe, Turbinecore 2, Airbox snorkle removed, Moose Air filter

I finally have got my bike running really well!  With the stock jetting 158 main, 48 pilot with the FMF pipe it was still running rich and spooging quite a bit.  I dropped the main dwn to a 155 and pilot to 45 and it was still smoking and spooging too much.  The last drops are working well, with very little smoke and just a little spooge running out of back of silencer.  I have done a few plug chops and both high and mid range reading look good.  Insulator a light tan color.
(update) I think I might be a little rich on in the middle, so I raised the clip to the 2nd clip on the needle, and now my air screw is adjusted to a little less than one turn out to get it from bogging at the crack of the throttle.  I might try to raise the pilot jet back up to the 45.  Still getting a little oil running off the silencer:

Lasted update: Got rid of my rev pipe and put on a woods pipe.  Dropped my main jet dwn to a 150 and it seems I have found my sweet spot, at least for the spring and summer.  I might drop the pilot dwn to a 40 and move the clip to #3.

[hi_im_sean Get Help Now]

josefmd said:

Lasted update: Got rid of my rev pipe and put on a woods pipe.  Dropped my main jet dwn to a 150 and it seems I have found my sweet spot, at least for the spring and summer.  I might drop the pilot dwn to a 40 and move the clip to #3.

yea anything below 150 and the bike started feeking a little flat, i ran a 40pj just fine in mine, but it ran the same with a 42, so i put it back for some more lube. the 38 was too lean, this was winter in az, im sure in summer a 38 would have been ok. when i go up to 7000ft in the summer the bike runs rich, but definatly not rich enough to complain

[crazymxrider_93 TT Silver Member]

FUEL INJECTION FTW!!!!!   

[josefmd TT Member]

Yeah,  how spoiled you get with fuel injection.  I just can't believe I had 2 drop down 3 main jet sizes to get in the ballpark.  Oh well, it is still fun tuning and playing around with the jetting.

[linustitus TT Addict]

Thanks for the info josefmd, your settings should give me a baseline to compare to when I check my new KDX's jetting. It has an FMF pipe and will have the airbox snorkel removed soon so if I find something way different than your settings you guys will be hearing some questions from me.

[canyncarvr TT Member]

PLEASE POST IN THE FOLLOWING FORMAT:

year: 2000
model- 200 or 220:  2-hunny
conditions where you ride- altitude and temp: 1500-4500'  35º-80º
engine modifacations you have done: RB-Designs modified Air Striker and head reconfiguration, DFIII reed system, TwinAir, Hinson basket, '99 KX250 frontend w/.39 RaceTech springs and ProPilot valving (modified to suit), WER, 12 x 47 final drive, HoH revalved shock (OEM 5.0 spring), FmF -30 (rev profile), PC or OEM S/A...depending, YamaLube 4T, Interceptor @ 36:1.  
pilot jet: 38
main jet: 148
needle number/type and clip posistion (clip position is from the top of the needle as it is mounted in the carburetor, top being #1): DEK/4
air screw turns out: 2 1/2 to 2 3/4
fuel: 92 pump octane w/5% toulene and 5% Trick 114
how's it working for you?: Couldn't be better

[AtomicXRer TT Silver Member]

Model: 2003 KDX220 w/ KX125 Forks
Altitude: 6000-10,000 ft, 50-85º
Carb: RB modded Keihin PWK
Head: RB re-cut squish band
Reeds: Boyesen Power Reeds
Exhaust: FMF Gnarly Desert w/ Stock Silencer
Airbox: Lid removed w/ Twin Air Filter
Needle: CEK w/ clip at 3rd position
Pilot Jet: 40
Main Jet: 150
Pilot Circuit Air Mixture Screw: 7/8 turns out from fully closed
Fuel: 32:1 mix 91 Octane w/ 2T Repsol Synthetic

[honxl TT Member]

year: 05
model- 200
conditions where you ride- 2000-5000 80-110
engine modifacations you have done: boysen dual stage reeds, no airbox lid w/ uni filter, FMF Gnarly Header, Stock Muffler
pilot jet: 152
main jet: 42
Stock Needle and Position
air screw turns out:1-2.5
hows it working for you? Happy so far. Before I had pipe and reeds and went up to 7k ft I just had to play with air screw, but now w/ reeds and pipe I have to drop down my main at that elevation

[trackster TT Newbie]

Year: 2003
Model: KDX 200
Altitude/Temp: 4000-8000 ft. typical, sometimes up to 11,500 ft.
Mods: Snorkel still in place, Uni air filter, Boyesen Rad Valve (can't remember which reeds), FMF Gnarly pipe, Turbine Core II silencer, Wiseco piston (stock size), stock gearing.
Pilot Jet: 45
Main Jet: 155
Needle/Clip:#1174, 2nd position from top
Air Screw: 1 3/4 turns out
Fuel:  pump gas, 91 octane. 40:1 pre-mix ratio.

Comments: Run very, very well from idle to WOT with no sputtering or dead spots.  Biggest problem is smoking like an old steam locomotive and spooges like a Hawaiian lava flow.  Takes a 1/2 can of WD-40 to clean all the spooge off the silencer, pipe, rear tire, swingarm, shock etc. after each ride.  But runs great and amazingly never fouls a plug, even when riding all day behind my son in 1st gear at 1/8 to 1/4 throttle. I'm going to try working my way down to a 152 main and 42 pilot jet to see if that will help with the spooge and smoke.