Jetting help
-
- Member
- Posts: 29
- Joined: 03:40 pm Nov 30 2020
- Country: Canada
- Location: Ontario, Canada
Jetting help
Hello. Recently I have been trying to figure out my jetting situation. Let me first state, I have basically no experience with jetting. My bike has been running pretty rich. Spooges and fouls plugs. Bike is a 1993 KDX200. My current specs are as follows:
48 pilot
150 main
R1173N needle in 4th clip pos
Air screw 1-1/2 turns out
50:1 Motul 710 at 91 octane
NGK BR9ES plug
Elevation 250m (827ft) above sea level.
Temps range from 20-30°C (68-86°F)
Bike is completely stock with stock exhaust and reeds.
I did a bit of reading and many people recommend a 45 pilot and a 155 main at 32:1 for the kdx200's. Does the 155/45 at 32:1 sound about right for my info? Any help is appreciated.
48 pilot
150 main
R1173N needle in 4th clip pos
Air screw 1-1/2 turns out
50:1 Motul 710 at 91 octane
NGK BR9ES plug
Elevation 250m (827ft) above sea level.
Temps range from 20-30°C (68-86°F)
Bike is completely stock with stock exhaust and reeds.
I did a bit of reading and many people recommend a 45 pilot and a 155 main at 32:1 for the kdx200's. Does the 155/45 at 32:1 sound about right for my info? Any help is appreciated.
- KDXGarage
- KDXRider.net
- Posts: 14047
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Jetting help
Which pipe?
Which spark arrestor / silencer?
Assuming everything is working proerly:
NGK BR8ES
45 pilot
#4 from the top? move to middle (lower needle into hole)
reevaluate
Normally, I preach one at a time, but not this time.
Main may need a bump
Which spark arrestor / silencer?
Assuming everything is working proerly:
NGK BR8ES
45 pilot
#4 from the top? move to middle (lower needle into hole)
reevaluate
Normally, I preach one at a time, but not this time.
Main may need a bump
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128
-
- Member
- Posts: 29
- Joined: 03:40 pm Nov 30 2020
- Country: Canada
- Location: Ontario, Canada
Re: Jetting help
Pipe and silencer are stock. Clip pos is #4 from top. I also misread the needle, it is an R1172N
- KDXGarage
- KDXRider.net
- Posts: 14047
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
- Contact:
Re: Jetting help
Swap to an "8" heat range BR8ES.
Try a 45.
Move the needle clip to the middle.
Try a 45.
Move the needle clip to the middle.
Thank you for participating on kdxrider.net.
To post pictures from a device: viewtopic.php?f=88&t=24128
To post pictures from a device: viewtopic.php?f=88&t=24128
-
- Member
- Posts: 29
- Joined: 03:40 pm Nov 30 2020
- Country: Canada
- Location: Ontario, Canada
- Slick_Nick
- Supporting Member
- Posts: 1675
- Joined: 10:06 pm Oct 22 2009
- Country: Canada
- Location: Calgary, Alberta
- Contact:
Re: Jetting help
Oil ratio is determined by the oil manufacturer. Not by Kawasaki. 50:1 is fine.
'00 KDX 220R
-
- Member
- Posts: 29
- Joined: 03:40 pm Nov 30 2020
- Country: Canada
- Location: Ontario, Canada
Re: Jetting help
So I picked up a 45 and a 42 pilot. Going to try the 45 first and see how she runs. Also grabbed a couple br8es plugs as well
- bufftester
- Platinum Member
- Posts: 3455
- Joined: 06:03 pm Oct 31 2012
- Country: USA
- Location: University Place, WA
Re: Jetting help
There really is no good alternative to following the PWK jetting procedure, as Keihen published it IMO. Start with making sure the bike is mechanically sound, then fresh filter, new (BR8) plug, fresh fuel mix using your preferred oil and ratio, then set the Air Screw to determine the correct pilot, then work up from there. Everything else depends on the proper pilot and a mechanically sound intake/exhaust. You will gain a better understanding of what jetting changes do to the bike in different throttle regions, how your specific bike reacts (all are different). That becomes your baseline so that ANY changes (pipe, silencer, fuel octane, oil type/ration) can be accommodated easily. All that said, your pilot sounds too large and start on clip position 3 as stated above to get you started, then follow the jetting guide.
-
- Gold Member
- Posts: 531
- Joined: 12:42 pm Sep 09 2012
- Country:
- Location: Edmond, Oklahoma
Re: Jetting help
Float level? Is the needle sealing?
At your altitude a stock bike should run pretty well. To develop a baseline it might pay off to set everything to factory settings.
At your altitude a stock bike should run pretty well. To develop a baseline it might pay off to set everything to factory settings.
- SS109
- KDXRider.net
- Posts: 5770
- Joined: 05:11 am Aug 23 2009
- Country: USA
- Location: Tucson, AZ, USA
- Contact:
Re: Jetting help
Follow the jetting guide here as it works: viewtopic.php?f=105&t=1156
Youtube Channel: WildAzzRacing
AZ State Parks & Trails OHV Ambassador - Trail Riders of Southern AZ
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue
'11 GasGas EC250R
AZ State Parks & Trails OHV Ambassador - Trail Riders of Southern AZ
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue
'11 GasGas EC250R