Maintenance & Technical > KX500 Original
Jetting!!! Again and again and again!
RoostDaddy:
I know there is some very good baseline settings for both the 44 lectron and 39 pwk listed throughout this thread. Just wondering if anyone has some advice on baseline settings for the 41 pwk pro series and/or 38 air striker.
umberto:
I rode my 1988 KX 500 engine today, and the jetting seems very lean. The motor stumbles and just seems generally unhappy, though it idles and starts well. The motor has been bored to 88 mm, has a Wossner forged piston, 89-up CR 500 pipe, stock carb, and stock ignition in the middle timing setting. What do you guys suggest for main jet, pilot jet, needle jet, needle clip setting, etc? I'm pretty far out of my element, and I'm not even sure where to start now that the motor is bigger. Any help would be appreciated. Thank you!
umberto:
I forgot to add that OKC is at 1,100' and I sometimes ride in SE Oklahoma at around 400'. Thank you!
Danger4u2:
It was 57 degrees Fahrenheit today.
sandblaster:
--- Quote from: umberto on November 15, 2015, 08:24:52 AM ---I forgot to add that OKC is at 1,100' and I sometimes ride in SE Oklahoma at around 400'. Thank you!
--- End quote ---
Pro Circuit recommends the following at sea level for a stock bore
Main 170
Pilot 60
Needle STD
Clip 3rd
Air Screw 1.5
But, your bigger bore dictates smaller jetting.
What is currently in your carb?
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