weird jetting?

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scheckaet
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weird jetting?

Post by scheckaet »

Ok, I have some concern about my jetting on my hybrid.
I have a lot of spooge but my jets seem very small...

200 with RBD head and carb
no airbox lid (KX 125 air box)
wood pipe (with 3/4 inch extension at the cylinder)

pilot: 38
main: 150
CEK needle: middle clip
air screw: more than 2.5 turns out before i get an increase in rpm (like described in the jetting tutorial)
last time I inspected the reed, they looked good. Wondering if this could be the issue since it could mimic a rich condition.

I want to try a 35 pilot but I'm kind of wary about trying anything smaller than 38, what do you all think?
Have you ever seen a jetting this low on a kdx?

thx
Brian
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weird jetting?

Post by Brian »

I ride at nearly sea level on an RB'd 220 and I have a 35 pilot, 155 main with DEK on bottom (5th) clip.
KX 250, KDX 220, KDX 220, KDX 200, CR 80

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Julien D
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weird jetting?

Post by Julien D »

I'm not sure the 220 and 200 would compare, but yes, that airscrew setting would indicate you are too rich on the pilot. I would step it down and see what you see. You are quite unlikely to do any damage by going to small on the pilot in any case. Give a 35 a shot, and just pay close attention to the low end throttle response. You will know very quickly if it is too lean.
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