KTM 250SX Keihin PWK 36 Jetting?

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1/14/2019 1:32 PM

Anyone have a baseline jetting specs for running a Keihin carb on the new KTM 250cc motor?
I'm running a stock engine with a pipe and around sea level and 100ll/91Oct mix, 50:1.
I heard the new 250 motor needs more fuel than the 2016 and older 250SX, FWIW.

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KTM250SX YZ125 YZ85 PW80 ZX6 FZX700

1/17/2019 5:02 PM

Bump
Anyone?

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KTM250SX YZ125 YZ85 PW80 ZX6 FZX700

1/17/2019 6:23 PM

Im running the 38 PWK air striker on my 17 TC250. Similar conditions. My settings now are 42 pilot, NECJ needle 3rd clip, 175 main. Also, decked the head and set the squish to .045” and it’s night and day better than stock.

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1/18/2019 9:46 AM

paddyB745 wrote:

Im running the 38 PWK air striker on my 17 TC250. Similar conditions. My settings now are 42 pilot, NECJ needle 3rd clip, 175 main. Also, decked the head and set the squish to .045” and it’s night and day better than stock.

Does it still have a hit? I love the stock power during the SoCal winter, but find myself unplugging the wire as tracks get hard or if I am on the trail.

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KTM250SX YZ125 YZ85 PW80 ZX6 FZX700

1/18/2019 10:03 AM

YZed250 wrote:

Does it still have a hit? I love the stock power during the SoCal winter, but find myself unplugging the wire as tracks get hard or if I am on the trail.

Power is very smooth, not a huge hit and it’s super easy to ride. You can easily adjust that as well with the power valve spring. I ride a lot of off-road and motocross and the motor works great for both.

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