'06 KLX250S Jetting Experience so far at 600' altitude

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#11

03-28-2015 | 12:57 AM

Zeno

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1st Gear Member

Joined: Aug 2014

Posts: 97

From: Waco, TX

Quote:

Originally Posted by Klxster

Zeno, due to your and a few others' experience, I have a #40 pilot and DJ140 main jet coming.. So more dyno tuning in near future - I'm still trying to get WOT AFR's below 13:1 from idle to 9.5K +..

I'm actually thinking I may go down in pilot size so I can have my fuel screw out further. What is the stock pilot size? 35? I was thinking I may just go down to #38.

#12

03-28-2015 | 02:19 AM

Klxster

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Joined: Jun 2013

Posts: 3,231

From: North Texas

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Yes, the stock pilot is a #35.. If the DJ140 gets my top end AFR in the 12's with the FMF system on, and it makes mopowah, your bike could probably get more, more than mine - My MCM peaks lower than your standard cam timings and the FMF system has the same O.D. as your KLX 300 system..

#13

03-28-2015 | 01:26 PM

zomby woof

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Joined: Jan 2008

Posts: 869

From: SW Ontario, Canada

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Quote:

Originally Posted by Zeno

Oooh! That's basically same altitude. What's your exact carb setup? Pilot, main, notch, etc.

Thanks!

From memory, I believe it was 38P, 125 main, and N1TC 3rd clip.

#14

03-28-2015 | 10:03 PM

Klxster

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Joined: Jun 2013

Posts: 3,231

From: North Texas

1st Gear Member

Quote:

Originally Posted by neonarc

I am very interested in seeing the differences between 2206 and 2152 kits needles, if any. I guess for more a aggressive the N1TC needle is the way to go. Has anyone tried both DJ and N1TC needles on the same bike?

Since I'll be putting in DJ #140 main jets and #40 pilots on both the KLX250 (2152 kit) and the KLX300 (2206 kit) , I suppose I had better provide the forum with a close up photo of the two needles. I can't find such a photo anywhere on the internet..

BTW: DJ will not sell needles - they make you buy a kit to get a needle..

Last edited by Klxster; 03-28-2015 at 10:07 PM.