Maintenance & Technical > KX250 / KX125

1991 kx125 jetting

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Friar-Tuck:
 Sorry J,
 The excel worksheet doesn't cover Kawasaki needles.
   You could give these guys a call,
          Sudco
3014 Tanager Ave. Commerce, CA 90040 U.S.A.
Tel: (323)728-5407    Fax: (323)728-8060     Email: sudco@sudco.com

Report any problems with website to: sudco@sudco.com

Due to the volume of email we receive, you may not receive a reply immediately. For a faster response, please call
(323)728-5407 Monday thru Friday 8:30am-5pm (pacific time).


There is a section of Eric Gorr's
 Offroad and Motocross handbook on '90-91 KX 125's  pg187-88
   I would highly recommend getting the book, there is stuff for new guys and engine builders alike.   (or search the book in amazon  :wink: )

http://www.amazon.com/Motocross-Off-Road-Performance-Handbook-Motorbooks/dp/0760319758/ref=sr_1_1?ie=UTF8&s=books&qid=1234197652&sr=8-1

  Tuck\o/

Jopiz:
Thanks buddy!

I think im gonna email them and ask about the needle. I tried today to measure my needle and didnt get any usable information. 

-J

Jopiz:
Guys at Sudco couldnt help me with the needle. They said that N0EJ is the Keihin mark but it is a multi taper needle only available to the OEMs, so they didnt have an equivalent.

I wonder is there a "how to measure your needle" tutorial or something? A book with that kind of information would be worth to buy.  :roll:

-J



Friar-Tuck:
 At the top of the needle page there is a diagram on what the measurements are.
You should be able to use this to find an equivelant or "close".
http://www.sudco.com/vol33/135-136.pdf

  Here's another site that says they may to be able to get discontinued OEM carb parts.
http://www.motorcyclecarbs.com/parts_W122.cfm

 Tuck\o/

Jopiz:
Well, the problem is, i dont know how to measure that thing. To me, it just doesnt seem to have that "L1" straight section at all. I can measure or calculate the taper. And where to get that diameter measured?  8-)

Is that L1 lenght from first clip to the point where needle diameter is 2,515 mm?

http://www.carbparts.com/keihin/needles_tuning/jet_needles/pj_34_39_jn.html

-J

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