All 2st About the Mikuni/Keihin swap:

No slack, i have also ajusted it.

I will try tonight with the clip needle at is top position (lean) and with the clip needle at the lower position to see the difference.

If i can have a JD kit right now, i will pay $100 for it, its not the question. I just dont want to wait 2 weeks for them. I have access to all oem Keihin needle since my friend is a Keihin supplier for the Quebec (DL Performance). If i can have the spec of the JD Needle i can probably match them (or close) in the inventory of Keihin needle.
Same thing for that oem Yamaha N3VE needle.

I whant to ride the bike now !

I just like to gripe

If he would sell just the 2 needles for $50-60 and NOT make me buy main jets that I already own then I'd buy it. It's the principal of selling me crap I already own and being unwilling to budge is what irks me.

Try the N3EJ. It cant cost more than $7 and will at least let you know if the needle is the culprit. That's worth $7 to me!

Is your off idle problem feel like the choke is still on even when it's not? If you warm up the bike and ride around try pulling out the choke and see where that gets you. That'll help point you in the right direction.

A competent machinist can machine your slide to run leaner, but there's no going back once the mod is done.

If money were no object, eh?
Just buy one of everything and have it all at your fingertips.

OK, i just came from the garage and i have try the clip needle in the top (leaner) and the clip in the bottom (rich). The bike work really better with the needle at is leanest position (clip in the toP), but not good enought.

Tomorrow i will try a couple of other needles.
Anyone have the spec of the n3ej needle.

I dont understand why i can have at least a rideable bike with the ddj needle...

I think the N3EJ will be richer than the DDJ at the same clip position. Depending on the clip position you'll be leaner 0-1/8

Hey Woodschick! What slide did you have before you changed it? Why id you change it and where is the improvement in the powerband? I have a 7# in my 300 and was thinking of trying 8# or something to see if my 1/8 throttle bludder would go away. What do you think of that?

Johnny

Ok, thanks for the info so far! Is there a 9# available? The other solution would be to find a needle that is leaner right off throttle, but i´m satisfied with the JD needle otherwise, so the question is wich way to go! It´s difficult for me here in sweden to call JD and have a good discussion too. There´s quite some spooge when i ride on small throttleopenings. It would be intresting to hear from you when you have tried the7# slide! There is a slight "Brrrapp" when i open throttle quickly but just a little bit.

Johnny

2009 WR125 PWK trail tested

Temps 85-90, elevation about 1500 ft. I put about 40 miles on my bike with what came in the PWK carb: 185 main, 45 pilot and I guess it was the JD blue needle since the red was an extra. I moved the clip to the 3rd pos and the PV arm moved all the way up. Since I bought the bike used, I had a budget to spend some more on mods and I replaced the carb before even taking the Mikuni out for a trail ride. Like ya'll said, this thing can lug-I was amazed and the carb ran great but I had quite a bit of spooge.

Temps 60-80, elevation about 1000 ft. Put another 40 miles went to a 180 main and 42 pilot. I didn't notice much difference in the way it ran-which shows it's not real finicky. I may have felt a little less torque off idle in the morning when it was cooler-at the heat of the day it seemed to run with more torque off idle-or was I just imagining it (maybe getting tired-ha). All in all, this bike is amazing! Heads and tails above my 2003 Honda CR125. Any suggestions let me know!

Hi, from what i have talk with the Keihin guru here, the equivalent of the Yamaha N3VE needle is the N427-48CEQ from keihin.

Tonight i will try this needle + the CEL and CEJ needle.

I cross my finger for a good result.

I just return from a small ride to try different needles.
The best result i have is the CEL (clip top position) witch is supposed to be pretty close to the Yamaha N3VE needle.
The buttom end and response is really better and was a big improvement but not as good as what i have with the Mikuni.
The mid and top end are really incredible, this bike surprise me every time i ride it

With this setting (178 main, 42 pilot, CEL needle in leanest position) the bike is now rideable but the buttom end definitly lack power and the transition from lower rpm to midrange is very abrut and violent.
Is it possible that my pilot is again to big ???

Also, when i close the trottle, the engine make some "ding ding ding" when it slow down.

Thanks again for your input.

Francis

Usually if you get "ring ding ding" when you close the throttle, the pilot is too small.

Yeah, sounds like you are on the lean side...how many turns out is your air screw? Correct me if I'm wrong but it should be 1.5 to 3 turns out (further in is richer). Your hard hit could be caused by too rich or too lean, but the ding ding ding is too lean.

HRC630,

In my WR250 I had great luck with the CEL needle but I was running the 45 pilot and I am quite a bit higher than you. I ran the needle in the center position but I also had a much leaner main jet. Once again I was riding it from 4000' to 9000'+ and it ran clean with great responsiveness and power everywhere.

Walt

Thank you very much !!!
Tonight i will try again with a bigger pilot.
I will try the 45 and 48 plus play again with the needle.

Also, what slide do you ride ? Mine is a #7


Francis