250-500cc wr 300 got a Keihin

2009 wr300.

Great on throttle but boggy off idle no matter what I do.

I love this bike and can't wait for the different carb.

hopefully will have by this weekend for a ride report on monday.

Hello! How is it jetted? What weatherconditions do you have? What needle?

Johnny

Johnny,

I've tried many different combos since purchasing the bike. Currently I am runnning this setting:

Gay Needle 2nd clip
main=440
pilot=35
fuel screw 1 1/2 turns

Temperatures currently in the 40 to 55 farenheit (that's above 0 for you arctic types).

I am not a racer by any stretch but am very interested in getting this bike to run at its potential which it currently isn't.

I currently live in town so its a little hard to get a good test on my jetting without making my neighbors mad. If I have time I might go up one size on the pilot before the weekend, but I just might have a new carb by then.

Please post up after you've had some time to test and tune with it.
My PWK is scheduled to arrive today, but my bike is in pieces and wont be back together for a few weeks.

Ok. Have you tried the needle in middle clip position? I changed my needle to 6DEY15-74 and it´s a good improvement. I run this needle in 2nd clip position from top as it,s richer from 1/4-1/2 throttle then the GAY needle. I have a great smooth idle with this needle. I use a 40 pilot with it. I guess your bogging is caused by the pilot jet. I use 45 on mine with GAY needle!. we have about 30-35F here and i have 470 main on the technical iceracing tracks.

Johnny

I don't know if I tried the middle clip but I did try the 3rd (with the same jetting as stated above) and the bike was noticeably worse. I went back to the 2nd and called it good because it felt like I was about as good as it was going to get.

I am sure someone with more jetting experience would be able to fix my issues but I really like figuring things out if I can. Plus its fun to work on the bike.

That said I am going with the pwk just because it sounds a little more user friendly and I always like the sound of that.

FYI, Motosportz is now carrying the JD jetting WR 250 and WR 300 carb and they will be shipped for free in the USA, oh price is 239.95. Call or email to order.

J.D. Needles are not GAY

They are raging multi-taper pieces of pure testosterone!

PWK all the way

Air strikers rule.

Try a power now insert for insane response off the bottom.

Fuel injection just got pushed back 2 years

Talked to JD himself this morning. I had the blue needle #2 and it was lean in the midrange but good off idle, went back to #3 and it was good in the mid range and fat off idle. I installed the red needle #3 and it seems really good everywhere.I am riding tomorrow so we shall see what it does in the woods. I was under the impession that the red was 1/2 clip leaner throughout the entire range of the needle but it is just leaner from idle to 1/4 throttle, from there they are the same according to JD
42p-red#3-175 main a.s. 2-1/4

Intresting. I still use the Mikuni, but i changed the GAY needle to 6DEY 15-74 just because it´s richer in the middle too. I have second clip pos. Perfect idle and very smooth from the bottom. We have around 25F and i use 40 pilot, 470 main on the icetracks. Just a tip for the guys who still use the Mikuni.

42p-red#3-175 main a.s. 2-1/4[/QUOTE]

That's what I am running right now as per your suggestion Troffer. Went for a longish ride sunday and the bike ran awesome. No single track just jeep trails, gravel roads and a short run on the pavement to stop at an old watering hole .

Very fun day on a very fun bike. The bike finally feels right and I am very glad I made the switch to this carb.