Maintenance & Technical > KX500 Original

Jetting!!! Again and again and again!

<< < (44/120) > >>

KXcam22:
Rexrob,
  Not really a jetting topic but for a plug try the BPR8ES.  THe "P" protruded nose helps it run cleaner, and they are cheap at Lordco or other.  Mine last a season and aid in starting (1 kick hot or cold). THe ZXR1200 is fast. Why no 1/2 throttle wheelie in 5th? Should do it. Cam.

gowen:
Cam, I've had alot of success using the EIX plug. During all my jetting woes, I believe I've only used two and that is only cause I wanted to change it, it did not foul.

RexRob:
I have been running the br8eix like Gowen, well ever since the br8eg was black and wet, and the eix was black and wet, now I need to change the jetting. I have been doing a lot of thinking and I may go to the 55 pilot. Team green says for 2002 kx500 with my alt. and temps (I won't ride below 65) 2nd clip (which I have) 170 main, and 55 pilot. Sound good? Maybe burning more fuel will give me more power, if I can do it cleanly. Hate to pull the carb off again, but I am a perfectionist by nature. I don't have a 170 right now either. I have the 55. Need to grind the screwdriver down that I used for the pilot swap so it doesn't take any metal out of the passage, had me worried... The weird thing is that the reccomended plug was a 9 series NGK. I am not going to 9. Thanks cam for the sugguestion on the extended nose one.
The bike will only wheelie 5th full throttle little tug, 5th is FAST, stock gearing. 4th will do it on a roll on power wheelie, 3 rd is radical, 2nd is death defying, 1st, well you better be real good or put a wheel on your helmet. This is on pavement, I can ride on the road I live on, everyone does and I have never seen a cop up here, ever. We don't have a 1/4 mile or even a 1/8 mile straight, maybe a 16/th. Stopping has always been my problem, kinda used to the zrx brakes.
Wind up overshooting and looking for a way out, which I have done quite well. My 91 was the same wheelie wise, and I had that ported with rad valve and psi pipe. Where I used to live when I had the '91 there was a railroad grade about 1/2 mile away. I decided to ride the bike up the streets to get there. On the road that leads right into the grade there were 2 guys working on locking their hubs in their pickup. I went by them in 5th, yanked the bars and nailed it, the bike came staright up, My feet came off the pegs like superman, somehow I got her down and didn't loop it, I still do not know how I did that!!!!! I will try to get the changes done this weekend and let you know how I made out. Good luck Gowen and thanks Cam!
Rob :blowup:

gowen:
I've been very happy with the results so far with the jetting. I've got ALOT of work to do with the KX now, but have the parts ordered, the mounts welded and should be ready this weekend. Anyway, I will get around to it. I just had to refill my C12, so I will start to run pure C12 instead of a 50/50 mix and see how this works.

gowen:
No updates yet, until today.. I took the KX out today to the local sand pit today to do some drag racing, trails, ect. mainly in the sand. It has not rained in a week or so, so the ground was very dusty and the air was over 80 degrees. Hot for a Halloween day I have to say, anyway no humidity or at least much. Well, I took the KX off and gave it a run and it felt very sensitive in the mid range, very lean. But, I had not changed anything from the last run. But, weather and air I guess make a hell of a diffrence. Anyway, starting with the air screw, it made no diffrence, I could get the idle up, but the low-er range was VERY sensitive. So, I ended up lifting the needle one more (5th clip). Man that worked wonders. Anyway, I ran the tank out of gas and decided to run my mix of pure C12 and MC1 (50:1). Yes, the KX (or mine) is made to run of streight race fuel. Very good responce. Very fast running machine once tuned well. The surges are there, but not as much. Idle is the same and it is great!

Anyway, for the question:

Where do you think I should go when my needle is sitting on the 5th notch? The main and the pilot I believe are great. After the 5th notch, it was awesome. Should I put it back on the 4th when the weather cools down again?

Navigation

[0] Message Index

[#] Next page

[*] Previous page