Endoquest,
Got a new carb from Cycle Zone KTM, Mike Kruger (the manager) came through for me. I sent him the original carb back (mailed it!) and he was also unable to make it work. KTM wanted the carb and wrench it to make it work or replace it. Mike sent it, but he was so cool that he took one of his floor bike. How cool is that! He figured that I had gone through enough pain that I did not warrant the wait. Anyhow, I installed it and guess what...the darn machine would still sputter and run rough. Well, I ended removing a grossly fouled plug and replacing it (the previous carb ruined the plug). The bike immediately changed into a purring manchine! :thumb: The original carb is definitely faulty, so far I have not heard from Mike, but he should know as soon as KTM figures it out.
A few weeks ago James Dean suggested I use a OBDVP needle so I installed it and it rocks. I have the following setup for 8400' (40-50 F, dry air) 42PJ, 1 1/2 turns on the FS, 165 MJ, 100 PAJ, 200 MAJ, 85 SJ (startjet), and stock acceleration pump (stock exhaust). The bike is now predictable and runs as expected. I have not started messing with optimizing the carb, but that will come latter. I just want to ride before the white stuff falls!
Regarding suspension, I am going to install Chuck Wagoneer's kit on the front and replace the rear springs for something stiffer. I am 190 on my b-day suit and I think a bit too heavy for the back shock.
I am also curious to know what the heck is wrong with some of the carburetors. It usually takes a lot of noice to make the manufacturers respond to a problem, but when PR kicks in things seem to move a bit faster!
I do have a few questions for you (or anyone that might know the answer), I know that the BK mod allows you to adjust the amount of squirt you get from the accelerator pump, but why adjust it? I mean, what is the effect of the squirt on the initial throttle twist (i.e. pilot jets/initial needle movement)? How do you know how to adjust the squirt amount or the timming of the squirt actuation, to a given needle type (i.e. Dxx series vs Exx or vs Fxx series)? If you know, let me know. I would like to understand how the BK mod affects the carb and its effects on carburetion before I do it to my new carb. Thanks JC