Well, I spent from 9:30am to 2:30pm working and tweaking the big K today and have to say, I'm getting somewhere with this jetting!
Having busted another flywheel key this morning, it delayed my riding. But, I was just tweaking and tuning all day anyways. I decided to purchase a handful of diffrent pilot and main jets. Being my goal was shifting the powerband to the top-end, while getting an idle and having crisp responce. Well I achived about 90% of that. I believe it could use a bit more idle. But, here is the case. I started the day reading my service manual, then calling Forword Motion and talking to Eric and Rich for a few minutes. Well, after taking some notes, I hit the dealer for flywheel keys and jets. Setting up my tools, umbrilla (d**n hot), chair and stand, I began my decent in tuning.
I set my flywheel on the retarted section, and bolted the flywheel down using a lock washer and a air hammer with my portable air compressor.
(double security and peace of mind)
After a few hours of riding, and tweaking, I decided I would forget anything anybody has told me, cept for Rich and Eric who said that I should lean the bike out as the port job I selected and bore, and go by the seat of my pants. So, starting with a 165 main, 55 pilot, center clip needle, 1.5 turns on the air. I knew I was rich, so I started the decent, starting down low, changing the pilot to a 52 and turning the air screw slowly until I hit 2.5 not much idle, two puffs and too much d**n fuel. So, next? The needle, I decided to drop the needle a clip, achived a small idle but would die slowly, so I dropped it to the top clip. Idle!
Without the screw all the d**n way in! After hearing the lovely wonderful idle, I hit the throttle and what a d**n crisp noise I've never heard out of this bike. So, thinking it could be a fluke and just cause it always runs good from a start, I decide to take it for a run, and crap!
That guy runs, very responsive. But, with the retarted timing, it hits like a freight train in the top-end, but still some sputtering and puffing, having no more needles, I decide to drop the main jet. Yes my friends, I dropped to a 162 and will NEVER turn back. It runs like a bat out of hell and scares the s**t out of me.
Not a bit of hessitation. It could use a smaller pilot as the idle is still a little rich. So, I'm thinking maybe a 50 which I do not have. Anyway, I bring a new BR8EIX plug, slap her in, run for a few hours, wfo and trails, pop her out, crisp brown in the center.
I think I still need to lean it up down low, but the rest is just wonderful. I'm finding that maybe the port job on my KX has allowed more fuel to enter while killing the passage for air into the cylinder causing a serious richness problem.
Being everything I've learned from you guys and the wonderful guys at FM, I think I should open a jetting shop. I can't take any more days off this week, but I'm going to, this sunday, maybe kit the drag and trails, I will also pick up some pilots and do further testing.
I run Klotz Super Tech which has like 10% castor, so I'm not too worried about lack of lubrication, but I am very satisfied with the way it is now, but, the pilot can be fixed a bit, as I'm seriously out on the air screw.
Any ?'s or comments welcomed.
