James Dean Carb Kit Installed ~ I Need A Little Fine Tuning
Posted July 16, 2003 - 03:36 AM
Posted July 16, 2003 - 07:00 AM
You may have to go down to 165 or 160 main with that baffle. Everything else should stay the same. the baffle is rated at 92 db and you can shorten the tubes slightly to get more flow and closer to 96 db. Someone on this forum has done it. I forgot who and what length they cut it down to.
Posted July 16, 2003 - 09:58 AM
Posted July 16, 2003 - 10:04 AM
- 165 main
- Red needle, clip # 4
- 48 pilot
Hey Indy, I have 2 questions for you:
1. Did you buy the entire exhaust system or just the mid pipe and muffler?
2. Are you saying you set your idle via the mixture screw by leaning out the pilot circuit enough to increase engine RPM's . I've noticed that if I raise idle enough, I effectively eliminate the off-idle bog problems I've been experiencing. However, I've been adjusting via the idle screw not with the fuel mixture screw. Am I understanding you correctly?
Posted July 16, 2003 - 10:05 AM
The kit will also work on the Canadion model WR450. Depending on what PJ and PAJ you are currently running, the needles will cover the needed range. There are 2 settings for elevations 3-6000ft and 6000-9000ft. I would suggest keeping the stock PJ/PAJ and running the 3-6000ft recommendation. If it feels rich or lean, the lower altitude setting will be richer and the upper altitude setting will be leaner.
Posted July 16, 2003 - 04:51 PM
I bought the Thunder Alley muffler which uses the stock header and there is no mid pipe. The neat thing about the ceramic coating is the pipe stays very hot and I had to put heat shield tape and insulating washers to prevent the heat from getting through the sub frame or melting the rear plastic panel. The Krizman spark arrestor (USFS approved) is like a propellar inside the expansion cone. No wire mesh. The hot gases increase flow velocity and that is why it pops like crazy down low when I switched from the stock pipe with the baha baffle. I end up needing a rich needle diameter jetting to make it pull hard. I cant get over how it pulls hard in third from idle. I can ride the woods fast in third gear most of the time.
As for the pilot, I set my idle as rich as possible without wanting to stall using the zip-ty air screw. I do not want to have to high an idle with the idle adjustment. I try to set the idle adjustment to 6mph in first gear with no throttle on flat ground. Then I adjust the Zip ty screw as rich as possible without stalling the engine at that speed. I find the bike has the best bottom end pull which is where I ride most of the time. I short shift and rarely rev the engine high. It has plenty of power down low to ride fast.
Posted July 17, 2003 - 02:53 AM
Good info . . thanks. I'm going to try your idle setup. Beginning to think I've been running my idle a bit too low which may be part of my problem. I'll post results soon.
Posted July 17, 2003 - 05:45 AM
Posted July 17, 2003 - 11:52 AM
Adjusting the fuel screw is all that is needed in most cases and the needle diameter and clip position will adjust the low speed jetting for different altitudes and temperatures.
Posted July 17, 2003 - 03:01 PM
Posted July 19, 2003 - 09:47 AM
Posted July 19, 2003 - 09:03 PM
THANKS J.D. and Indy
Posted July 19, 2003 - 09:39 PM
Posted July 20, 2003 - 04:51 PM
On to the GYTR insert. Went 45PJ and down to 165 MJ. MJ was very close maybe a little rich. Overall I was disappointed in the performance. The hit on the bottom end was gone, very soft. No stumbling but I suppose it could still be rich. Once the revs built top end was OK. Engine braking was much more dramatic as well although I could get used to it and adjust. So for now I'm going back to the uncorked stock pipe and the jetting shown below until I get a quiet performance pipe.
Now if only I could learn to ride
Posted July 21, 2003 - 07:05 PM
Posted July 22, 2003 - 02:13 AM
Posted July 22, 2003 - 12:05 PM
sorry to hear the baffle did not work out. When we hook up and ride in the Daniel Boone forest you can try my bike and see what you think of the Thunder Alley pipe at 96db. We all have to get to 96db eventually. I think the performance is better than the uncorked stock pipe.
Posted July 22, 2003 - 07:44 PM
Posted July 27, 2003 - 04:39 PM
I read about it on another post and it was the 1st I had heard about the mod. The post never really explained what the mod did Thanks for any info.