I was just curious as to whether anyone on this forum was actually running a Dynojet kit in their carbs. If so, I was wondering if you had any trouble tuning in your carbs so that the bike runs correctly.
If so, what set up did you use so that the bike ran right? I'm more concerned with a Stage 3 setup than a Stage 1, but any responses would be greatly appreciated, and interesting.
Thanks everyone.
John L.
Have you bought the kit yet? If not just by the jets and pilots from a local dealer and them some #4 washers from a hardware store. Tell us what you have done to the bike and others will let you know thier jetting for the same or about the same mods. Or the great God of Jetting will give you a recomendation.
I've already got the kit and installed it. Bike still running kinda funky and I'm wondering what others did so that I can get some ideas. I've already PM'd the Guru, but I also wanted to get some input from people that have actually used the kits (although I am confident that the Guru will have the right info for me). It's just nice to hear what others have done.
The specifics for my bike are as follows:
Stage 3 DJ kit
clip position #2 on needle
128 mains installed
slides drilled and correctors installed
Pilot screws at about 3 turns
Carbs synchronized
K&N clamp-on style filter (RU-2970)
Cobra F1R slip-on cannister
Hopefully this gives people an idea of what I'm looking at.
Thanks
John L.
Your mains are to small. With the K&N, Cobra slip-on, you need to run 150.
The K&N jet kit numbers arent the same as Mikuni #'s so where you would use 150, actually 140 or 142.5 since he just has a slipon not a full exhaust, the K&N uses a different jetting #'s. I only know a few people here used the K&N cause the jetting info was easier to get using mikuni jets.
What kind of problem are you having with it running?
Ive heard that putting on the pod filters (stage III) will cause the bike to run very very oddly.. affected by weather etc... so that may just be a side effect of more power. Does it run weird all the time? Does the idle hang? Is there surging? details..
Mostly the problems are that the bike bogs down between 6000 and 8000 rpms when running full throttle. It gets worse the higher the gear I'm in. Also, in higher gears there seems to be a power loss after 8. It still accelerates, but its a lot slower (this could be due to the nature of the bike and not the jetting though).
There it is.
John L.
PS- If I'd have done more research about jetting before I bought the kit (or if I'd have been on this site already) I would have just bought Mikuni jets and shimmed the needles.
You did get your kit from the K&N website at the closeout pricing right?
It sounds like its too lean since its the mid and upper range which the filters affect the most.
is the 128 the largest main jet?
How does it run as far as throttle input? Bog it you do WOT, or bogs if you do part throttle?
Sounds exactly how mine is right now.. and its extremely LEAN. I have a V&H pipe, stock filter, stock carbs...
I would say lean. Im hoping it does make more power up top.. its not that quick above 8k and almost feels pointless to rev that high. :oops:
Quote from: JasonBYou did get your kit from the K&N website at the closeout pricing right?
It sounds like its too lean since its the mid and upper range which the filters affect the most.
is the 128 the largest main jet?
How does it run as far as throttle input? Bog it you do WOT, or bogs if you do part throttle?
No, i bought it out of a Dennis Kirk catalog and bought the filter seperate.
The 128 was not the largest main jet. I originally put in a DJ 134 main and the problem was there. The DJ tech suggested I try the 128, so I did and the problem's still there. I think I need to go bigger than 134.
I kind of addressed this earlier but all the problems occur at full throttle between 6 and 8 rpm. At half throttle the bike pulls pretty good thru all rev ranges. All the problems at higher gears above 8 seem to be at full throttle. I'm pretty sure its the main jets because most of the problems seem to be at 3/4 to full throttle, and that's where the mains contribute the most.
John L.
Quote from: DrtRydr23Quote from: JasonBYou did get your kit from the K&N website at the closeout pricing right?
It sounds like its too lean since its the mid and upper range which the filters affect the most.
is the 128 the largest main jet?
How does it run as far as throttle input? Bog it you do WOT, or bogs if you do part throttle?
No, i bought it out of a Dennis Kirk catalog and bought the filter seperate.
The 128 was not the largest main jet. I originally put in a DJ 134 main and the problem was there. The DJ tech suggested I try the 128, so I did and the problem's still there. I think I need to go bigger than 134.
I kind of addressed this earlier but all the problems occur at full throttle between 6 and 8 rpm. At half throttle the bike pulls pretty good thru all rev ranges. All the problems at higher gears above 8 seem to be at full throttle. I'm pretty sure its the main jets because most of the problems seem to be at 3/4 to full throttle, and that's where the mains contribute the most.
John L.
You might want to clean your carbs out completely. My carbs did this, and i could not figure out why... i still have no clue, but i used srinath's and it works fine. Mine were jetted and clean. Its weird.
If I remember right, and the jetting guru can correct me if not, I think you need to fill 2 of the holes in the slides.
Here is the link about the slides stuff.
http://gstwins.com/forum/viewtopic.php?t=2586&highlight=slides
Quote from: JasonBIf I remember right, and the jetting guru can correct me if not, I think you need to fill 2 of the holes in the slides.
Here is the link about the slides stuff.
http://gstwins.com/forum/viewtopic.php?t=2586&highlight=slides
Already did that. Part of the jet kit included correctors that you put in the slide holes. Two of them were plugs and the other two decreased the inner diameter of the holes. Each slide got one plug and reducer corrector. I still think its the mains, but I need numbers. I'm thinking 144 or 146 (DJ mains are in increments of 2 up to 150).
John L.
I had this problem for a while after putting in my stage 3 kit. I found fuel starvation to be an issue. With the better flowing intake and exhaust I didn't have enough vacuum signal in that rev range to keep enough fuel flowing.
Try what I'm doing now. Put the fuel vavle on "Pri" before starting it up and leave it there while you ride. Turn it back to "On" when you're not riding like it's an On/Off valve. This cured my cruising blues.
If that fixes it you know you have the same issue I did. I plan on eventually replacing the valve entirely but haven't gotten around to it yet.
Another thing to know about the Stage 3 kit is that it really is a RACING kit. So it's made for max horsepower at the top end and not for "correct" jetting and as such it does run slightly lean.
I also ended up going 4 turns out on the mixture screw for proper idle instead of the recommended starting 2 turns although I still occasionally run into idle issues when the bike is hot.
Next time I open up the carbs I'll most likely move the needle up a notch too for slightly richer cruise if my new fuel valves don't solve the problem.
I got you PM Dirtryder but didn't see the post but where is the situation now...I think I told you to try to lift the needle some right...Well That's what I think.
Lemme know.
Cool.
Srinath.