• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Calling all carb gurus

  • Thread starter Thread starter Jason the terminator
  • Start date Start date
J

Jason the terminator

Guest
It started out trying to get my carbs jetted properly. I ordered a Dynojet kit, K&N pods and a Marving exhaust to replace the V&H 4to1 (so I would have a few more inches of ground clearance).

The PO had installed the V&H and jetted it by putting a 160 pilot air jet, 47.5 pilot jet, 125 mains. It would pop on decel indicating a lean condition.

I installed the Dynajet kit per instructions. Drilled the slides, 138 main, needle 3rd notch down, floats 22.4mm, 2 1/2 turns out on mixture screw, 160 pilot air jets cause I did not have the 170s. A bench sync was done also. I tried to get it to run with no luck. Checked the spark and it was week so I did a coil relay mod. Still could not get it to run properly.

Got a hold of Rustybronco to ask some questions and he offered to come over and give me a hand. After many hours trying to get it running he said I need to get the stock air pilot jets(170) and it was still blowing the spark out. So I investigated and bad signal generator and the ignitor was not testing good per manual.

Now we are into riding season so I was not going to mess around and try and figure out a 30 electrical system. I just order the 170 pilot air jets and a Dyna 2000 kit. When I received them I installed figuring that my problems were solved but they are far from it.

The pilot system is to rich. At 2 turns on the mixture screws at idle it will fowl the plugs in about 30 sec. After some phone calls with Rapidray and Rustybronco today here is where I am at. With 1 turn out, no pod filters and wet float height at 7.5mm it will idle and rev but has a flat spot at 2-5000rpm. It still seems on the rich side still.

The bike only has 6k original miles on it and all the parts that I listed were purchased new. The only thing that I am wondering about is that it looks like the valve cover was removed and wonder if the PO degreed the cams. If so could this add to my issues?
 
The flat spot shows you have a problem other than the main jet

Where do you have the needle set at?

If the cams were off, you would have poor performance. Pop off the valve cover and check the alignment
 
Big T said:
The flat spot shows you have a problem other than the main jet

Where do you have the needle set at?

If the cams were off, you would have poor performance. Pop off the valve cover and check the alignment
Click to expand...

Needles are third notch from the top.
 
One more little bit of info I am running Premium fuel. I don't think this should really matter but who knows.
 
Jason, Premium fuel won't matter.

Did you get a chance to drill a drain screw yet. if not I can drill one out sometime today.
 
rustybronco said:
Jason, Premium fuel won't matter.

Did you get a chance to drill a drain screw yet. if not I can drill one out sometime today.
Click to expand...

Couldn't find the right size, 6 mm but fine thread. I did get a piece of tubing that is about the same size as the screw. I got it in the hole and it dripped some but not horrible. Float height was at 7mm. That would make it a bit on the lean side correct?
 
I had to look up the spec. my 850 book said 4.5~5.5mm. 7mm would make it run lean.

how many carbs have you checked and were (was) the bowl(s) full?
 
Yeah it is 4-5mm. I only check the one as it was late. I'm going to check the others later today.

Well with the bowls lean and pods off it seems like a step in the right direction. It would actually run like this. I pulled the plugs after it ran for a few min. They were full of soot but not wet like they have been all the other times when it would die after 30 sec of running.
 
Didn't get a chance to pull the valve cover today got busy doing other things. I am really in need of any advice I could get.
 
I just got off the phone with Dynojet and the tech was not very helpful. He said "well I don't know.... you got me". I know wait for a return phone call for more words of wisdom from him. I don't have a whole lot of faith it will get sort with his help.
 
Ok I checked the valves and all are at .004 which is spec. Stopped at the local bike shop and talked to them. They asked a bout the throttle cable, choke, slides hanging up, valve clearance which are all fine. I picked up some 40 pilot jets and they didn't have 42.5 or any pilot air jets. I am going to drop the needle one notch and see where we are at.

On another note still no word from Dynojet 5 hours later. Guess they don't care to help once they got your money. If I ever purchase another jet kit it will be a Factorypro and Dynojet can go fly a kite.
 
You must log in or register to reply here.
Back
Top