• 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.

Synchronizing when #3 seems to pulling all the vacuum

  • Thread starter Thread starter Hummer
  • Start date Start date
H

Hummer

Guest
First time synchronizer here and figured I'd post to see if I get a quick reply while I run out to pick up a carb adjustment tool for that pesky middle screw...

Where do I start when #3 is pulling all the vacuum? Small adjustments to the three other carbs until it balances enough for me to start tweaking? Just to confirm, turning the screws counter-clockwise should result in more vacuum and clockwise should lessen it, right?

Thanks - hope someone is feeling helpful over the next 20 minutes!
 
Which screws are we speaking of? The ones on the throttle linkage right?
 
Haha...tough to avoid buying other new tools...

I'm working off the Morgan Carbtune tutorial but couldn't keep the bike going without sucking the oil out of my homemade manometer. Thought I started with a good benchsync...bike runs just fine. Manometer is telling me otherwise...
 
Its on the list of tools to pick up. Oil in transparent lines seems to work quite well!

So the levels all seem to be the same at 2000RPM...another question though-does it make sense that the engine seems to run just fine with the air screw almost fully seated? Played with it before and after sync and it seems to be just fine from seated to about 2 full turns out. Tutorials say that optimal is turned in as much as possible so.....?
 
Last edited:
I always prefer to leave threads resolved, if possible, so here goes -

The homemade manometer worked well for me. All I had was 4 seven-foot lengths of clear plastic tubing, connected to the Z1 permanent sync ports on my intake. I connected the set-up to a spare piece of plywood in my garage and filled each line with approximately a foot of gear oil. A quick online search for homemade manometer will bring up a few good pics for anyone interested.

Adjusting the other three carbs incrementally balanced them to #3. It doesn't take much of an adjustment to one carb to throw the other three into chaos. Idle speed obviously makes a big difference too, but I didn't realize how much of a difference there could be. In hindsight, it makes sense (and is likely common sense to any of you who do this regularly).

The mixture screw is a little more of a mystery to me, although repeated searches on the forum keep leading me to a favourable answer. There shouldn't be a big difference unless something is way off. With that logic, I'll leave them at 2 full turns out from seated.

The bike seems to run well - a few more miles on her should give me a better indication. I blew a weld on the shift linkage for my forward controls, so it was a short ride. There may be a bit of a fueling issue, as the bike felt a little jerky after a few shifts when I got on the throttle. The linkage broke as I was trying to figure that out. Hopefully more diagnosis time tonight.

Thanks for the help to this point!
 
You must log in or register to reply here.
Back
Top