• 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.

carb sync tool?

  • Thread starter Thread starter 62 bugzilla
  • Start date Start date
6

62 bugzilla

Guest
I have a airflow syle carb sync tool used on side draft car style carbs and there are 2 syles one is metal with a adjustable center to get the floating piece in gauge in proper range then you just go carb to carb holding it on the carb opening to check flow. the other is a empi that is plastic with a dial type gauge and you do the same thing but it has a larger range but you do have to adjust idle more to get it in the middle range first then go carb to carb to adjust the same. Will either one of these work on motorcycle carbs? I have used them alot on mikuni side drafts and su style car carbs with success but see everyone using a tube with water on all carbs at once or a different syle that again does all carbs at once? I was hoping to use what I have. Do I adjust the linkage for syncing or something different?

Style 1 http://www.nextag.com/BUGPACK-UNIVERSAL-CARBURETOR-SYNCHRONIZER-648335072/prices-html

style 2 http://www.jcwhitney.com/universal-...72&zmam=15972153&zmas=21&zmac=123&zmap=492172
 
Last edited:
They won't work. I've tried. Best bet it to find someone close with the right tool.
 
Morgan Carb Tune is the best. Exchange rate is favorable right not too. I'm thinking about buying one and getting rid of my mercury gauge set.
 
I currently have a set of mercury "sticks" that I have had for over 30 years.
They still work well and are still the standard on which everything else is based.

Motion Pro sells a tool for about $85 or 90 that uses some sort of liquid that will look at the vacuum in all four cylinders at the same time.
It works just like the mercury gauge, but uses a more evironmentally-friendly fluid.

Reported to be the best (I don't have one yet), is the Morgan Carbtune. I checked just the other day, with the current exchange rate,
it is $85.85 to have one shipped to your door. It also looks at all four cylinders, but uses NO fluid, so it's a lot easier to store and transport.

.
 
Hi,

I love my Morgan Carb Tune. You must get a set of vacuum adapters from Z1 to go with it. The plastic adapters that come bundled with the Morgan unit are small and hard to work with on a hot engine. Don't forget the special carb adjustment tool.


Thank you for your indulgence,

BassCliff
 
Motion Pro sells a tool for about $85 or 90 that uses some sort of liquid that will look at the vacuum in all four cylinders at the same time.
It works just like the mercury gauge, but uses a more evironmentally-friendly fluid.

Reported to be the best (I don't have one yet), is the Morgan Carbtune. I checked just the other day, with the current exchange rate,
it is $85.85 to have one shipped to your door. It also looks at all four cylinders, but uses NO fluid, so it's a lot easier to store and transport.

.
I bought, used, and sold a set of the 'new age' Motion Pro units. I'll save you the frustration, buy the Morgan. Hook it up, synch and go. No calibration, no fluid separation.
 
Cliff where do you get the special carb adjustment tool from and how does it work.

Hi Don,

I bought mine along with the Morgan Carbtune. It's a long screwdriver inside of an 8mm socket. Here's the link: http://www.carbtune.co.uk/carbtool.html

carbtool.jpg


ctoolend.jpg


Use it on the vacuum adjustment screws between the carbs. The socket loosens the jam nut, adjust the screw, then tighten the jam nut.

reassembly040410_11.jpg


And of course you know where to use the tool, on the vacuum adjustment screws.

reassembly040410_01-1.jpg


This is the 5mm adapter kit I got from Z1Enterprises.com.

<< Click the picture to go to their sales page.


Thank you for your indulgence,

BassCliff
 
Morgan Carb Tune is the best. Exchange rate is favorable right not too. I'm thinking about buying one and getting rid of my mercury gauge set.
Care to send that unit via USPS to me in CA?
:-\\\
 
I can verify The Morgan Carb set up is first class !! The tool makes the adjustments very easy. Accept no substitute. It will last a lifetime.. I made the mistake of buying a set of vacuum gauges before I knew better..
 
Hi Don,

I bought mine along with the Morgan Carbtune. It's a long screwdriver inside of an 8mm socket. Here's the link: http://www.carbtune.co.uk/carbtool.html

carbtool.jpg


ctoolend.jpg


Use it on the vacuum adjustment screws between the carbs. The socket loosens the jam nut, adjust the screw, then tighten the jam nut.

reassembly040410_11.jpg


And of course you know where to use the tool, on the vacuum adjustment screws.

reassembly040410_01-1.jpg


This is the 5mm adapter kit I got from Z1Enterprises.com.

<< Click the picture to go to their sales page.


Thank you for your indulgence,

BassCliff

Cliff where is your choke mechanism?

I don't see it anywhere. On my 650 setup the parts on the long choke shaft that passes through all the carbs and pulls the choke plungers out is directly above these vacuum screws and locknuts. I don't see this on yours. Did you remove the choke mechanism?

Thanks
 
The choke is in the last picture of the carbs. It is connected to the choke rod. Different setup than the choke tube/throttle bracket all in one.
 
Cliff where is your choke mechanism?

I don't see it anywhere. On my 650 setup the parts on the long choke shaft that passes through all the carbs and pulls the choke plungers out is directly above these vacuum screws and locknuts. I don't see this on yours. Did you remove the choke mechanism?

Thanks

Hi Don,

That rod above the vacuum screw, with the 90 degree bend, is part of the choke assembly.

reassembly040410_01-1.jpg


Below we are looking at the vacuum adjustment screw between #3 and #4 carbs. Here again, just to the left of the adjustment tool, is the rod that is part of the choke assembly.

reassembly040410_10.jpg


Below you see the throttle cable on the left and the choke cable on the right.

intake_repair26.jpg


On my 850 the throttle linkage assembly is bolted to the top of the #3 carb and the choke assembly is bolted to the top of the #2 carb.

The choke mechanism is all there, no mods. I guess sometimes my pictures don't show everything in the proper perspective. :o

Thank you for your indulgence,

BassCliff
 
Last edited:
Thanks Cliff, Bill. I guess I have a later model setup and it looks a bit different. Good pics Cliff. Very helpful.
 
If it's on the 77 doesn't that use non-CV carbs? If so the adjustments are under the top cap of the carbs. Take the 3(?) phillips screws loose and the adjusting screw and lock nut are there front and center.
 
If it's on the 77 doesn't that use non-CV carbs? If so the adjustments are under the top cap of the carbs. Take the 3(?) phillips screws loose and the adjusting screw and lock nut are there front and center.

Thanks for the reply Ian, but I have a 650 top end and CV carbs on the 550 bottom end with six speed.
 
I have just ordered my carbtool & carbtune

I have just ordered my carbtool & carbtune

BTW Cliff I have just placed an order with Morgan for the Carbtune synchroniser and the Carbtool as well. I also have a petcock problem which I will start a new thread on. Don't want to take too many liberties on someone elses thread.
 
Anyone ever use the brass adapters sold by morgan. They seem nice since you can leave them in permanently.

http://www.carbtune.com/ (second one down)

Hi,

adapbrass.jpg


If those are the same length as the plastic adapters (and from the pictures they look to be the same), they are hard to work with on a hot engine. I guess if you left them there all the time it wouldn't be so bad. But I sync my carbs maybe twice a year when I check the valve clearances. The Z1 kit has longer adapters and are easier to get in and out of a hot engine. And I can use them on my friends' bikes. :)

Thank you for your indulgence,

BassCliff
 
Last edited:
Back
Top