• 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 rebuild kits for BS series

  • Thread starter Thread starter KPottorff
  • Start date Start date
K

KPottorff

Guest
Does anyone know if Suzuki put any other type of carburetor than the BS34 on the '78 GS400X? Motor and frame numbers put this bike in the correct year for what the title describes.
My bike does not have the front disc brake. From what I can tell, this was the most basic model offered. I wondered if it may be an import?
I'm trying to find a rebuild kit if possible. The o-rings for the idle adjust screws are shot and I think they are letting air through the threads. The bike idled fine before I cleaned the carbs so the rings must have had a set that I broke when I took them apart for cleaning.
Any ideas? I got the o-ring kit from Mr. Barr but none of the rings are correct for this carburetor.
 
If it is a 78 is does not have the BS carbs but the VM series, BS is from 80 onwards.
 
Aren't the VM types constructed with the throttle cables directly attached to the slide in the carb?
These carbs have the cables attached to a butterfly valve with a sliding cylinder actuated by vacuum in the carb. I understand these to be the constant velocity (CV) type.
 
Not true!!!! some of the pre 80 small twins had carbs simillar to BS type carbs check on bikebandit.com & look up some of the small Kawasiki bikes or contact
www.sudco.com maybe they can help
 
If you'd like, I can mail you a pair of the O-rings that fit the VM style air screws. I still have your address. If these don't fit, I really don't know what to tell ya...
 
For robertbarr:
Thanks for the offer. Contact me at my email address. Would you like me to return the original set for someone who really could use them?

For everyone else:
I've looked over the parts diagrams for the carb at bikebandit and it looks very much like what I've got. Don't see any rebuild kits for it there. Just looked at sudco with same results.
I'm beginning to suspect that I have a set of mystery carbs. I haven't seen any marks on them other that the "Mikuni Ltd." on top of the vacuum cover.
I have seen kits for Mikunis put on Yamaha XS650 for the same year. But, the kits have what are called 7 and 8 hole gaskets for the choke body. These have a 6 hole gasket.
I'll keep looking around. I'm used to this - I have a pair of air-cooled VWs and wrench on my brother's and mother's VWs. When original parts can't be found, replace with modern parts. I may get a set of modern carbs if it comes down to it.
 
You must log in or register to reply here.
Back
Top