• 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.

Please help-Can't find carb rebuild kit for 78' GS400

  • Thread starter Thread starter k_garton_76
  • Start date Start date
Can you get by with just new orings? Or do you have damaged/missing parts?
 
I've been taking the carbs on and off a few times trying to get them clean and keep them clean. I'm not missing any parts. But I've decided to be thorough this time and clean and seal the tank, fix the petcock and rebuild the carb. If you think I can get by without rebuilding the carb and just using the o-rings please let me know and I'll just do that. Thanks for the help.

Ken
 
k_garton_76 said:
I've been taking the carbs on and off a few times trying to get them clean and keep them clean. I'm not missing any parts. But I've decided to be thorough this time and clean and seal the tank, fix the petcock and rebuild the carb. If you think I can get by without rebuilding the carb and just using the o-rings please let me know and I'll just do that. Thanks for the help.

Ken
Click to expand...

Contact Robert Barr www.cycleorings.com and see if he has an oring kit for your bike. Typically, the internal parts of a carb don't wear out, but one should replace the orings and gaskets when taking them apart and cleaning them.
 
I looked around when I started my rebuild job and did not find any kits for the BS34's on the GS400.

I polished the float valve seats with a bit of rag on a drill bit & brasso, they don't leak. The screens on the top of the valves were still OK, just needed cleaning. There is a guy who has been trying to sell a pair of valves on E-bay for months, I think they are still available.

The air screw O-rings were shot, I found some at a hardware store that fit.

The float bowl gaskets on mine were OK, but I believe that many float bowl gaskets from various Mikuni carbs (BS series) will fit, also available on E-bay. If yours don't leak, then they are OK.

I had a torn slide diaphragm, I bought a triplet of carbs off a Yamaha XS750 (BS34, with some minor differences) and the slides fit. I also used one of the needle jet O-rings out of the yamaha carbs, one of mine had been munged on installation, it seems.

The float bowl drain plugs are unusual, they are very large, but some O-rings that fit were also available at a HW store - just make sure you get butyl rubber or viton O-rings, so they will withstand the gasoline.


Hope some of this info helps.
 
All the information I've got is a great help. Thanks. I ordered the standard bs o-ring set. I hope this will work.

Ken
 
The float bowl gaskets are available from z1enterprises, if you need them.
 
Robert Barr from the O-Ring site said to ask the experts here if the o-ring kit will fit the carbs on my 1978 GS400. Please, let me know. Thanks.
Ken
 
I've got one website for ya:

www.wgcarbs.com

He rebuilt the Carbs on the GS1000 and I have to say it is the best money I have spent on that bike since we started working on it. The bike runs like it's fuel injected. Hit the starter and it fires right up with no problems what so ever. I was amazed how good the carbs looked. They looked liek they just came off a bike that rolled off the factory floor probably cleaner than that even.
 
Hey devil dog. I was discharged from the Corps about five years ago. I'm in college now, so I'm on a super-tight budget. Going to have to do it myself.
 
You must log in or register to reply here.
Back
Top