• 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.

81gs850g restoration problems. help! "newbie"

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

Guest
hello gang. i am new to the site and have been reading all the informative posts. i would like to say thanks to all who participate in helping. i am new to bikes and have a problem tuning my 850 gs carbs. it has a set of 1100 or 1000 carbs on it. anyone have the proper jet sizing for the 850 to run these carbs? also, where would i get them? any info would be greatly appreciated. also my pilots are froze in. how do you get those out? drill? please help.

aloha from hawaii.
 
Dont Drill or Turn them hard!

Dont Drill or Turn them hard!

Don't Drill or Turn them hard! I can't help you with the jetting, but I have gotten frozen pilots out. I have also broken carbs with frozen pilots(junk yard ones for tear down practice luckily). Take every thing else off of them first. spray carb cleaner in them top and bottom. Drip penatrating oil in them. If it pools... Great let it soak. When the oil drains out add some more and let it soak some more. Two or three or four soakings, and they should turn out with no problem. At any rate DON'T turn too hard. The brass will strip fast. And DON'T use any easy out. The throat that the pilot is screwed into will break in a hurry. Then you can throw the body in the trash.
 
Looked it up in my manual:

The GS850GT (US) has Mikuni BS32SS CV carbs, the GS1000GT has BS34SS CV carbs. Jet sizes are the same, except for the idling jets:
GS850GT: 200
GS1000GT: 160

Float heights are also different:
GS850GT: 23-25 mm
GS1000GT: 22.4 mm (+/- 1.0 mm)

These are GT types (1980); I'm not sure if later models had a different jetting. You might try to get the bike running with the carbs you have, ride a couple of miles and read the plugs to see if the mixture is right.
 
thanks for the info gang! it really helps me. however, the jets that are in the bigger carbs do not match up to the 850 carbs at all. i think the mains are 1350 on the 1000 carbs and the mains on the 850 carbs are 115? not sure, but thats what i can read on them. i am looking to buy a set of stock 850 gs carbs if anyone knows of where i can find them. i think this will be easier and faster. the 1000 carbs wont even light up the engine anymore. i think i may have messed them up. ill try the float level again as i think this is where my problem lies.

aloha, jay
 
That's correct: the main jets are 115. It looks like you have some very different carbs...
 
You must log in or register to reply here.
Back
Top