• 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.

77 gs750 jet size

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
Got a 77 gs750 that I can't find a decent air box for. When I got it it had some crappy pods w/ stock jets. Looking at going with a decent set of pods w/ stock exhaust. Anyone have any recommendations on the jets sizes/needle settings for this set-up?
 
Production date on the steering stem? Which pilot jets did you find in them? 22.5's or 27.5's? Where are you located and what altitude range do you plan to ride in?
 
The reason he is asking is because there were somewhat major differences in jetting with the first couple years of the 750.

It would be nice to know which ones you are starting with before making any recommendations for changing them.

As a 'rule of thumb', however, using decent pods (APE or K&N), you might add 4-6 sizes to your mains. Your pilot jets should not need to be changed, but add about 1/4 turn to the pilot fuel screw (the one on the bottom of the carb) and about 1/2 turn to the pilot air screw (the one on the side of the carb). Those are assuming that the screws are in their stock positions. If you are starting from 'scratch', the fuel screws might be in the range of 1 to 1 1/4 turns, the air screws would be double that.

.
 
I'll let you know the date of manufacture/pilot jets when I get back to the house. I'm in Charlotte, NC which is around 750ft above sea level.
 
I'm not sure of the production date as the sticker has been removed. The pilot jet is a 15 and the carbs are marked as "45040"
 
95's but they don't have the mikuni stamp so they must have been changed at some point
 
GS_carb_specs_v1.3.JPG
 
I'll add my settings might help you out


1977 gs750
ape podfilters
4-1 free flowing open baffle exhaust
main jet 117.5
pilot jet 15 (standard)
needle 1 notch up from full rich
fuel screws 1 full turn out from lightly seated
air screws 2.25 out
sea level
 
You must log in or register to reply here.
Back
Top