• 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.

gs750 carb question

  • Thread starter Thread starter silverbullet132
  • Start date Start date
silverbullet132 said:
according to this, I can fit GS1000 carbs to my gs750:

http://www.oldskoolperformance.com/forum/viewtopic.php?f=9&t=3714

the 750 is a 77-79, what carb boots would i need? stock 750 carbs? bike has a 910 kit in it so i figure the 1000 carbs are my best bet.
Click to expand...

In the US gs1000 carbs were the same as gs750 carbs if you're talking pre 1980.
They just had different sized jets. In fact iirc the 1000 actually had smaller mains stock. Otherwise the throat diameter is the same. You could just rejet your 750 carbs to match.
 
TheCafeKid said:
In the US gs1000 carbs were the same as gs750 carbs if you're talking pre 1980.
They just had different sized jets. In fact iirc the 1000 actually had smaller mains stock. Otherwise the throat diameter is the same. You could just rejet your 750 carbs to match.
Click to expand...
Yep, the 750 had 100 mains, the 1000 had 95. :-k

.
 
It's possible.

It's possible.

SSSSSSSSSHHHHHH!:-$
DSC01977.jpg
 
You shouldn't fit radial tires to those rims as they don't have the lip/bead support to deal with them. All GS models used bias ply tires and many needed tubes in the rims as well. The general consensus as far as the stickiest sport type tire that is recommended for the stock wheels are Perelli sport demons.
You also need to keep in mind that for most of these models rear wheel widths, a 130 wide tire is about the max you can go without pinching the tire out of shape.
 
In that case I am open to swapping the swingarm and front end. I know GSXR1100 front ends fit, and gs1100 swingarms, but what rim assembly would be used with the swingarm to fit a 160-180 tire? (if possible)

Dual shocks would be retained.

Ps: Can GS1000 80-81 shocks fit a 77-79 750?
 
Simply adding tire width will not make it handle any better. Yes, I see that you are willing to change swingarm and wheels to better support a wider tire, but you can already drag hardware with the stock "skinny" tires, why do you think that wider tires will help the handling any?

If you want the wider tires for "the look", then you are looking at the wrong bike, or you need to be prepared to spend a LOT of money to adapt the bike to the tire.

.
 
I see what you are saying, it is partially for looks and mostly because I am biased to the Dunlop Roadsmart 2's (have them on my 98 and 00 vfr's).

Eventually it might end up being a weekend rider/show bike, so we will see. It might be left with the stock swingarm but I would at least like cartridge forks.
 
Once Again, Good Info

Once Again, Good Info

TheCafeKid said:
You shouldn't fit radial tires to those rims as they don't have the lip/bead support to deal with them. All GS models used bias ply tires and many needed tubes in the rims as well. The general consensus as far as the stickiest sport type tire that is recommended for the stock wheels are Perelli sport demons.
You also need to keep in mind that for most of these models rear wheel widths, a 130 wide tire is about the max you can go without pinching the tire out of shape.
Click to expand...

Great points, CafeKid!

Steve said:
Simply adding tire width will not make it handle any better. Yes, I see that you are willing to change swingarm and wheels to better support a wider tire, but you can already drag hardware with the stock "skinny" tires, why do you think that wider tires will help the handling any?

If you want the wider tires for "the look", then you are looking at the wrong bike, or you need to be prepared to spend a LOT of money to adapt the bike to the tire.

.
Click to expand...

More valuable information. This thread was about carbs but I'll put the tire info into my memory bank.




Ed
 
silverbullet132 said:
Ah thanks, what carb setup would you guys suggest?

Currently the bike does not even have carbs, it has been sitting since 98. Uncle said it has a 910 kit (at this point i think it is an 850 head with bore kit), and a 4-2-1 V&H pipe.
Click to expand...

The standard 26 VM will work
28mm VM from a Z1 is an upgrade with its pumper
29mm smoothbores are the period upgrade
33mm smoothbores are a later upgrade

Expect to pay $100 for a set of 26s needing cleaning to $7-900 for a good set of 29s , ready to go. The other sizes fall in between those costs
 
The carbs came in 2 versions:
76-79 VM carbs
80-on CV carbs

This thread addresses the VM carbs.
 
silverbullet132 said:
I see what you are saying, it is partially for looks and mostly because I am biased to the Dunlop Roadsmart 2's (have them on my 98 and 00 vfr's).

Eventually it might end up being a weekend rider/show bike, so we will see. It might be left with the stock swingarm but I would at least like cartridge forks.
Click to expand...

If you don't have them already, 37mm forks from the larger displacement bikes, or from the later 750s and up (after 81, the 750s had 37mm forks as well) is the easiest way to get close to a cartridge fork. You'd simply have to swap out what is currently on your bike, triple tree and all (to assure you retain correct offset I'd try to find a set of forks that comes complete) for a set of 37mm forks. The steering mast bearings will also have to be changed to accommodate a larger diameter steering stem most likely. There are now a couple of companies that make cartridge emulators for 37mm forks. These are adjustable, drop in cartridge valves that will take the place of the simple damper rod for controlling damping speed. At this point I believe that the valves available only control rebound damping, while oil weight will control compression damping.

There are other options as well, such as a set of 41mm first gen gsxr forks, or even Bandit 1200 forks (same length as GS forks, but the steering stem needs to be either machined down of pressed out and a GS stem installed as it is much too long) but this can open a veritable Pandoras Box of other issues that will have to be addressed to make the bike safe and in some states, pass an inspection. Obviously the larger front rim will run a radial type tire and its not a good idea to mix types. You'll also have to adjust the steering stops, as well as deal with the rear end (using a modern wheel, and brake assembly, which will require custom spacers and such to keep the chain offset correct etc)

If some well, these mods look fantastic! But if done wrong these mods can make the bike an ill handling death trap.

Lots of options for you though, and if you do a thread search, there's also lots of "been there, done that, here's what NOT to do" type information as well :)
Good luck and welcome!
 
You must log in or register to reply here.
Back
Top