gs750 carb question

[Guest]

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.

[TheCafeKid]

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.

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.

[Steve]

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.

Yep, the 750 had 100 mains, the 1000 had 95.

.

[gsrick]

It's possible.

SSSSSSSSSHHHHHH!

[silverbullet132]

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.

Looking to fit these tires on it after I get it going:

http://www.conti-online.com/generator/www/de/en/continental/motorcycle/themes/motorcycletires/sport_touring/road_attack2/contiroadattack2_en.html

Possible? They have sizes that look quite close.

[TheCafeKid]

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.

[silverbullet132]

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?

[Steve]

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.

.

[silverbullet132]

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.

[GSXR7ED]

Once Again, Good Info

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.

Great points, CafeKid!

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.

.

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




Ed

[Big T]

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.

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

[Kyler]

I'm confused. This thread seems to say that all carbs are interchangable between the 750s. However in this thread (http://www.thegsresources.com/_forum...d.php?t=202451) I was told they are not.

[koolaid_kid]

The carbs came in 2 versions:
76-79 VM carbs
80-on CV carbs

This thread addresses the VM carbs.

[Steve]

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

True enough, but the OP made it take a detour.

Looking to fit these tires on it after I get it going:
http://www.conti-online.com/generator/www/de/en/continental/motorcycle/themes/motorcycletires/sport_touring/road_attack2/contiroadattack2_en.html

.

[GSXR7ED]

I'm all about learning...

True enough, but the OP made it take a detour.





.

So it's cool the OP did a detour.



Ed