SUZUKI GSXR750 Carbs Mikuni

[79XS11F]

Originally posted by mro
can try lowering fuel level in bowl couple mm.
(raise float height when bowls off and carbs upside down)
_________
course could try and find a set of these




mro

And what are those ?
Rob

[jimg1au]

sling shot gsxr 750

hi
1988 1989 were the years gsxr 750 were short stroke motors ie over square.they had the name of sling shot.kevin s won the daytona or ama champ that year with one.a work mate has one sitting in his back yard not covered for 10 years only 12000 klm from new.thet were very quick and have an agressive ride position
cheers
jimg

[mro]

originally posted by Rob
And what are those ?

part of project #3.
Supposed to be very tweak/adjustable flat side mikuni racing carbs.
Not the BS34's CVC's that are stock on the XS. Have not had time to tinker with yet.


mro

[underdog57]

36 MM Carbs Score

Just scored a set of 36 mm slingshot's ...
will post photo's when I get them ...

ok , I have enough carburetors ...

Now to get a set running or two or three ...

Bob

[79XS11F]

Originally posted by mro


part of project #3.
Supposed to be very tweak/adjustable flat side mikuni racing carbs.
Not the BS34's CVC's that are stock on the XS. Have not had time to tinker with yet.


mro

YES I would in deed like to have a set of those
Rob

[79XS11F]

Re: 36 MM Carbs Score

Originally posted by underdog57
Just scored a set of 36 mm slingshot's ...
will post photo's when I get them ...

ok , I have enough carburetors ...

Now to get a set running or two or three ...

Bob

When you receive your carbs could you post some model # or other method to truly ID them for others like myself who may want to go that route.
Rob

[underdog57]

Carb id

I need to find the years for parts too . My local dealer is Yamaha and Suzuki so hope they can help ...

Will post all I can , but I would say a few already know these carbs pretty good ...
welcome them to chime in !!!

Bob

[xschop]

advance

So, have you guys figured out the vacuum advance problem if switching carbs... I want a set, would be easier than doing the big bore kit if they do increase horses...thanks for you all's guinea pigging....chop

[underdog57]

advance hook up

From what I read so far , you do not lose performance with no advance . Gas milage should suffer ...

I might make an orifice to slow the vacuum down ....
Will look into it ...

Bob

[79XS11F]

You should be able to hook the vac advance up to one of the carb boots at the engine but would have to put a valve on it to reduce the vacuum to the right level for the advance unit. You could start with the valve closed and then open it slowly until the right total advance is achieved at the right RPM from the manual. I think it's somewhere around 5000 RPM that the unit should be fully advanced.
Rob

[underdog57]

Vacuum advance control

What keeps the vacuum down on the original carbs???
Must be a certain orifice ??
That is a good idea though .....

Bob

[79XS11F]

Yes I would guess that the actual hole size on carb #2 is somewhat smaller then what is there to accept the hose. I do know that if you hook up to the carb boot the advance will just bounce back and forth from full advance to no advance because that's the way it was improperly hooked up when I got my bike.
Rob

[xschop]

presto

From the U.K. thread I read this is the conclusion I came to.....So what kind of horses can you get out of this setup? And will i have to change exhaust pipes, I like my 4 to 2's.....

[pggg]

Hose connecter is a 5mm tube pressed into a 5mm hole on the outside carb body, but the vacuum hole is a tiny half mm, positioned right on a notch in the butterfly in carb 2, where it's partly covered at idle.

[underdog57]

Quote from PGGG
Hose connecter is a 5mm tube pressed into a 5mm hole on the outside carb body, but the vacuum hole is a tiny half mm, positioned right on a notch in the butterfly in carb 2, where it's partly covered at idle.

Bob writes:
So will be a trick to get the advance to work , Wonder what might be the simplist way to get it to do its job . Or just omit it ??
Interesting to know how much gas milage will suffer ??

Bob