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gsxr carb confusion

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Katguy . . . What kind of hp is your Katana making?
Sounds like a killer setup . . . any problems with hot start ups?
Stright cut gears or stock? Are you running filters or just stacks?

Had never heard of the Boyensen Quick Shot Pump Cover
Found a few on ebay for around $75 or so
Seems like a must have item
 
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Well I got my Keihin carbs today and guess what???????? they DON'T! fit.

I checked the model number off the box and they fit 88-92 gsxr 1100's. The spacing between 2&3 is 6mm out. that is a mile in standard measurement. OH yey, and they are NOT!! adjustable as someone had mentioned.

Any body want an 1150.00 set if carbs, filter adapters and K&N filters?
 
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I just got a used set off Dragbike.com for an oil-cooled suzuki and they bolted right up to my GS1150. The jetting is even close enough to work on my GS for now. I also always thought the racks were adjustable.

MVC-006F-1.jpg


http://sell.dragbike.com/detail.asp?id=1555

I did have to rotate my #3 carb intake boot slightly counter-clockwise.

The carbs I purchased were from a 1216 piston kit so that should make it a 1127 motor which is 89-92. Puzzled as to what went wrong with your purchase. Sudco list 39mm FCR's for the GS1150's.
 
Sudco don't have any in stock for the gs's. I was told they are discontinued and not available. that is why I was inquiring about the gsxr spacing as I was told they are the same but that myth has been settled.

what did you do for a throttle? my new push/pull APE one won't work either.
 
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Dont see how yours did'nt work. I've put oil-cooled GSXR CV carbs on GS's before. I've used oil cooled FCR's twice before in the past on GS's. Have you tried rotating your intake boots around slightly, that will take up some of the slack?
 
how does the throttle cables screw intot he carbs? there are not threads on my carb bracket to do so.

I haven't tried the boot manuver as they are matched to my ported head and intakes.

I took my measurements from the intakes and the 33 smoothbores I have. the center two carbs are 6mm narrower that the gs carbs. If I had been told I needed to futz witht the boots I woudn't have bought them. If the boots are off that can lead to air leaks as the inner flange of the boot needs to line up perfectly with the carb intake groove. I can't see that working that well with the amount of outnessssss.

Thanks for the help and info though dude.

I would still like to know how you connected the cable ends to the carbs??
 
The longest and widest part of your throttle cable (on the carb end) will rest on the TOP portion of the FCR throttle bracket(the WIDEST part of the tread will CATCH and sit on the mount) then hold it in place with the screw you loosened

THERE IS NO THREAD TO SCREW INTO. IT IS MORE LIKE A HOLDING BRACKET WITH ONE OF THE ORIGINAL THROTTLE SCREWS HOLDING IT IN PLACE FROM THE BOTTOM.

t1.jpg


I would send a pic but I'm at work . . . .

ONE BRACKET IS FOR THE PUSH . . . THE OTHER SIDE IS FOR THE PULL . . . .


Unscrew the screw on the bottom portion of you throttle cable, then rest the threaded part on top of the FCR throttle mount - Then thread your screw against the bottom of the FCR mount. (Hope I have'nt confused you) You should have a screw on the end of your throttle cable that can be unscrewed all the way out.
 
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IF you had your original boots instead of the ones pictured you could rotate them and they would work. The original boots have a curve to them that will help give you enough slack to pop the FCR in place. You just have a 'stright shot' into your intake. I still believe the FCR's are adjustable, and feel as tho you should contact www.sudco.com as to how (I've never done it before, but it seems like I have read it somewhere).

k2.jpg


That is pretty much how my #3 looked before I rotated my boots around. I may have even rotated #2 around a tad as well to 'split the difference' between the two. Do you still have your original boots?
 
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yeh, I get ya. use the locking nuts to pinch the threaded end in the fcr bracket. That can't be the recomended way to do it even if it works. It looks to me that there is a plug of some sort that slides into that area that would hold the cables.

Oen other thing??? I crashed using just a pull cable on some smoothbores and these puppies generate much more vacume. I wouldn't ride till you get the right set up dude.


thanks man. I am going to send these back though.
 
Its been working for years . . . . . .
The widest part of the cable threading will rest on the top portion of the FCR mount

Sorry your application was unsuccessful . . . . .

I'll take your advice on the push / pull and hold off till the Busa Throttle arrives - Thanks
 
If I do find a set that fits I think I will make up a couple brackets to and bottom to hold the cables secure. LIke this X2 and pinch it all between the existing bracket.

u.jpg
 
Just curious . . . you cant adjust your intakes at all?
I mean are they still slightly curved
Its not like I turned mine 180 degrees or anything, maybe the equivalent to 5 degrees . . . .
My stock ones are slotted plus they have clamps to secure them
 
yes my boots will rotate but they are off quite a bit yes?? My concern is one of flow interuption and sealing. I spent a lot of money to get the air flow as smooth as possible into the head and I can't see how the flanges and grooves will line up properly given the distance difference.
IF any air is getting by the intakes it will never run as good as it can. I run my bike HARRRRRD and need it to run perfect or I won't be happy happy.
 
I'll tell ya mate,

For the most expensive carbs on the market I am not impressed that you have to buy air filter adapters (over 100.00) and that throttle set up is non-sense for race carbs. Oh and I understand you need to get a new excelerator pump cover cuz the one on the carbs makes them bogggggggggggggg. another 75.00 please!!!!!!!!!!!!!!!

I must be missin something...............
 
I understand the carbs have left a bad taste in you mouth . . . .
But I would'nt trade my FCR's for anything . . . . .

Well maybe some stock 40 CV's if they would fit . . . . :)
Keep the carbs and sell me your BIKE ! ! ! !

BTW the accelerator pump is adjustable . . . but nobody like to adjust it
Boysen has found a nice market . . . .

I see we could go on and on . . . . . . .
Really hate they did'nt meet your expectations . . . .
 
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I'll just keep my 33 smoothbores till I can find a set of 39's for a GS. I still want a set.......I have calmed down a little now........
 
Rob, that throttle cable bracket is remarkably similar to what they are like on the older VM carbs that were on the 70's GS bikes.

DCP_8351.jpg

DCP_8352.jpg
 
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