Keihin fcr 39 flat slides

Hey my buddy gave me a set of Keihin fcr 39 flats i wanna mount them on my kawasaki kz 750 e. I tried to mount them but the 2 end carbs are offset about a quarter/in. And advice or suggestions on taking my next step to mount these SOBS Thanks, Andy

Holy crapola! 39's on a 750? That's a ton of carb... don't have your answer, but I'm curious how it runs when you're done.

Well yeah i thought that too but i got them i might as well slap em on. :whistle:

Do you have pics of the actual rack of carbs? I don't think there are any members here running a set of FCR's. I'm plan to get a set of 35's for my 1000, but thats many months down the road. I'm sure the centerline of the carbs is movable~ but there are fuel tees, throttle and choke linkages and the bracket that ties all the carbs together. Its tough to tell without seeing them.....

It's non moveable. That's my delema im sure if i think about hard enough i can make it work idk here's some pics

Apparently you can rerack them this is the info i found searching for hours...
The tubes used for spacing the bodies are easily modified and I also found the bracket that connects the slide to the crank has a slotted hole.. so just loosen the bolt and move the slide to the required position..
more difficult proved the modification of the T-connectors though.. bowl vent T's: just loose 2 of the 4 seals.. fuel supply T's: replace for less wide ones

Now that's a good friend

You have a couple of options that are viable.

a] Sell the 39's and get a rack of CRS29's. Much more appropriate for your bike.
b] Sell the 750 and get an already built 1327cc KZ on which to use the 39's and go racing

I think Larry's onto something with the CR29 route. Those should be good for a nice hot 810cc build too...

porchev914 wrote: Do you have pics of the actual rack of carbs? I don't think there are any members here running a set of FCR's. I'm plan to get a set of 35's for my 1000, but thats many months down the road. I'm sure the centerline of the carbs is movable~ but there are fuel tees, throttle and choke linkages and the bracket that ties all the carbs together. Its tough to tell without seeing them.....

Adam, these Yoshimura FCRs would look pretty sweet. Just sayin... '

shop.yoshimura-jp.com/en/product/syousai.php?id=12446

LarryC wrote: Now that's a good friend

You have a couple of options that are viable.

a] Sell the 39's and get a rack of CRS29's. Much more appropriate for your bike.
b] Sell the 750 and get an already built 1327cc KZ on which to use the 39's and go racing

Good post LarryC.

Andy, 39s are way too much carb on your 750. You would be better off with the proper carbs set up for your bike than to put a ton of time into mounting and tuning these carbs on your engine.
34RS carbs would be max on the 750 for any decent street riding. Since we don't know how you ride, we're guessing you have a street bike. A drag racer can use a whole different set-up.
And I'll agree, that some good friend

And one more thing, FCRs don't have a choke circuit.

Andy, did you ever find a set of carbs for your bike?

the pic u posted looks like a down draft carb. side draft r the ones u need.
what bike r they off? do they have a choke?