Topic: UNIVERSAL Carburetor

[geosvald]

Has anyone ever used any carbs other than the originals? Anyone seen a kit that would allow you to set up the spread of the carbs to match whatever engine is being used? By the way my project is a 1978 CB550K.

[kaceyf2]

seen a 2 and a half inch Su off a land rover on a home made inlet tract, that worked well, I have the specs in a magazine, I kept it just for an occasion like this!
hope that helps a little, people have fitted mikuni smoothbores as well with no probs, after initial set up. And i am sure plenty of others.

[dusterdude]

kacey,how bout the specs or pics

[mrbreeze]

Wouldn't it be cool to have single 4 barrel carb like a Q jet on a Chevy? Spread bore.....big ass secondaries...give it the onion and take off like you just hit the nitrous? Yeah....I know....it's a dream but hey!!...It's my dream and besides....who cares for taking that rack down everytime you need to clean or adjust?

[geosvald]

I have seen a set of carbs that look like you can set it up to match the manifold and probably drill your own holes for the butterflies and the throttle shafts. Then I guess  you'd have to make your own fuel pipes. Of course I'd be ok with that too if it could be done for less than an arm and that ...yeah.

[cb(r)]

here is a dual carb set up for a 750.  I have heard of a single 4 barrel carb set up but have never actually seen one for the cb.

http://www.cyclexchange.net/Carb%20System%20Comp%20Page.htm

hopefully the site shows up

[dusterdude]

that cycle exchange deal looks pretty good,but a single setup would be the bees knees.

[mylittleho]

How about this.. a single barrel weber carb.. I had one of these bad boys on my old 2.0L Mitsubishi pickup



Don't know how you would adapt it to the motorcycle though.. How would you make sure all cylinders got fed properly?

http://cgi.ebay.com/ebaymotors/Weber-Carb-Kit-Mighty-Max-Montero-Dodge-D50-Truck-B2600_W0QQcmdZViewItemQQcategoryZ33550QQitemZ8049369185QQrdZ1QQsspagenameZWDVW

also how will a automotive carb deal with the turns of a motorcycle?

I'd love to see some VW weber carbs retrofitted.. that would be the #$%*..

[amattel]

Here's a solex carb setup for a 750 that recently sold on ebay.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=4616728800&sspagename=STRK%3AMEWA%3AIT

Adam

[Kelvin8]

Twin side draft Webers would be nice. Equal length intake runners, plenum onto which the carbs are mounted.

[byidesign]

On other than originals,I made a set of aluminum offset adaptors, so you could put the
   older 77-78{pre CV } carbs onto the later 1980 and up heads on CB650's--CB750's

      {intake spread is different} so they could be slid on using the 1980and up
         rubber boots, and as the pre CV carbs are shorter, could still use an airbox.
        off the older model bike to match the carb intake.
     the   bike{ cb750c,  } still running great 3 yrs later ,he just didn't like Cv carbs,
             and didn't want to play with the heads.
                     Bruce
             

[Jay B]

S&S Super E carbs (one or two) would work great for this if you could get a manifold figured out. I had one on an old Shovelhead, they are very simple, easy to tune. They have an adjustable accel pump. It was a huge improvement over the Keihin that was on there.

[Bob Wessner]

they are very simple, easy to tune.

Ah, music to my ears, 

[mlinder]

here is a dual carb set up for a 750.  I have heard of a single 4 barrel carb set up but have never actually seen one for the cb.

http://www.cyclexchange.net/Carb%20System%20Comp%20Page.htm

hopefully the site shows up

That thing is really sexy. It begs the question though, if one were to fabricate the manifolds, you could use any appropriate carbs in dual configuration, right?

/edit It appears those carbs are 110-120ish USD, so with the pre-jetting, the manifolds, the throttle cable, and the velocity stacks (not to mention the pretesting and fabrication stuff) already done, 500 bucks ain't so bad.

[dusterdude]

jay,agreed,the super e is an excellent carb,i have on the pan.mlinder,the dual mikunis are a good deal too

[geosvald]

If you make your own manifolds, i guess they don't have to be straight. Think about a big V8 they have to put some bends in to make all the tubes equal length if it only uses one carb. If you have good atomization and good flow, maybe downdrafts would work.

[Stevearino]

Hell, why stop there.  I once saw pictures of a blown GL1100!  It was referred to as a pavement wrinkler.