carb swap/ HELP!!!

[cbird]

You can get Mikuni flatslides at carbparts.com, they are about $650 as I recall. Carburetor Parts Warehouse is the place, it is a good outfit.

[coletrain777]

I talked to some of the guys at merriam cycle today and they instructed me taht the flatslides are mainly a upper rpm type carb. They said that they will work great at WOT but can be a pain in the butt for everyday driving around. How about any stock carbs (carbs that came stock on another bike)? I would think that if the carbs were 34mm or 36mm that they could be made to work fairly easily. You might have to make a different bracket for the carb spacing but that can be done easily enough. Any other ideas? Thanks guys, you're great.

[chevy45412001]

spacing

along with making new spacer would you have to rig up something so all the carbs worked together? (i dont know what the tech term is)

[xswilly]

if a person were to use 1 big carb, with a 1 into 4 manifold
what carb would he use.
I mean making a 1 into 4 would not be hard
use your old intake boots,
get some tubing and weld something up
watch monster garage or american chopper
these guys do it all the time
manifold would be easy to make, selecting the right carb would be tough, but no more matching the carbs to each other
hummm

[rover]

Very small 4 cyl car carb, hopefully w/2 bbl progressive, been thinking of it. Are there any Geo metros with carbs, or all fuel injected? It would have to be a non-electronic carb.

[mitch]

1 carb

If you go to the goldwing site, i forget the addy, they have a single carb replacement availble aftermarket, including the manifold. It is for a wing of coarse but i wonder what carb its using? .....................MITCH

[coletrain777]

This is good stuff guys, this is what I am talking about. I don't know if it's just me but I have never desired to keep anything normal or stock on any vehicle or bike (Heck, I am even giving my 8hp snapper mower a tricked out flamed paint job using house of color pagan candy and green flames). Making a 4 into 1 one or even a 4 into 2 manifold would be easy and very trick. I am in the process of building a honda 750 chop and there is a site out there that makes a trick 4 into 2 manifold and carb setup that looks awesome, and they say it is a vast improvement in performance. Let's keep coming up with ideas and then maybe one of us could give this stuff a try. Keep it coming

[rover]

Where is this site? I am all fired up

[CA.XSer]

Is this the site?

http://www.cycleinnovations.com

[coletrain777]

That goldwing sit is pretty neat. I wonder how hard it would be to make that setup for an 1100. I wonder what jetting and carb was used etc.. this would be a neat idea. Anymore ideas (tested or untested)? Someone here is goung to build one trick setup after being motivated by the discussion. Aside from all of that I wan't to wish everyone a happy easter!

[conrad]

iv'e been toying with this idea myself. i don't think finding\tuning a single carb would bee terribly difficult, just one from a simillar displacement motor, aotomotive or bike( i was thinking s&s carb for a 1200cc harley, but that's a pricey carb). the other way one could figure it is to determine the CFM (cubic feet per minute) of the stock carbs and multiply by four, as many auto carbs are rated by cfm. holley made many small carbs for VW engines, i believe some were 1200cc. the carbs are out there.
the tricky part about a manifold is getting it to flow evenly, so you don't have one cyl. running to lean.

[ratbyk]

Mix & Match

Swapping carburetors from different makes/models is very do-able. Making a manifold that will feed all cyls evenly is the trick. Compound that by the limited space you have to work with at the back of the XS motor could prove to be a challenge. Getting a longer runner manifold/carburetor off and on could be tricky.
The manifold would have to have long runners to try and achieve balance of fuel charge to each cylinder.
I once fit a 2" SU from an XKE 3.4 liter onto a 1200 cc Mini Cooper engine that worked perfectly right from the start. The trick was that the carb was already jetted and flowed to feed the mini's displacement. The Jag used 3 of these SU's so the displacement they were feeding was about the same.
Again I had a 2.6 German Ford Capri with a crap carburetor on it. I made up an adapter and fit a 2 barrel Rochester from a 283 Chev to it. Once again lucky. Other than setting the idle and the choke I never touched that carb again. Ran the car at least 3-4 years more after that. It went like a train.
Anything is possible but why? Make the existing carbs on your XS work right and things are good.
Ken/Sooke

[fusionking]

I once put a Carter 2 bbl.off a 318 Dodge on a homemade intake that I built for my "71 MGB with a 1600!
It ran like stink!!!!
Anybody got any sidedraft Webers layin' around???

[ratbyk]

Weber's

I had both a 65 and 67 MGB's that I put 45mm Weber side draughts on. Marginal increase in power over 2- 1 1/2" SU's. But the sound out of those Weber's under acceleration was fantastic.
Also have owned many Mini's and Mini Cooper S's that I chopped back into the firewall/instrument cluster area on and fit 45mm Weber's.
I always used 45mm Weber's on the Sprites and MG Midgets that I raced.
Just remembered, I once fit 54 mm dual throat Weber down draught on a 1300cc Mini Cooper. It stuck up through the hood right in front of the windshield. It was on a Mini Stock that I raced on short tracks around southern Ont and upstate NY. Once and awhile it would back fire out through the carb before the engine was well warmed up. Spectacular at night, with this sudden flash of flame and then the car took like bat out of hell. The car was a crowed favorite at most of the tracks I ran at. It was not to popular with my competition. At one point it won 26 races straight between heats, qualifiers and features.
No more Weber's. All sold off over the years. Wish I had some of that equipment now. With the rise in popularity of vintage racing that trick stuff is worth a fortune now.
Ken/Sooke

[Geezer]

I have a set of Kawasaki Z1R carbs that I'd like to try on one of my XS11s. I've never liked CV carbs and it's either these of FI (but not soon.) These are a way down the road rainy day project.

Geezer