Hi, I've got a go kart with a Briggs and Stratton 132432-0227-01 33 year old engine on it, an it's got an old updraft carb on it. Does anyone know of an aftermarket carb I could stick on there? Maybe a sidedraft?
That is pretty cool engine... #13 I reckon.... That is an updraft carb.... similar to a Ford model A type carb......
One could go Bronda route with a custom intake adapter.... but the gov wont be able to be fitted as it a completely different type of carb... However Jetting can be tailored much easier...
An Idea...
If you are planning on using a billet rod and flywheel you might be able to use a 22mm Mikiuni carb with a custom adapter (two pieces of flat steel and an inch or two of steel tubing) and remove the governor. A Mikuni doesn't need a throttle mechanism. The cable directly connects to the slide.
There's nothing really wrong with the updraft, but I would also think that a sidedraft would be easier to start. Plus, when I try to start the engine and crank it a lot, the fuel starts leaking past the choke. From there it drips onto the throttle system, which I can't imagine is good.
Well, it's not really a PROBLEM that's making me want to have an aftermarket carb, but I could probably find some aftermarket carb with more features than mine. Nothing really wrong with the current one.
The issue that I like to point out is that when you put on an aftermarket carb, or even a differently configured stock carburetor from a different engine, your governor linkage will no longer work properly, and will require modifications. Sometimes it's just not possible to make it work at all. So if you're worried about the cart getting too fast, rebuilding the stock carb may be a better option
I've already rebuilt the stock carb, and let me point out some problems it had: carb float had a big DENT in it obviously caused by brute force, the carburetor body gasket was MISSING and or dissolved, and the gasket between the little elbow shaped connector was so hard I actually broke it in half!. Fixed all the carb problems already in short. I'm actually not sure if my engine HAS a governor. Here's a link to a parts lookup https://outdoorpowerdirect.com/pages/partslookup#
Just a completely hypothetical idea, but I might someday put in beefier crankshaft and camshaft hardware as well as a stronger and lighter connecting rod. Then disable the governor and rev it up like Schumacher!