Carb Questions

[rose62]

I got this engine with the kart and I don't have an air cleaner for it. What carb is it? I'm used to the center mount air cleaner and not too familiar with this design. Also, I keep seeing reference to a Tilly carb. I guess that means a Tillitson, right? Is there such available for my 5HP B&S? Thanks.

 

[Sparkwizard]

That looks like a Briggs Pulsa Jet carb. They are good carbs, easy to tune. With an adapter, you can install a Tillotson. They are great once you go through the learning process to get them tuned right. I would keep the original and find a filter for it. Ebay should have some.

 

[rose62]

That looks like a Briggs Pulsa Jet carb. They are good carbs, easy to tune. With an adapter, you can install a Tillotson. They are great once you go through the learning process to get them tuned right. I would keep the original and find a filter for it. Ebay should have some.

One of my main motivations is that with the steel tanks getting so difficult to find, perhaps a remote tank for the Tillitson would be easier to source in the future.

 

[Hellion]

It’s a Briggs fixed-jet Pulsa Jet, not the 'far better' adjustable jet version (usually the kind with a slide choke) but it’s still good, just simplified. The Raptors used a special version of the latter but eliminated the choke and had other enhancements.

The filter you may want for that is the stock one which looks like a clamshell (a top and a bottom) affair or a Big Mac box. It uses a good quality flat “accordion” paper filter with steel mesh backing but personally I prefer an air filter assembly that doesn’t cover so much of the carburetor.

What you can do is use a PVC end cap as an air filter adapter, about 2 or 2.5” diameter and make sure the bottom is perfectly flat by sanding against a plate of glass or tile. Bore a large hole in the center (same diameter as the carb throat), and two holes for the mounting screws. Then you find an air filter that fits the OD of the cap...



Cut your own carb-to-filter gasket from a cereal box.

 

[Hellion]

The stock/factory air cleaner assembly is this:

536​

494279​

CLEANER-AIR | (Rectangular)

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