Carb recommendations for briggs Flathead

[Kentucky Boy]

I've got a 22mm Keihin carb on my 5hp Briggs flathead. I'm also using a Pulse fuel pump. The brass overflow tube in the bowl is cracked and leaks despite a repair with JB weld. All the gaskets need replacing also. It's cheaper and easier to just buy a new carb. I found this one in the below pic. My question is, is there a better 22mm carb to use specifically with a fuel pump? I read that carbs used with a fuel pump have different size float valves or float valve seats. What carb should I buy? Thanks.

 

[Hellion]

I wish I knew more about Flathead carburetor options. All I seem to see and the first results I get are the stock carbs used for WKA racing and what-not.

Then there's stuff like Tillotson, Walbro and Mikuni if you are interested in spending more money.

 

[Joe-405]

Tillotson is your best bet for a flathead.

 

[Kentucky Boy]

I'll have to check out the Tillotsons.

 

[bob58o]

I've heard good things about Tillotson. On the engine analyzer simulator demo, it allowed you to choose the specs from the 5HP Tillotson Carb.

 

[Kentucky Boy]

Will the Tillotson work ok with a fuel pump?

So I was looking at my carb up close and noticed that a small number 26 is stamped into the opening mouth of the thing. Does this mean it is a 26mm carb? I measured the inner diameter of the part that faces the engine and it was 22mm. In the pic you can see the number 26?

 

[bob58o]

22mm Carb Inner Diam??
26mm Air filter outlet diameter?

?????????????????

 

[Kentucky Boy]

I measured for the air filter and it's a 1.5" opening, that would be about 38mm right? Not sure what the 26 is?

 

[bob58o]

I measured for the air filter and it's a 1.5" opening, that would be about 38mm right? Not sure what the 26 is?

Could just be a casting number? IDK too much about carbs YET.

 

[Kentucky Boy]

I doubt it's a random number.

 

[KartFab]

i have heard that the mikuni is a good one for gas, and the tillotsons do best with methanol.

 

[Kentucky Boy]

Mikuni is very similar to the keihin, which is what I have. I love it and it ran very strong before my brass overflow pipe cracked in it. I am leaning toward the Mikuni althought the cheap version is only about $25.

 

[Hellion]

That was a rave review. So rebuilding it is out of the question due to cost?

 

[Kentucky Boy]

This carb needs new gaskets and a brass overflow/bowl vent tube. I'd rather have a brand new carb than try to track down all the parts it needs.

I just ordered a Mikuni 22mm. I'll update after it gets here.

 

[Hellion]

Good deal. Looking forward to the results.

Watching a few videos on U-Tub shows that adding these newer/aftermarket carbs gives a lot of reliability to the old Briggs in the form of one-pull starts, etc. Has that been your experience as well?

About 2:30 in the video:
https://youtu.be/ixIyy4RCagM

 

[KartFab]

Good deal. Looking forward to the results.

Watching a few videos on U-Tub shows that adding these newer/aftermarket carbs gives a lot of reliability to the old Briggs in the form of one-pull starts, etc. Has that been your experience as well?

About 2:30 in the video:
https://youtu.be/ixIyy4RCagM

That looks familiar. So far so good. Only have four hours on the engine but it looks promising with just the honda clone carb on it that i got for $15 on ebay. Im actually wanting to get the mikuni 22 mm so im excited that mr kentucky boy is putting on on his. the gx200 carb is just a little too restrictive

https://www.instagram.com/p/BGGUjd1Hz3I/?taken-by=kartfab
https://www.instagram.com/p/BGVBklcnzyF/?taken-by=kartfab

 

[bob58o]

Good deal. Looking forward to the results.

Watching a few videos on U-Tub shows that adding these newer/aftermarket carbs gives a lot of reliability to the old Briggs in the form of one-pull starts, etc. Has that been your experience as well?

About 2:30 in the video:
https://youtu.be/ixIyy4RCagM

Well I hope you at least liked the video on the Tube!

 

[Kentucky Boy]

I'll update as I get the new carb and test it out. Carb should be in in a few days. I also bought a Predator yesterday as a backup if I can't get the Briggs tuned in right. It's just a backup though. I really want the Briggs on my kart, it's just a cool American made motor.

 

[mckutzy]

What do you have for a carb mount for the briggs? You making one or going to get a premade one?

 

[Kentucky Boy]

I custom made an intake. Not that hard to do just time consuming. Hopefully I can just bolt the new carb on it.