The Ford Barn

Richard Lorenz · 12-29-2018, 05:06 PM

Does anyone know the correct position for the round float in the Zenith B-1 carburetor? I assembled one with the top of the float [top inverted] at 1 3/4 inches above the carburetor seam. The carburetor ran OK, but I did not test it on the road.

Was I close to what it should be? Thanks, Richard Lorenz

Sparky · 12-29-2018, 05:29 PM

The fuel level should be 5/8 inch below the gasket. This is the same as the A carb.

larrys40 · 12-31-2018, 01:43 PM

As you know he barrel float is different than the A.
One of the big thing with B carbs is getting a good seating needle and seat. If it won’t hold vaccum it will leak. The last Bcarn I didabout 2 months ago I had quite a fight between seats and float level along with gav housing sealing .

I had to use two gaskets to get float height right in the last one. You will have to do what you have to do to get it to optimum setting and performance.
All the best.
Larry shepard

Richard Lorenz · 01-01-2019, 03:47 PM

I made up a fuel level tester with the transparent plastic tubing so that I could measure the fuel level with the carb on the car. The result was that my fuel level was 3/4 inch below the seam.

As mentioned above I had set the float 1 3/4 inches from the seam. In the future I will set it at 1 5/8 inches.

As far as getting a leak-tight fuel needle, I have a few old ones that checked out good. I have also purchased 2 new ones, the ball type, which I think are working well. They run about $20.00, I believe, but it can save a lot of head-aches.

larrys40 · 01-01-2019, 04:23 PM

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Richard,
I’ve not had good luck with the B gross jet ball seats. Sounds like you have.
Let me know if you have another solution or trick to them. Always looking for ideas and info.
The last B car was the carb from hell for sure !
Happy new year!
Larry

12-29-2018, 05:06 PM	#1
Richard Lorenz Senior Member Join Date: May 2010 Posts: 447	B carburetor float height Does anyone know the correct position for the round float in the Zenith B-1 carburetor? I assembled one with the top of the float [top inverted] at 1 3/4 inches above the carburetor seam. The carburetor ran OK, but I did not test it on the road. Was I close to what it should be? Thanks, Richard Lorenz

12-29-2018, 05:29 PM	#2
Sparky Senior Member Join Date: May 2010 Location: Rhode Island Posts: 649	Re: B carburetor float height The fuel level should be 5/8 inch below the gasket. This is the same as the A carb.

12-31-2018, 01:43 PM	#3
larrys40 Senior Member Join Date: May 2010 Location: St Charles , Missouri Posts: 1,998	Re: B carburetor float height As you know he barrel float is different than the A. One of the big thing with B carbs is getting a good seating needle and seat. If it won’t hold vaccum it will leak. The last Bcarn I didabout 2 months ago I had quite a fight between seats and float level along with gav housing sealing . I had to use two gaskets to get float height right in the last one. You will have to do what you have to do to get it to optimum setting and performance. All the best. Larry shepard

01-01-2019, 03:47 PM	#4
Richard Lorenz Senior Member Join Date: May 2010 Posts: 447	Re: B carburetor float height I made up a fuel level tester with the transparent plastic tubing so that I could measure the fuel level with the carb on the car. The result was that my fuel level was 3/4 inch below the seam. As mentioned above I had set the float 1 3/4 inches from the seam. In the future I will set it at 1 5/8 inches. As far as getting a leak-tight fuel needle, I have a few old ones that checked out good. I have also purchased 2 new ones, the ball type, which I think are working well. They run about $20.00, I believe, but it can save a lot of head-aches.

01-01-2019, 04:23 PM	#5
larrys40 Senior Member Join Date: May 2010 Location: St Charles , Missouri Posts: 1,998	Re: B carburetor float height Sponsored Links (Register now to hide all advertisements) Richard, I’ve not had good luck with the B gross jet ball seats. Sounds like you have. Let me know if you have another solution or trick to them. Always looking for ideas and info. The last B car was the carb from hell for sure ! Happy new year! Larry