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06-05-2021, 08:22 AM | #1 |
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Join Date: May 2018
Location: Coral Springs, Florida
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Model B Carburator
I'm interested in putting the B on my A. Any suggestions plz.
Thanks |
06-05-2021, 08:28 AM | #2 |
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Join Date: Apr 2018
Location: Mebane NC
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Re: Model B Carburator
For performance improvement? Or just for kicks?
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06-05-2021, 08:31 AM | #3 |
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Location: Saint Cloud Mn
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Re: Model B Carburator
Tried it, Went back to the “A”.
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06-05-2021, 08:44 AM | #4 |
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Location: Sagle, Idaho
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Re: Model B Carburator
Have one on my 30 Coup. It runs great with good pick-up. Good luck!
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06-05-2021, 09:41 AM | #5 |
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Join Date: Dec 2019
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Re: Model B Carburator
Drill the center runner of your A intake manifold to 1.25" to realize any gain in performance from a B carb. The best thing is the port/starboard mount float valve, no more stalling on hard stops.
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06-05-2021, 09:44 AM | #6 |
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Re: Model B Carburator
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06-05-2021, 10:25 AM | #7 |
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Re: Model B Carburator
The B manifolds are skewed and require modifying the manifold flange as Brent mentioned above
Or if you do not want to machine the Model B manifold bolt holes, buy this modified bolt set. Renners and Berts have them. Description: ADAPTER FOR MODEL A CHOKE ROD WITH MODEL B CARBURETOR Comments: Allows model A choke rod to connect with B carb on B manifold Application: 1928 - 31. Last edited by Benson; 06-05-2021 at 10:34 AM. |
06-05-2021, 11:02 AM | #8 |
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Join Date: May 2018
Location: Coral Springs, Florida
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Re: Model B Carburator
The best thing is the port/starboard mount float valve, no more stalling on hard stops.[/QUOTE]
OK, this was what I was looking for. I knew I would need to modify the A Intake too. Thanks Guys |
06-05-2021, 12:41 PM | #9 |
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Re: Model B Carburator
Excuse me ...
Last edited by Benson; 06-05-2021 at 10:00 PM. |
06-05-2021, 02:20 PM | #10 | |
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Location: St. Augustine, Fl.
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Re: Model B Carburator
Quote:
on this Zenith - 1 Carburetor thread and give a reason why this particular carb behaves as it does. It will be greatly appreciated. Thanks
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06-05-2021, 02:48 PM | #11 |
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Location: northeast pa.
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Re: Model B Carburator
I have a b zenith on my 31 along with a 6-1 head and an aries muffler I modified the a manifold. I wanted a better power band for the hills around my state and it does the job very well. I find the zeniths to have some quirks to them but remember when they were designed.
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06-05-2021, 04:35 PM | #12 |
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Location: Illinois
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Re: Model B Carburator
A friend bought 4 B carbs and decided to learn all he could about them.
Renner’s Corner has rebuild parts and instructions . They have drawings for all the special tools you need. I made some of these in my shop. He has been on this quest for about a year and has never had one not leak,so he is throwing in the towel on Model B carbs. They run great for him,but leak. John
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06-05-2021, 05:28 PM | #13 | |
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Re: Model B Carburator
Quote:
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06-05-2021, 05:39 PM | #14 |
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Re: Model B Carburator
Xxxxxxxxxxxx
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I know the voices aren't real but damn they have some good ideas! Last edited by redmodelt; 06-06-2021 at 08:39 AM. |
06-06-2021, 05:31 AM | #15 |
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Re: Model B Carburator
I rebuild "B" carburetors. They perform great but they have to be rebuild correctly. This means they should be totally taken apart and ALL the internal passages cleaned and the passage plugs replaced. You do have to be very careful removing the brass GAV screw. And when it's replaced use a gas resistant non-hardening sealer on it to prevent leaks.
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06-06-2021, 05:56 AM | #16 |
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Location: Rhinebeck, NY
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Re: Model B Carburator
I have a B carburetor, ported A manifold, and Snyder's head on my coupe. Couldn't be happier with it. No leaks.
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06-06-2021, 06:01 AM | #17 |
Member
Join Date: May 2021
Location: northeast pa.
Posts: 30
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Re: Model B Carburator
Gene F my gav is about 1/2 turn and I don't pull the spark advance lever down anymore than 9 oclock position.
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06-06-2021, 09:15 AM | #18 |
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Re: Model B Carburator
I have a B Carb on my 32 Model B. It is not as much fun to use as the A carb. Per the Ford Service Bulletins, the GAV is to open only on a cold start and then closed. If it is open some all the time, it will be running rich. Part of driving the Model A is the experience of adjusting the GAV for the best performance. Ed
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