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09-28-2019, 02:22 PM | #1 |
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Different Model A Venturi
..
Found this at a Swap Meet today. Same as Zenith but with brass insert. Does not look home made. What is it for. Thanks .. Last edited by Joop; 09-28-2019 at 06:02 PM. |
09-28-2019, 02:53 PM | #2 |
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Re: Different Model A Venturi
Looks like some sort of aftermarket venturi. Put it in a Zenith carburetor and see if it runs.
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09-28-2019, 03:33 PM | #3 |
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Re: Different Model A Venturi
since venturi is smaller maybe it is for a British engine ...
Although Henry would have used all pot metal unless there was a manufacturing problem which required brass for the smaller opening. Brass was expensive Last edited by Benson; 09-30-2019 at 08:14 AM. |
09-28-2019, 04:17 PM | #4 |
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Re: Different Model A Venturi
If the inside diameter of the venturi is smaller it will restrict power .
Last edited by Purdy Swoft; 09-28-2019 at 08:51 PM. |
09-28-2019, 05:51 PM | #5 |
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Re: Different Model A Venturi
Added some pictures
Last edited by Joop; 09-28-2019 at 06:01 PM. |
09-29-2019, 06:00 PM | #6 |
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Re: Different Model A Venturi
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09-29-2019, 06:03 PM | #7 |
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Re: Different Model A Venturi
Si, No es Ford!
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09-29-2019, 10:17 PM | #8 |
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Re: Different Model A Venturi
The carburetor for the AF engines did have a smaller orifice venturi (and smaller jet orifices as well).
Here is an original, April 1931, document from Zenith, France indicating the size of the AF single venturi. See the blue arrow indicating that the venturi of the carburetor for the AF engine is "18" compared to the venturi for an A and AA engine is "21.5" (look under the "Diff" column): "Diff" = Diffuseur, the french word for venturi So based on the measurements that you show of your mystery venturi, it seems like it is not a venturi for a Model AF engine. Brad in Maryland Last edited by Brad in Germany; 09-29-2019 at 10:27 PM. |
09-30-2019, 07:16 AM | #9 |
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Re: Different Model A Venturi
Thanks for posting that info Brad
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09-30-2019, 10:03 AM | #10 |
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Re: Different Model A Venturi
Yes I concur with Brad the smaller engine was 18mm dia venturi ( approx 0.7 inch). Suspect that the venturi in the OP is someone's experimentation.
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09-30-2019, 02:56 PM | #11 |
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Re: Different Model A Venturi
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