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03-09-2021, 07:08 PM | #1 |
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Model B timing cover vs model a
I have just checked the 1932 Bible and don't see any pictures of the model b timing cover. Is there a difference between the B and A cover and what is it?
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03-09-2021, 08:08 PM | #2 |
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Re: Model B timing cover vs model a
The easiest way to tell the difference is the area where the timing pin is inserted into the cover. On a Model A timing gear cover the raised area surrounding the hole is round and on a Model B cover, the raised area is oval shaped reflecting the initial advance of the Model B ignition. Once you know that difference, the other timing cover that you might encounter is that of the '33-'34 fours. The raised area around the timing pin hole reverted to a circle, but the generator mounting location is noticeable set back and the spacing of the motor mount bracket attachment holes along the bottom of the front of the cover have a very unique spacing compared to either the A or B covers.
I've added an out-of-focus photo of a Model B cover where you can at least perceive the oval area around the hole for the timing pin and a somewhat better photo of the very different '33-'34 timing gear cover. Sorry about the photo quality. Last edited by DavidG; 03-09-2021 at 08:50 PM. |
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03-09-2021, 08:50 PM | #3 |
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Re: Model B timing cover vs model a
If you have never been to the ford garage before, check it out for all your 4cyl questions http://www.fordgarage.com/
Last edited by cas3; 03-10-2021 at 12:21 AM. Reason: spelling |
03-09-2021, 08:54 PM | #4 |
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Re: Model B timing cover vs model a
Two photos of a '33-'34 cover and one showing the oval area on a Model B cover. I believe I read somewhere that a small number of Model A covers were made from the Model B casting by locating the pin at the bottom instead of the top of the oval (not shown).
Charlie Stephens Last edited by Charlie Stephens; 03-09-2021 at 09:00 PM. |
03-09-2021, 08:57 PM | #5 |
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Re: Model B timing cover vs model a
cas3 is correct, you can find much better photos of the three major U.S. versions plus more on that site.
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03-10-2021, 06:43 AM | #6 |
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Re: Model B timing cover vs model a
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03-10-2021, 11:12 AM | #7 |
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Re: Model B timing cover vs model a
Also note that you cannot use the B timing cover on a model A or vice versa.
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03-10-2021, 12:20 PM | #8 |
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Re: Model B timing cover vs model a
Charlie,
You're correct, that late Model A variation shows up on the fordgarage.com site. |
03-11-2021, 09:16 AM | #9 |
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Re: Model B timing cover vs model a
I believe you can as long as you find and alternative to find top dead center or initial timing for a B distributor. If you're running an A distributor in a B block you need the A timing cover.
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