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Old 09-19-2021, 11:07 AM   #1
emf
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Default Early 28 Engine

I just picked up an A engine with serial number A86692 with stars before and after. I'd like to verify that this is really an early engine rather than just trust the serial number. Anyone know what to look for to verify that it really is an early 28 engine?


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Old 09-19-2021, 11:22 AM   #2
LeonardS
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Default Re: Early 28 Engine

Post some photos of all 4 sides and the oil pan.
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Old 09-19-2021, 11:58 AM   #3
Gary Karr
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Default Re: Early 28 Engine

Your engine was stamped and sent to production on April 16, 1928.
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Old 09-19-2021, 11:59 AM   #4
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Default Re: Early 28 Engine

Here you go...


The head may be later. There is a casting date in the middle that is 7-30-48.


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Old 09-19-2021, 12:06 PM   #5
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Default Re: Early 28 Engine

Appears to be a 28 oil pan.
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Old 09-19-2021, 12:29 PM   #6
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Default Re: Early 28 Engine

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You can go through this document and narrow down based on small details.

http://www.plucks329s.org/pdf/engine...ESCRIPTION.pdf
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Old 09-19-2021, 12:48 PM   #7
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Default Re: Early 28 Engine

Quote:
Originally Posted by LeonardS View Post
Appears to be a 28 oil pan.
How can you tell?
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Old 09-19-2021, 01:34 PM   #8
LeonardS
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Default Re: Early 28 Engine

Quote:
Originally Posted by Gene F View Post
How can you tell?
It has the plate on the bottom of the pan, so you can remove the oil pump. The newer pans don’t have that feature.
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Old 09-19-2021, 02:41 PM   #9
jg61hawk
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Default Re: Early 28 Engine

Engine #86692 was made on Apr 16, 1928

http://modelahouse.com/cgi-bin/enumbers/numdate
ONE COOL LINK
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Old 09-19-2021, 02:57 PM   #10
Miles in MN
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Default Re: Early 28 Engine

Has a forged rear main cap which is correct. Has a small-eared timing cover which is not correct. Should have a five bearing cam but you would need to remove the pan to verify.
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Old 09-19-2021, 06:25 PM   #11
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Default Re: Early 28 Engine

Thanks for the insight. Not sure what I'm going to do with it, but I'll probably remove the cylinder head to check the condition of the top end. I sure don't need it for a spare, but who knows...


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Old 09-20-2021, 08:03 AM   #12
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Default Re: Early 28 Engine

I took the head off just a while ago. Not sure yet, but it has 4 new aluminum standard size pistons and all new one piece valves. Pistons are still bright and shiny but the valves have carbon on them. Later today I'll clean the valves a bit and tomorrow will check the bottom end. This may be for sale...


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Old 09-20-2021, 10:51 AM   #13
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Default Re: Early 28 Engine

New pistons and standard size? Has it been sleeved?
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Old 09-20-2021, 11:23 AM   #14
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Default Re: Early 28 Engine

should have a five bearing cam if its early 28
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Old 09-21-2021, 10:25 AM   #15
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Default Re: Early 28 Engine

Replacement engines purchased during production could have the number stamped on by a dealer or other shop. Stamp sets were available for Ford engines back in the day. If it was manufactured after production of the model A was over then it would likely be a diamond block with the characteristic casting mark.

Pluck's list is pretty thorough. Most folks set them up as close as possible to OEM but if an engine is already stamped then there is not much that can be done. The frame number is the one that counts the most.
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Old 09-21-2021, 01:03 PM   #16
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Default Re: Early 28 Engine

OK, pistons are standard size (witness std stamped on top), no sleeves, new one piece valves, new fiber cam gear, new adjustable tappets. A couple of cylinder holes still show hash marks from the hone. This has a 5 bearing cam shaft, appears to be re-ground. Per Pluck's paper, Front oil dam is even with the push rod boss, middle dam is low. This, along with the elongated water passage hole places this engine after 3/12/28. Looks to me that the serial number is authentic as far as calendar dates go. If I had to guess, it looks like someone totally rebuilt this block, ran it in a bit, and then stopped using it. I'll try to track down the owner to gain more info.



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