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01-18-2022, 01:41 AM | #1 |
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Speaking of engines
I have this engine that I'd like some advice on. It has been in the garage for decades and I'd like to map out a plan for it. I'd like opinions on the approximate year. From what I can gather off Van Pelts it is somewhere between a '38 to '42? The bell housing is integral but there is no number cast into it. The only other numbers found are pictured. There are no visible cracks I can see. I only recently exhumed it and have not inspected it closely. It is on a home built roller stand and could easily be moved. It is stuck. There is a local shop with hot tanking available and I'm thinking for starters I could remove the intake manifold and have it tanked as is, pistons and all. I haven't even looked if the oil pan is on it but if it is I'd remove that too. If any have further questions on existing conditions of it or further advice please ask. My thinking at least as a start is to get it cleaned, then go from there. Thanks for any input.
Tom Last edited by tomcarman; 01-18-2022 at 01:58 AM. |
01-18-2022, 02:03 AM | #2 |
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Re: Speaking of engines
Looks like it will pass the "Pencil Test". Have you measured the bore?
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01-18-2022, 02:06 AM | #3 |
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Re: Speaking of engines
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01-18-2022, 02:10 AM | #4 |
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Re: Speaking of engines
I'm just an "8BA Guy", but don't the trapezoidal water passages mean something good?
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01-18-2022, 02:37 AM | #5 |
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Re: Speaking of engines
Its clearly a 21 stud. 36 and earlier. If it was '38 it would have the water pumps in the block.Pull the intake and see if its a vented block.If so it might be an LB.
Last edited by deuce lover; 01-18-2022 at 02:44 AM. |
01-18-2022, 02:43 AM | #6 |
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Re: Speaking of engines
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That's a 21-stud, with the noticeable LACK of water pumps. Gotta be a '36 or earlier engine. DD OOPS: Late by a hair! . |
01-18-2022, 01:51 PM | #7 |
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Re: Speaking of engines
My best seat of the pants guess is that it is a 36 engine. It appears to have steel pistons and if I'm correct, they were introduced in 36. As long as the block is good - would be a good engine to build! Best of luck . . .
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01-18-2022, 02:06 PM | #8 |
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Re: Speaking of engines
Pistons are flat top.I believe 36 were domed although the engine could have been rebuilt sometime in its life and pistons replaced.
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01-18-2022, 02:11 PM | #9 |
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Re: Speaking of engines
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01-18-2022, 02:20 PM | #10 |
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Re: Speaking of engines
WTH is the pencil test
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01-18-2022, 02:23 PM | #11 |
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Re: Speaking of engines
If it is a poured Babbitt engine hot tanking it will damage the Babbitt
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01-18-2022, 03:45 PM | #12 |
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Re: Speaking of engines
It describes one physical feature of a block which will aid in identifying differences between different year blocks.
In the first picture, note the flat lip formed directly above the camshaft/timing gear COVER location. It sticks-out far enough that a PENCIL will sit on it. '39-'42, 24-stud flatheads also have that lip which WILL support a pencil, thus passing the "pencil test", thus indicating a 24-stud block in the '39-'42 range. There is no way that the lip on block behind this timing cover would support a pencil, indicating probably a '46-'48 24-stud engine. DD |
01-18-2022, 03:55 PM | #13 |
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Re: Speaking of engines
21 stud , my lb has the same 15a casting . Not sure if that is positive proof but it could be .
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01-18-2022, 05:30 PM | #14 |
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Re: Speaking of engines
Just pull the pan and a main. Lots of changes occurred when rebuilders used what new parts they had on hand.
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01-18-2022, 06:18 PM | #15 |
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Re: Speaking of engines
Is there a vent on the bottom, front of the oil pan? (pre 35 no vent), and If you can see a part number on the front water outlets, that may put a year on them anyway
Last edited by cas3; 01-18-2022 at 06:19 PM. Reason: add |
01-18-2022, 06:29 PM | #16 |
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Re: Speaking of engines
Main bearing journal diameter will narrow down the year.
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01-18-2022, 06:57 PM | #17 |
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Re: Speaking of engines
Those front water outlets are 35
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01-18-2022, 07:16 PM | #18 |
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Re: Speaking of engines
Please don't hot tank the engine assembled. Take it completely apart and tank what parts need to be cleaned that way and avoid damaging the rest. In addition, tanking an assembled (even partly) engine will be a complete mess of nasty oozing chemical,partially dissolved gunk and general nastiness that you'll regret.
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01-18-2022, 08:03 PM | #19 |
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Re: Speaking of engines
What is the difference between 34, 35 ,and 36 ? I thought they were the same .
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01-18-2022, 08:18 PM | #20 |
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Re: Speaking of engines
Tried to upload Fred Mills evolution of the flathead. It's a PDF and may be to large? 3.8mb. Great details of the early fords only a few corrections. Guess I could email it to someone.
36 had cam bearings. 36LB no babbit. |
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