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Engine assy nos |
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Joe Friday 
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 Topic: Engine assy nosPosted: 27 Sep. 2022 at 8:34am |
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Yes, I'll try to find them.
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dasvis
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Posted: 26 Sep. 2022 at 10:33pm |
Now that's cool! Any photos?
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1947 CJ2A #88659 "Rat Patrol"
1953 CJ3A #453-GB1 11266 "Black Beauty" 1964 Thunderbird convertible ..... & one of them moves under it's own power!! |
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Joe Friday
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Posted: 26 Sep. 2022 at 7:19pm |
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It's been 15 years since I found two ALUMINUM L-Head bare blocks. NEW in the Kaiser aluminum box.
If I ever get them, I plan to build one, and display the other in a museum next to a Bobcat display.
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Oldpappy
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Posted: 26 Sep. 2022 at 5:49pm |
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Glad I don't come across such things in parts deals. A brand new engine in a crate would present a real dilemma for me.. The devil on my shoulder would be tempting me to use it in a Jeep, but the angel on the other shoulder would be telling me it should be left as is in the crate.
All seriousness aside, it would be a shame to take that out of the crate. It needs to be on display in my man cave.
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If you can't get there in a Jeep you don't need to be there!
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Joe Friday
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Posted: 07 Sep. 2022 at 8:52pm |
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There were several contracts for 1-MB motors.
Based on Serial, this is a later contract after the early ones were depleted.
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Joe Friday
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Posted: 07 Sep. 2022 at 8:50pm |
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The head and block tell you it was later, and honestly I think what appears as primer is part #680305 motor enamel all state orange.
And this gear  |
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Bob W
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Posted: 07 Sep. 2022 at 8:48pm |
I will bet that the crate motor is gear drive. Those 1MB prefix engines are all in the time frame of gear drive. The Army would have used whatever engine was available to repair a broken Jeep. No need to scrap good chain drive engines. Edited by Bob W - 07 Sep. 2022 at 8:52pm |
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Ron D
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Posted: 07 Sep. 2022 at 8:41pm |
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Which still kind of raises the question if that 1967 crate motor is gear or chain drive (without an inspection or seeing the block casting number). Would the Army have scrapped otherwise fresh (new or rebuilt) stock of chain drive L134's --- or would they have used them up first when a MB needed a motor? Seeing these old documents is awesome!
Edited by Ron D - 07 Sep. 2022 at 8:46pm |
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1951 M38
1951 M100 |
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Joe Friday
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Posted: 07 Sep. 2022 at 8:41pm |
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So the Camshaft is 211-D, which is BOM 6006, which is a gear drive camshaft.
 Edited by Joe Friday - 07 Sep. 2022 at 8:42pm |
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Bob W
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Posted: 07 Sep. 2022 at 8:40pm |
I don't think they made a "complete switch". Most of the Jeeps in Korea were G503s with chain drive engines. After a while the Army needed more spare parts. Willys didn't back date their current engine when supplying replacement engines, so there were both original chain drive and also replacement gear drive engines.
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Joe Friday
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Posted: 07 Sep. 2022 at 8:39pm |
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The table gives groups, and BOM reference.
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Ron D
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Posted: 07 Sep. 2022 at 8:28pm |
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Learn something new every day. Thanks! I wasn't aware that the Army made the complete switch from chain to gear drive motors (including the manuals). It makes sense, considering the number of MB-GPW's that must've still been in active and guard service after the war, post 1945 and into the 1950's. They only made about 65,000 M38's ---- not nearly enough to replace all those MB-GPW's.
Edited by Ron D - 07 Sep. 2022 at 8:30pm |
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1951 M38
1951 M100 |
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Bob W
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Posted: 07 Sep. 2022 at 8:00pm |
 Screen shot from Ord 9 SNL G-503 MB GPW Jeep 1949
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Ron D
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Posted: 07 Sep. 2022 at 7:42pm |
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Government packaging markings can be cryptic. That 1967 date could very well mean the last inspection or packaging date (nothing to do with when it was originally made or rebuilt-overhauled). Would the Army put a gear drive motor into an MB? That sure would make the MB manual obsolete, even if it didn't confuse the mechanics. Thanks for any additional info you can provide. Interesting!
Edited by Ron D - 07 Sep. 2022 at 7:46pm |
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1951 M38
1951 M100 |
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Joe Friday
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Posted: 07 Sep. 2022 at 7:36pm |
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Well I guess that give me a reason to look up the BOM and post the part numbers afterall.
I guess if I mentioned that the spreadsheet was from 1964 and the new crated engine was 1967 I doubt they would go backwards and switch back to Chain, Plus it is a generic replacement engine for MB and MC, (even though there are more listings for MC...
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Ron D
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Posted: 07 Sep. 2022 at 7:30pm |
How can you tell? (I would've guessed the serial number points to it being chain drive) Could be mistaken, but I'd guess the Army wouldn't put a chain drive motor into an M38 under any circumstance. Motors described as "MB-MC" on that list.......I can understand the accessory differences between an MB and MC L134, those are fairly easy to reconfigure.....but the different front mounting plates isn't so easy.
Edited by Ron D - 07 Sep. 2022 at 7:40pm |
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1951 M38
1951 M100 |
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Joe Friday
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Posted: 07 Sep. 2022 at 6:37pm |
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It would be gear drive.
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mbullism
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Posted: 07 Sep. 2022 at 4:51pm |
#'s 32 and 33, ("Ext. Valves Seat Inserts)... 908756
 Edited by mbullism - 07 Sep. 2022 at 4:52pm |
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Those who do not learn from history are doomed to repeat it... Welcome to 1930's Germany
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Joe Friday wrote: