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Harleygaz Member
Joined: Jul 18, 2019 Posts: 101 Location: Mississippi, near Memphis TN
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Posted: Wed Mar 18, 2020 11:57 am Post subject: Highest known RMC engine number |
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Hi. What is the highest known RMC engine number and when did RMC production end? Mine is RMC106676. I know it’s almost impossible to know its year of manufacture but I’d like to get an idea of whereabouts in the overall production period it fell and knowing that MC stopped around 90xxx and knowing what year MC production stopped I should be able to get close. _________________ Gary
M38 - June 1952 |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16249 Location: Wisconsin
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Posted: Wed Mar 18, 2020 12:05 pm Post subject: |
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That won't work.
The engines with the same casting number were not serialed at the foundry. They received a serial when they were installed in a chassis or ordered as an RMC by the army. There is no real orderly progression of RMCXXXXX numbers. The closest you can ever get for the 804380 is sometime between Jun 1952 until the casting ended production about 1955 - 57. The RMC numbers on the 641087 castings were from 1950 thru the end of 1952. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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Harleygaz Member
Joined: Jul 18, 2019 Posts: 101 Location: Mississippi, near Memphis TN
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Posted: Wed Mar 18, 2020 12:08 pm Post subject: |
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Thx Wes. Just out of interest what is the highest RMC number you are aware of? _________________ Gary
M38 - June 1952 |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16249 Location: Wisconsin
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Harleygaz Member
Joined: Jul 18, 2019 Posts: 101 Location: Mississippi, near Memphis TN
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Posted: Wed Mar 18, 2020 12:24 pm Post subject: |
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Thx Wes. Just out of interest what is the highest RMC number you are aware of? _________________ Gary
M38 - June 1952 |
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45auto Moderator
Joined: Apr 06, 2005 Posts: 148 Location: Georgia
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Posted: Wed Mar 18, 2020 3:19 pm Post subject: |
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The highest RMC engine number I have in the database is
RMC 166173 the one just above it is RMC 129000.
I can also tell you that when sorting the MC and RMC engine together the RMC engines sort together in batches indicating the RMC engines were built and designated as RMC engines as MC engines were being built. _________________ Harold W.
MVPA #6833
1945 GPW
1950 CJV-35/U
1951 M38 1952 M38
1962 USMC Contract M38A1
1953 Strick M100 1967 Johnson M416
1968 CJ5 4-Speed 1969 CJ5 V6 |
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RonD2 Member
Joined: Oct 02, 2014 Posts: 1909 Location: South Carolina, Dorchester County
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Posted: Wed Mar 18, 2020 5:38 pm Post subject: |
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Hi Hal,
Just for clarity, did they start serial numbering with the leading "1"....meaning for example that RMC 166173 was the 66,173 serial number used and not the 166,173 serial number used?
Thanks! _________________ Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
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45auto Moderator
Joined: Apr 06, 2005 Posts: 148 Location: Georgia
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Posted: Wed Mar 18, 2020 6:39 pm Post subject: |
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Since I can't post a clipping of the database to show how the MC and RMC engines fall in line with each other let me layout an example.
MC engines started with serial number MC 10001 and progress to, lets say for this example, MC 10500. Willys would then continue with the serial number sequence and RMC 10501 to 10600 would become R-eplacement MC engines.
MC 10601 would be the start back of engines install in M38s on the assembly line until another order of RMC engines were needed.
You can also see the progression in the M38 database when engines serial numbers jump up steeply. I will never get enough original M38 data to define starting and ending batches of RMC engines, but I do have enough to show what was going on during M38 production.
For all who have M38A1s, you can see the same thing happening with them. _________________ Harold W.
MVPA #6833
1945 GPW
1950 CJV-35/U
1951 M38 1952 M38
1962 USMC Contract M38A1
1953 Strick M100 1967 Johnson M416
1968 CJ5 4-Speed 1969 CJ5 V6 |
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RonD2 Member
Joined: Oct 02, 2014 Posts: 1909 Location: South Carolina, Dorchester County
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Posted: Wed Mar 18, 2020 6:58 pm Post subject: |
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Thank you! _________________ Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16249 Location: Wisconsin
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Posted: Wed Mar 18, 2020 9:50 pm Post subject: |
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Quote: | Posted: Wed Mar 18, 2020 12:24 pm Post subject: Reply with quote Edit/Delete this post Delete this post View IP address of poster
Thx Wes. Just out of interest what is the highest RMC number you are aware of?
_________________
Gary |
Well I didn't look it up because I thought you would follow my advice to go look at the data base yourself to draw your own conclusions. Looks like Harold had his copy right in front of him already. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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Harleygaz Member
Joined: Jul 18, 2019 Posts: 101 Location: Mississippi, near Memphis TN
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Posted: Thu Mar 19, 2020 12:37 pm Post subject: |
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Hi Wes. I did just what you said, I have no idea why my original question was reposted because I didn’t do it deliberately. Maybe I fat fingered something but I sure didn’t type it in again. _________________ Gary
M38 - June 1952 |
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