Need help verifying serial numbers on an MB and a GPW please

1941 - 1945, MB, GPW Technical questions and discussions, regarding anything related to the WWII jeep.
sjalbert
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Re: Need help verifying serial numbers on an MB and a GPW please

Post by sjalbert » Sat Feb 10, 2024 4:09 pm

In my database I have:

S/N 433154 DOD 4/7/1945 Eng # 579994 Tub # 220039
S/N 434686 DOD 4/11/1945 Tub # 219600
S/N 434984 DOD 4/11/1945 Tub # 243797
S/N 435576 DOD 4/16/1945 Tub # 222931

Those last three enties were sourced from an article by Jim Kilbourn archived at https://web.archive.org/web/20030830082 ... ourn-c.htm

The article has the following text:

"Assigning a Frame Serial number for Willys MBs with just a body number.

The first composite was used on MBs at about MB 298000, 44-1-16/17. The body numbers used increased at a rate faster than frame numbers. There were 158,132 MB frames made and about 263,000 tubs. So MBs account for using 61% of body numbers. In other words Composite body numbers increase .61 times faster than Willys frame numbers. The two numbers must be accounted for in determining your frame number.

First, take your body number and multiply by .61. This adjusted amount will account for the Ford production bodies taken out from the beginning of composite use. Then add 298000, about the first MB frame to use a composite, to the adjusted amount. This is your approximate frame number. It is accurate to about +/- 1500. You can calculate a body number by first subtracting 298,000 from the frame number for a result. Multiply the result by .61 and add the two results together. It is very accurate."
Seth
******
1944 MB 349858, 20620361
1942 MBT 10968 viewtopic.php?f=18&t=149552
1942 MBT 15799, USA 0217497 viewtopic.php?f=18&t=225199
MVPA # 8587
Com / Inst. SMEL
CFII - ASEL
KI5LYB

Collecting Willys Engine Info. Please send me Engine #, Casting Date & Machining Date if known


Jim Thomason
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Re: Need help verifying serial numbers on an MB and a GPW please

Post by Jim Thomason » Mon Feb 12, 2024 6:00 am

ahaydon / ajalbert
Here are another set of original numbers. It was surplus- Apr 15, 1946. I still have the original processing papers that came with it. Hope this is helpful. Willys MB Jan/22/45 DOD, 409033 sn, 540550 eng sn, 183567 body sn, USA 20675601 S hood sn. JimT

sjalbert
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Re: Need help verifying serial numbers on an MB and a GPW please

Post by sjalbert » Mon Feb 12, 2024 9:34 am

Thanks Jim,

I had your serial number and hood number but not the other details.
Seth
******
1944 MB 349858, 20620361
1942 MBT 10968 viewtopic.php?f=18&t=149552
1942 MBT 15799, USA 0217497 viewtopic.php?f=18&t=225199
MVPA # 8587
Com / Inst. SMEL
CFII - ASEL
KI5LYB

Collecting Willys Engine Info. Please send me Engine #, Casting Date & Machining Date if known

Adam
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Re: Need help verifying serial numbers on an MB and a GPW please

Post by Adam » Wed Feb 14, 2024 2:49 am

Have you checked in with the guy in CA who has jeep projects, look in the wanted section.

Adam


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