Engine ID.Late CJ2A?Barn find.

1945 - 196*, Willys CJ series, questions, discussions, regarding anything related to the post war jeep.®
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SweMob
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Engine ID.Late CJ2A?Barn find.

Post by SweMob » Sun Dec 25, 2016 9:08 am

Need help to ID this Engine.Barn find.Just Engine,no jeep with it.

Serial number behind water pump.J 277299
Block machining/assembly date stamp 6 19 1

/Mats
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Sean Collins
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Re: Engine ID.Late CJ2A?Barn find.

Post by Sean Collins » Mon Dec 26, 2016 9:26 am

That engine is 1950 or 51 vintage.

It is a CJ-2A serial number, but was not factory installed in a vehicle. Willys continued to make CJ-2A "model" engines long after vehicle production, for replacement and commercial/industrial purposes.

June 19 (6-19) machining/assembly date stamp comports with the June 6 (6-6) casting date. The lone "1" may be the year "51", but more info/photos are needed to confirm.

Does it have 2 or 4 freeze plugs on the passenger side? Get a photo showing the entire passenger side of the block.

Get a photo of that data tag riveted on the side, it has some more info.
 

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Re: Engine ID.Late CJ2A?Barn find.

Post by SweMob » Mon Dec 26, 2016 3:15 pm

Thank you for info Sean.

Engine is rebuilt by Danish Army in 1961.Mains 010 Rods 010 Cylinders 020
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Sean Collins
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Re: Engine ID.Late CJ2A?Barn find.

Post by Sean Collins » Tue Dec 27, 2016 9:33 am

Good photos Mats, they make it clearer.

That is a 1949 casting, still made as a replacement engine, same configuration as used in CJ-2A from Jan 1947 to end of vehicle production.
 

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Re: Engine ID.Late CJ2A?Barn find.

Post by ndnchf » Thu Dec 28, 2017 6:49 pm

Interesting, my '48 CJ2A has an engine number very close to this one, J277264. I've not tried to date it, but now I'm curious.


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Re: Engine ID.Late CJ2A?Barn find.

Post by ndnchf » Mon Feb 05, 2018 3:22 pm

I'd like to follow up on my engine and ask what you guys think. Mine has a serial number very close to the OP's number. Mine is J277264, and has the same casting and date code numbers. This leads me to believe they were both cast on June 19th, 1949 (based on Sean's comments). The serial numbers are only 35 apart, so they could have even been built the same day. But I notice the number stamps look different on each. Could it be that more than one person was stamping them? This motor is in my '48 Cj2A, sn #217528. Does it seem unlikely that this is the original engine? Here are pics of my number and the OP's for comparison. Thanks, Steve
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Sean Collins
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Re: Engine ID.Late CJ2A?Barn find.

Post by Sean Collins » Fri Feb 09, 2018 9:50 am

The casting date is June 6th., the machining/assembly date is June 19th.

IMO not original, but replacement engine. June '49 was 6 months after vehicle production ended, and the number is far in excess of other known vehicle/engine matches at the end of production:

       S/N           engine       difference
      214349      234571      20222
      217296      235894      18598
      219719      248748      29029
      221743      254733      32990
      222564      257903      35339
      222638      257376      34738
      223007      258789      35782
      223009      258788      35779

Your vehicle would be 3rd in this list, with a difference of 59736.
 

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Re: Engine ID.Late CJ2A?Barn find.

Post by ndnchf » Sat Feb 10, 2018 2:37 pm

Thank you Sean, your insight is greatly appreciated!

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Re: Engine ID.Late CJ2A?Barn find.

Post by harve » Tue May 29, 2018 1:54 pm

I have 641087 W4 casting with the blank pad behind Oil filter. 1946 perhaps ? I don’t know, serial on boss is gone

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