I am far from being an expert on the subject, but having 5 old pieces of
GPW's gives me a little knowledge (sometimes a dangerous thing).
First, it sounds like to me that you have a GPW motor with a post war
civilian cylinder head. That fairly common, as the heads are fairly thin and
tend to warp. With the GPW casting on the right side above the oil pan, I
think you can safely say that the motor is a GPW.
Second, 90216 is in the fairly early GPW range. The MB's are generally
accepted as starting at 100,000. A MB expert may correct me on that however.
The listing from Ray Crowdery shows 90216 as being between the known GPW
89827 with a dod of Jan. 6, 1943 and GPW 91044 with an unknown Jan, 1943 dod,
followed by GPW 91321 also with a dod of Jan. 6, 1943. It would appear that
Jan. 6, 1943 would be a safe quess as to the date of delivery of your GPW.
Others may disagree with me, but I would say that your vehicle is mostly a
GPW, perhaps with a MB body put on during the war.
The motor size is universally 134 cubic inches, for MB,GPW, CJ2A, CJ3A, and
M38, as well as the later "F" head M-38A1 series. Whatever 134 cubic inches
translates into as cc's will give the exact measurement.
The hole in the dash sounds like a radio speaker hole, which would obviously
not be original.
Hope this is of some help to you.
Tom Campbell - Birmingham, Alabama USA
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