Identifying our '51 M38 Restoration

mdainsd · Post by **mdainsd** » Tue Jun 19, 2018 8:59 am

The engine numbers don't match the S/N of M38s or other Jeeps for that matter.

There are actually three windshield brackets involved for the scabbard. One on the right of the vent as mentioned, one on the left windshield frame and another one on the left that mounts similarly to the one on the right.

Post by **wesk** » Tue Jun 19, 2018 9:30 am

The engine numbers don't match the S/N of M38s or other Jeeps for that matter.

Actually the MB's and GPW's jeeps built during WWII came with matching engine/chassis serials. Postwar Willys/Kaiser/AMC/Chrysler did not continue the program.

These are the three mount brackets in question.

4x4M38 · Post by **4x4M38** » Tue Jun 19, 2018 2:43 pm

You can buy the middle one, or just buy some flat steel and
make one.

Those compound angles are fun.....

Went to school on Bretto. Cobbled them up out of
cardboard before I fabbed the real thing.

redvettemike · Post by **redvettemike** » Tue Jun 19, 2018 2:48 pm

The engine in the Jeep has 0 (zero) compression on one cylinder. Other 3 have about 100lbs each. A stuck intake valve we think. Will such free up or should we pull the head and have the valves machined?

mdainsd · Post by **mdainsd** » Tue Jun 19, 2018 4:06 pm

I have had very good luck with flathead willys and dodges doing this:

Take the head off. verify you actually have a stuck valve.
Remove intake/exhaust manifolds. Find corks or stoppers that fit tightly into the ports in the blocks.
Fill the port under the stuck valve(s) with Marvel Mystery Oil. Let is sit, then see after a couple of days if you can get the valves to tap down (mind you don't tap it down when the cam is trying to hold it open use distributor rotor to determine). If they do, then bar the engine over until they are stuck up again. Repeat as required. It took two weeks of daily doing this on the last one I did, but they come clean and so far no recurrence.