M38 engine

Kendall · Posted: Sun Mar 05, 2006 9:14 pm Post subject: M38 engine

I recently added a 1951 M38 to my motorpool that needs a new engine. Does any one have one they would like to sell (close to Wichita, KS)? Thanks, Kendall

Ryan_Miller · Posted: Tue Mar 07, 2006 7:36 pm Post subject:

Kendall,

I have a CJ3A 4cyl engine block. They are extremely similar to the M38 except for a few more water jacket plugs.

Bare block, cylinders need to be rebored or sleeved.
No visible cracks so you would need to have a machine shop check it out.
_________________
Ryan Miller
MVPA # 22010

wesk · Posted: Wed Mar 08, 2006 1:52 am Post subject:

Kendall,
M38 engines can be difficult to find. Then sometimes they start falling out of trees.

The only way to tell a CJ3A block (641087 casting, early or late) from a M38 block (641087 casting, early or late) is by the serial number on the small flat above the water pump. The differences are in the accessories. I can take a 1951 CJ3A short block (serial numbers shaved off) and install all the M38 engine accessories and cylinder head and voila I have a M38 engine.

If the block deck gets machined during an overhaul and the shop fails to restamp the serial number then you have a block that cannot be proven for which jeep Willys built it.
_________________
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

G740 · Member Joined: Jan 27, 2006 Posts: 499

I have a number of original M38 engines. All cores needing rebuilding. I can offer a 12/12 warranty on my rebuilt motors. www.midwestmil.com
Regards, John

wesk · Posted: Wed Mar 08, 2006 10:03 pm Post subject:

Now see what I mean. There they are falling off of John's trees over in Prior Lake MN. Laughing

Kendall,
John's a straight arrow and fair dealer so if you're thinking a commercially rebuilt unit with good service and backing then one of John's engines is an excellant way to go.
_________________
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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