wesk wrote:It's only an issue on the 54 or so and newer T90's. The earlier have the old fashion plain jane 3 set of numbers dates.
I doubt very seriously that there is one cast date code that fits all brands.
The most common casting screwup on the M38 was the test run of the new 804380 blocks in Jan 1952. Although the block blueprint at Willys was already changed from 641087 to 804380 the news never made it to the foundry and the test run blocks all had 641087 cast on them.
This block was suppose to be an 804380 block!
Engine stand ?
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RonD2
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Engine stand ?
Just curious.........is it good shop practice to set an engine on the floor like this with all the weight on the oil pan?
Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
- w30bob
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RonD2
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- 4x4M38
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That skid shield is a lot more then a piece then a piece of sheet metal and the oil sump on the Willys 134 series is tough enough to support the assembled engines weight with out the skid plate.
As Bob already said, "Good Shop" practice says you shouldn't but my experience over the last 50 years of wrencing on them is it doesn't hurt a thing with this Willys oil pan. There are engines I know cannot tolerate this practice.
As Bob already said, "Good Shop" practice says you shouldn't but my experience over the last 50 years of wrencing on them is it doesn't hurt a thing with this Willys oil pan. There are engines I know cannot tolerate this practice.
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. ... _album.php
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. ... _album.php
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RonD2
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Thanks! Still learning. Heavy gauge American steel, good stuff.
I was thinking about crushing that carefully torqued to 14-foot-pounds pan gasket by stacking 300+ pounds of motor on top of it might maybe cause some of the pan leaking I hear about?
I'm a rookie, and glad to know they can't be related..........
I was thinking about crushing that carefully torqued to 14-foot-pounds pan gasket by stacking 300+ pounds of motor on top of it might maybe cause some of the pan leaking I hear about?
I'm a rookie, and glad to know they can't be related..........
Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51
“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari
- 4x4M38
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- wesk
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An interesting set of concerns!I was thinking about crushing that carefully torqued to 14-foot-pounds pan gasket by stacking 300+ pounds of motor on top of it might maybe cause some of the pan leaking I hear about?
Torque is the preload or stretching of a fastener.
Excessive torque will dimple the pan in at the contact area of the bolt with the pan. This will actually over crush the gasket and prevent the desired tension from being achieved on that area of the gasket between the bolts.

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. ... _album.php
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. ... _album.php
