M38 head

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gamillerman
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M38 head

Post by gamillerman »

800376 is the correct casting number for an M38 head; right?
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kenperkins
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Post by kenperkins »

yes, and look for the water pump bypass on the front
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wesk
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Post by wesk »

800376 is the correct Willys factory installed head. A generic later 60's & up head (IE 807763) would be ok for a non-factory resto.

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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
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gamillerman
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Post by gamillerman »

Ok thats what the number is of the head I am looking at. Havent found out yet if the bypass hole is there but is the head is the correct number the threaded hole for the bypass hose should be there.

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gamillerman
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M38 head.

Post by gamillerman »

I just recieved a photo of the 800376 head I am looking at and it does not have a hole in the front for the bypass hose. Is this possible? Though the 800376 casting was exclusive to the M38 engines.
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wesk
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Post by wesk »

No the 800376 casting was not exclusive to the M38 but that casting was probably available with different machining actions done on it. If Willys assigned the same part number to the head as the casting number for the M38 then that indicates the 800376 basic delivered head is as we've always seen it with the raised boss for the bypass hose drilled and tapped. If Willys had an application for the head that wasn't drilled and tapped then it would have the basic casting number on the head and a different part number in it's parts book.
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
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gamillerman
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M38 Head

Post by gamillerman »

The Head has the raised boss but there is no hole there.
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wesk
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Post by wesk »

There are several Post WWII heads with the raised boss both drilled and undrilled. There's no poblem with drilling the boss to insert the hose nipple.
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
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