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ISO MB cylinder head

Posted: Sat Mar 14, 2020 3:20 pm
by D_Conrad
I am looking for a cylinder head for my February 43 MB. I have a late war MB cylinder head for trade. Located in Tucson Arizona. Not sure of the casting date. If anybody can tell me where to locate that. But it does say both jeep and willys on it.

Re: ISO MB cylinder head

Posted: Wed Apr 01, 2020 8:54 pm
by Michael O.
The casting date is in Month/Day (ie, 9/5 for example in my photo) on the upper left corner above the casting number (639660 or 639660c for MB heads).

Re: ISO MB cylinder head

Posted: Tue May 05, 2020 9:23 am
by D_Conrad
Still searching

Re: ISO MB cylinder head

Posted: Thu May 07, 2020 2:29 pm
by Michael O.
What is the date of your late war head?

Re: ISO MB cylinder head

Posted: Fri May 08, 2020 7:41 am
by D_Conrad
Michael O. wrote:
Thu May 07, 2020 2:29 pm
What is the date of your late war head?
Looks like 3 24

Re: ISO MB cylinder head

Posted: Fri May 08, 2020 9:54 am
by Michael O.
That head has casting characteristics that are consistent with similar MB hads cast in 1945. There are noticeable differences with heads cast during the same March time period from 1944. I can say with absolute certainty that you head was indeed cast on March 24, 1945. It would be appropriate for an MB delivered in mid to late April 1945. Additionally it would be appropriate for an MB engine cast in the second or third week of March 1945.

I hope this helps you and others.

Re: ISO MB cylinder head

Posted: Fri May 08, 2020 10:14 am
by Scrumps
Hi,

Look here:-

http://ww2jeeps.com/htm/heads.htm

Scrumps

Re: ISO MB cylinder head

Posted: Fri May 08, 2020 4:57 pm
by D_Conrad
So I need a January 43 maybe december 42 head for my early February MB?

Re: ISO MB cylinder head

Posted: Fri May 08, 2020 8:34 pm
by Michael O.
I would recommend a Jan ‘43 head, yes. You can get more specific if you care to. What’s the casting date of the engine? Is it a Jan ‘43 block?

Re: ISO MB cylinder head

Posted: Fri May 08, 2020 8:38 pm
by Michael O.
Scrumps wrote:
Fri May 08, 2020 10:14 am
Hi,

Look here:-

http://ww2jeeps.com/htm/heads.htm

Scrumps
That page is good for general identification but lacks certain specifics...just be aware.

Re: ISO MB cylinder head

Posted: Sat May 09, 2020 7:39 am
by D_Conrad
Michael O. wrote:
Fri May 08, 2020 8:34 pm
I would recommend a Jan ‘43 head, yes. You can get more specific if you care to. What’s the casting date of the engine? Is it a Jan ‘43 block?
I'm honestly not sure how to tell. Where is that located?

Re: ISO MB cylinder head

Posted: Sat May 09, 2020 9:54 am
by Michael O.
The serial number would indicate a lot also but the casting date is located just ahead of the casting numbers, on the lower right side of the block. There is also a machining date on the bottom of the block on the machined oil pan surface near the rear corner by bearing retainer.

Re: ISO MB cylinder head

Posted: Tue Jun 09, 2020 7:34 pm
by Bangle 99
D. Conrad,

I have a block machined 2/4/43 if your block ends up being early Jan 43 or late Dec 42.


V/R

James D Teel II
Retired Police Sergeant/Bomb Tech
SFC OKARNG
Edmond, Oklahoma
'43 Willys MB/ITM jeep
‘43 SS Cars No1 Mk1 Lightweight Trailer
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