M38A1 Rebuild Help Wanted Please?

1952 - 1968, M38A1, M170, questions, discussions, regarding anything related to the M38a1 series.
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scotbish
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M38A1 Rebuild Help Wanted Please?

Post by scotbish » Fri Jan 11, 2013 8:43 am

Hi, This is my first restoration project and I'm having a few problems,
Could someone please post or send me photos of the engine mounts that should be on this jeep? I bought it partly dismantled and the engine is still in the chassis but seems to be sitting too high and when I put the air intake on the bonnet won't close. I have looked at the engine mounts and they are definitely some kind of bodged affair. I Really need help to sort this out and it would be much appreciated if you could help???

I'm also having problems identifying the engine which has the number P41409B
The Chassis 73284
Vehicle id Number 2062858
Do These numbers tie up and make sense to anyone???
Many Thanks
Dave

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skyjeep50
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Re: M38A1 Rebuild Help Wanted Please?

Post by skyjeep50 » Sun Jan 13, 2013 9:54 am

Perhaps if you post a few pics of your jeep it would help. Usually the M38A1 had a good amount of under hood clearance for the engine so its hard to tell where your problem begins and ends. You could start by going to the Willys M Jeeps http://www.willysmjeeps.com" onclick="window.open(this.href);return false; site and downloading all the manuals for your jeep - parts and maintenance manuals. They are in the "Downloads" section. Then you can trace your clearance problems. Your engine serial number (engraved on the flat above and behind the water pump) should start with "MD" - Willys designation for the M38A1.
1 - M38
1 - M38A1

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timjuhl
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Re: M38A1 Rebuild Help Wanted Please?

Post by timjuhl » Sun Jan 13, 2013 6:46 pm

Definitely need some photos.

The M38A1 has a side draft carburetor with the air cleaner mounted to the firewall and connected by a hose. There is plenty of clearance under the hood (bonnet). Does your Jeep have the 4 cylinder Hurricane engine installed or has it been replaced with a different power plant?

Good luck with your project.

Tim
Aeronca L16-A, 1952 Willys M38A1 - Elderly winged or wheeled vehicles are my downfall.

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wilfreeman
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Re: M38A1 Rebuild Help Wanted Please?

Post by wilfreeman » Sun Jan 13, 2013 8:45 pm

You can also check out Wes's album for pics to compare yours to - he has a pic of just about anything you would need to see on an m38a1
Matt
1953 M38a1
1964 USMC M38a1
1968 M35a2
M100, M101a2, M105a2
Http://wilfreeman.wordpress.com (M38a1 build blog)

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Dokimos
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Re: M38A1 Rebuild Help Wanted Please?

Post by Dokimos » Tue Jan 15, 2013 6:05 am

Here are some pictures of the engine sitting in the frame, hope they are helpful

Image

Image

Image


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SB5477
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Re: M38A1 Rebuild Help Wanted Please?

Post by SB5477 » Tue Jan 15, 2013 1:48 pm

The M38A1 has a side draft carburetor with the air cleaner mounted to the firewall and connected by a hose.
The M38A1 has a down draft carburator only the airhorn is angled at 90 degrees.

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timjuhl
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Re: M38A1 Rebuild Help Wanted Please?

Post by timjuhl » Tue Jan 15, 2013 6:29 pm

From the pix it looks pretty much correct. . What in particular do you think is "Bodged"? If you are wondering about the rods flopping around in the front mounts those support the radiator and identify it as probably dating from 1952-3.

The carburetor looks correct as does the cross-over tube. The M38A1 used the Carter YS 950 S. Do you have an air cleaner for it?

I see it has a power take-off installed. What does it connect to?

It looks like a nice Jeep and you are doing a very nice job of restoration. What kind of shape is the body in?

Good luck with your restoration!

Tim
Aeronca L16-A, 1952 Willys M38A1 - Elderly winged or wheeled vehicles are my downfall.

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skyjeep50
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Re: M38A1 Rebuild Help Wanted Please?

Post by skyjeep50 » Fri Jan 18, 2013 3:36 pm

Everything looks like it is supposed to for a M38A1 engine installation. But you didn't post pics of the body. By any chance are you trying to install a M38 (flat fender) tub? The M38 didn't have the "streamlined" raised hood of the M38A1 and there isn't enough clearance for the F-head engine. The M38 used the L-head or flat head engine.
Here's a comparison pic between my M38 and M38A1.
Image
1 - M38
1 - M38A1

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Re: M38A1 Rebuild Help Wanted Please?

Post by wardo74 » Sat Jan 19, 2013 11:36 am

If you haven't done so already get the military manuals, you can download them for free. Just google the manuals you want. Here is where I got mine:

http://archive.org/search.php?query=cre ... M9-8014%22" onclick="window.open(this.href);return false;

Also there is a guy who has a website dedicated to the restoration of M38A1's

http://www.m38a1.com/" onclick="window.open(this.href);return false;


GOOD LUCK!!
First Love (& car): 1957 Willys CJ5
1999 graduate Vehicle Research Institute. Western Washington University
Current Project: 1952 M38A1 Ser # MD 26799

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