1942 Ford GPW #20385883 rebuild

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crazychevelleman
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Re: 1942 Ford GPW #20385883 rebuild

Post by crazychevelleman » Tue Jul 16, 2013 9:26 pm

Here is my new Ford F-150 to pull my Ford Jeep. :roll:

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Last edited by crazychevelleman on Tue Oct 08, 2013 3:55 pm, edited 2 times in total.
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crazychevelleman
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Re: 1942 Ford GPW #20385883 rebuild

Post by crazychevelleman » Wed Jul 17, 2013 3:45 pm

Got the NOS ring & pinion gears in today, some are "F" stamped. I cant wait to install them.

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crazychevelleman
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Re: 1942 Ford GPW #20385883 rebuild

Post by crazychevelleman » Tue Jul 23, 2013 8:39 am

I got the Pinion tool and will soon be ready to start the rebuild. I also picked up an NOS Scherr Tumico Depth Micrometer for the job.

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Re: 1942 Ford GPW #20385883 rebuild

Post by thidisbogus » Tue Jul 23, 2013 6:49 pm

Nice truck! A real step up from your little one....

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Re: 1942 Ford GPW #20385883 rebuild

Post by zepher11 » Tue Jul 23, 2013 8:06 pm

Yes, nice truck you have now. With your forum handle I was expecting another brand, but those little Ford Jeeps have a way of growing on you. :)

I saw that you were going to build a rotisserie out of three engine stands for your tub. Were you able to get that completed? I made one for my tub with three stands I scored for about $75 to $80. I just posted an ad on Craigslist and I had people selling them to me for $20 to $25 each. I posted pictures on my thread when I build it. If you haven't got to it maybe they may be of some help. By the way, your project is looking great! Keep up the great work.
Zeph

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crazychevelleman
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Re: 1942 Ford GPW #20385883 rebuild

Post by crazychevelleman » Thu Sep 12, 2013 11:26 am

Today I finally got started on the front differential reassembly. I replaced all bearings, the ring and pinion and new shims. Here are a few pics of my calculations. The pinion is engraved with “+5” which indicates that its ideal checking distance is Five thousandths of an inch greater than nominal, or 2.250” + 0.005” = 2.255”. We prayed because it was hard for me to figure out seeing I have never did this before and there was no one to ask. The Lord helped us, giving us wisdom to solve the problem. The allowed tolerances are +2 or -2 of 2.255. we are 2.254. I would call that a dead on pinion alignment. Considering, that the Ordnance department had a .033 total of shims and that would have made the set up go clickety clack . It should purr like a kitten going down the road.

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Andrew OBryan
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Re: 1942 Ford GPW #20385883 rebuild

Post by Andrew OBryan » Thu Mar 20, 2014 8:55 am

Looks good keep going
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crazychevelleman
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Re: 1942 Ford GPW #20385883 rebuild

Post by crazychevelleman » Wed May 28, 2014 10:04 am

NOS Ford GPW connecting rods that I purchased for my rebuild. Rods 1 and 3 cyl. I also have 2 and 4 cyl.
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Re: 1942 Ford GPW #20385883 rebuild

Post by thidisbogus » Wed May 28, 2014 10:53 am

NICE

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Re: 1942 Ford GPW #20385883 rebuild

Post by wo2jeeper » Wed May 28, 2014 1:17 pm

crazychevelleman wrote:NOS Ford GPW connecting rods that I purchased for my rebuild. Rods 1 and 3 cyl. I also have 2 and 4 cyl.
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please do check them before installing. They mostly are correct but I had one that wasn't. And make sure the are in balance of their weight. If you checked that you should have a very nice set of rods.

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crazychevelleman
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Re: 1942 Ford GPW #20385883 rebuild

Post by crazychevelleman » Thu May 29, 2014 7:25 am

wo2jeeper, I am by no means an expert. will you be so kind as to explain to me how to check them? Please. Also here are pics of 2 & 4

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Re: 1942 Ford GPW #20385883 rebuild

Post by wo2jeeper » Fri May 30, 2014 1:23 pm

I used plastigauges, they come in very handy. Just google and you will find the answer. One of mine was just to tight, after 2 sets of bearings I found out that one new rod was out of specs. So messure to know, don't install blind thinking it will be correct right out of the box. Perhaps I just only had bad luck, but you never know.

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Re: 1942 Ford GPW #20385883 rebuild

Post by gearhead » Fri May 30, 2014 2:12 pm

Ask a machine shop to do a dimension check if you are not sure. Torque the caps and check the big ends for size/roundness.
They can check for twist too.
I have had a few NOS engine parts that were not quite in spec.

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crazychevelleman
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Re: 1942 Ford GPW #20385883 rebuild

Post by crazychevelleman » Tue Jun 10, 2014 6:07 am

Update: Engine build is progressing, the rods were checked all NOS 1 & 3 and 2 & 4. I am doing a little upgrade and having the engine fully balanced, 3 angle valve job, hardened seats and stainless steel valves. The block is being sleeved back to original with Std. pistons and rings. I tried to find a standard crankshaft but could not. Hope to give you fellers new updates and pics soon. Be encouraged and finish your build! GOD Bless America, GOD shed his Grace on U.S. !
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Re: 1942 Ford GPW #20385883 rebuild

Post by Old Pal » Thu Jun 12, 2014 10:39 pm

What did you coat the inside of your transfer case with? It doesn't look like standard red oxide?
1942 GPW Restoration Thread

Looking for 4 - 3/8" x 1" NF "F" bolts

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