Iowa Willys MB Project

If you have an unrestored WWII jeep, we would like to see pictures, and hear your comments. NO EBAY or COMMERCIAL SALES.
Mark Jesic
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Re: Iowa Willys MB Project

Post by Mark Jesic » Fri Aug 11, 2017 1:07 pm

Great pictures Madcolars, looking at things you may find a few more surprises, but as many jeep owner on here will tell you, it will be well worth it. Please keep us updated.

70th Division
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Re: Iowa Willys MB Project

Post by 70th Division » Sun Aug 13, 2017 3:52 pm

Hello,

Great progress !!
Keep us updated, those cylinders look really good, no water in them :D

Coming right along there !!!!!!

Ray

MadCoLars
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Re: Iowa Willys MB Project

Post by MadCoLars » Tue Aug 22, 2017 8:47 am

Worked on the Willys this past weekend. Got the radiator and motor accessories pulled and the motor removed. Found broken flanges on both the intake and exhaust manifold, so I tracked down some good used replacements from a fellow in Minnesota. Laying in one of the intake ports was a small washer or hole saw slug. Not sure what it is or how long it has been in there. You can see the impression in the port where it was sitting. Strange.

Need to finish pulling the motor apart and get it to the machine shop this week and start cleaning and painting the engine accessories. Pulled the valve cover and everything there looks clean and in good shape.

There is a small aluminum tag wired to the brass fitting in the block which serves the oil pressure gauge. Looks to have "C603" stamped on it. Anyone know what this is for?

After the motor was out I noticed numbers stamped on the top of driver's frame rail: 297619. This matches the number on the title! Nice to get confirmation the serial number is correct since the frame tag and data plates are missing.
Attachments
Motor Out.JPG
Pulling the motor
Motor Out.JPG (227.88 KiB) Viewed 352 times
Frame Stamp.JPG
Serial number stamped into the top of the driver side frame rail in the engine compartment
Frame Stamp.JPG (232.2 KiB) Viewed 352 times
Motor Intake Port.JPG
Looks like a slug from a hole saw in the intake port??
Motor Intake Port.JPG (220.69 KiB) Viewed 352 times
Motor Intake.JPG
Broken intake flange
Motor Intake.JPG (207.61 KiB) Viewed 352 times
Motor Exhaust.JPG
Broken exhaust flange
Motor Exhaust.JPG (176.76 KiB) Viewed 352 times
Motor Tag.JPG
Tag on oil pressure gauge fitting
Motor Tag.JPG (213.51 KiB) Viewed 352 times

70th Division
Sergeant Major of the Gee
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Re: Iowa Willys MB Project

Post by 70th Division » Tue Aug 22, 2017 9:09 am

Hello,

Nice photos there, the frame number could have been stamped by the British.
Since your engine is out and on the way to recovery, you can look on your steering gear box.
It may have some REME rebuild stampings and dates on it.
The British jeep I have has markings stamped from rebuilding of the gear box.

The tag on the oil line is interesting and maybe a Brit can chime in on it ?

That washer thing may have been just a "plug" someone put in the exhaust leak where the gasket deteriorated.
You can see it had exhaust leaks along the manifold/gasket seal area.

Keep up your progress !!

Best Regards,

Ray

MadCoLars
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Re: Iowa Willys MB Project

Post by MadCoLars » Wed Sep 06, 2017 3:32 pm

Got back to the Willys this weekend. Took the motor apart so in preparation for the trip to the machine shop. Overall things looked good. Cam, crank, and pistons looked OK. Bearings had some wear, may order a new set once the machine shop checks it out. Discovered a few more things about the engine. This is a Willys block, but the connecting rods are GPW. Another British mix and match, consistent with the overall rig. The rods numbers didn't match the cylinder numbers, I'm guessing they used what they had around and didn't bother to match them up. Had a broken valve spring, glad I ordered a new set. The block has a date of 12-17-43 stamped on the bottom.

The most interesting thing I found was thin brass shims between the main bearing caps and the block. Will need to see what the machine shop thinks of these. Anyone else find these during a motor tear down?

It looks like the cylinders have been sleeved. I did a quick measurement with a dial caliper (not the right tool, but it is what I have) and it was roughly 3.120", so very close the bore spec of 3.125". Will have the machine shop check it as well while they have it.

Crank pulley key is being stubborn along with a few studs. Figured the machine shop could deal with those items as well. Time to start cleaning and prepping parts for when the motor comes back!
Attachments
IMG_7646.JPG
Broken valve spring
IMG_7646.JPG (215.66 KiB) Viewed 263 times
IMG_7650.JPG
GPW connecting rods in a Willys block
IMG_7650.JPG (170.55 KiB) Viewed 263 times
IMG_7652.JPG
Block date stamp
IMG_7652.JPG (200.02 KiB) Viewed 263 times
IMG_7653.JPG
Brass shims under main bearing caps
IMG_7653.JPG (220.12 KiB) Viewed 263 times
IMG_7656.JPG
Pile of motor parts
IMG_7656.JPG (232.48 KiB) Viewed 263 times


Leo H Jankowski
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Re: Iowa Willys MB Project

Post by Leo H Jankowski » Wed Sep 13, 2017 12:55 pm

btt

RedCross184
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Re: Iowa Willys MB Project

Post by RedCross184 » Thu Oct 05, 2017 9:39 pm

Nice images and a great post and with that said live long and prosper...
"No trees were harmed in the creation and distribution of this post.

MadCoLars
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Location: Iowa

Re: Iowa Willys MB Project

Post by MadCoLars » Mon Oct 23, 2017 5:33 pm

Finally getting back to work on the MB. Purchased a blasting cabinet to prep parts and pieces for paint. In the process of pulling the transmission and transfer case. Will post more pictures once that is out. Also pulled the grill and some other stuff to facilitate the process. Need to remove the brake pedal arm as it is not operating freely from the clutch shaft. Tried to remove the cap nut for the transmission shifter, no go. Pondering the use of bigger tools/more persuasion or just pull the whole top cover off. I was tempted at times to pull the body off and fix some of the corroded braces and body sections, but I think I will save that for next winter. Hope to drive this thing before the snow flies!! Still waiting for the motor to come back from the machine shop.

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