GPW Engine Block

1941 - 1945, MB, GPW, Wanted jeeps or parts... list your needs.
Post Reply
JeepGuy42
G-Private First Class
G-Private First Class
Posts: 9
Joined: Thu Jun 13, 2013 8:03 am
Location: Houston, Texas

GPW Engine Block

Post by JeepGuy42 » Sat Nov 04, 2017 6:52 pm

Hello Everyone,

Part needed:
1942 GPW Engine Block or later

I am in need of a 1942 Ford GPW engine block. If anyone has one that they are willing to part with please let me know.
I just had one sent in to the Machine Shop and it seems that the block is just in too bad of shape do a work over on it. So if you have a good engine block or know of someone that has a block for sale please hit me up.

Regards,

Alan


User avatar
Michael O.
G-Lieutenant General
G-Lieutenant General
Posts: 6131
Joined: Wed Feb 26, 2003 12:29 am
Location: The Great State of Nebraska

Re: GPW Engine Block

Post by Michael O. » Sat Nov 04, 2017 8:17 pm

What is your GPW’s serial number?
Michael O’Connell

Too many jeeps…and a Dodge.

MVPA 13861

JeepGuy42
G-Private First Class
G-Private First Class
Posts: 9
Joined: Thu Jun 13, 2013 8:03 am
Location: Houston, Texas

Re: GPW Engine Block

Post by JeepGuy42 » Sun Nov 05, 2017 11:46 pm

The Frame SN is: GPW-53656 (my original frame) see photos below
Engine SN: 15548X (this appears to be an exchange engine) see photos below
Attachments
IMG_2547.JPG
IMG_2547.JPG (137.36 KiB) Viewed 733 times
360.JPG
360.JPG (160.4 KiB) Viewed 733 times

User avatar
Michael O.
G-Lieutenant General
G-Lieutenant General
Posts: 6131
Joined: Wed Feb 26, 2003 12:29 am
Location: The Great State of Nebraska

Re: GPW Engine Block

Post by Michael O. » Mon Nov 06, 2017 2:31 am

Yes, it’s a replacement block. The serial number should be on the oval pad on the opposite side of the block (unless the pad was left blank).

Out of curiosity, what exactly is wrong with your block?
Michael O’Connell

Too many jeeps…and a Dodge.

MVPA 13861

JeepGuy42
G-Private First Class
G-Private First Class
Posts: 9
Joined: Thu Jun 13, 2013 8:03 am
Location: Houston, Texas

Re: GPW Engine Block

Post by JeepGuy42 » Mon Nov 06, 2017 10:45 am

Michael,

Well, When we first got it all the pistons were seized in the cylinders, had to beat them out with a 2x4 and a sledge hammer. The machine shop had said that all 4 cylinders would need to be re-sleeved, the deck needs to be braised then re-decked, needs new valve seats. Overall it need just about everything. One of the head studs has pulled out so we had it repaired but the repaired stud did not hold. it has a lot of pitting on the deck and around the valve seats. It also has an oil pump stud broke off in it. The shop I took it to specializes in antique engines and they had stated that it would be better to find a block that was in better shape. I have attached some photos below. We have had the engine re-worked at another shop but we had some concerns regarding the pitting on the deck.

Alan
Attachments
375.JPG
375.JPG (218.23 KiB) Viewed 707 times
361.JPG
361.JPG (187.82 KiB) Viewed 707 times
371.JPG
371.JPG (213.05 KiB) Viewed 707 times
381.JPG
381.JPG (148.43 KiB) Viewed 707 times
363.JPG
363.JPG (255.89 KiB) Viewed 707 times

rjbeamer
G-Colonel
G-Colonel
Posts: 1406
Joined: Mon Jul 06, 2009 4:55 pm
Location: Oakdale Ca

Re: GPW Engine Block

Post by rjbeamer » Mon Nov 06, 2017 11:20 am

I agree with the decision to find another Block. Time to cut your losses especially with the fact that its a replacement engine. This is a money pit. The second machine shop should have told you the same thing as the first shop.

Roger

User avatar
Michael O.
G-Lieutenant General
G-Lieutenant General
Posts: 6131
Joined: Wed Feb 26, 2003 12:29 am
Location: The Great State of Nebraska

Re: GPW Engine Block

Post by Michael O. » Mon Nov 06, 2017 2:50 pm

Thanks for posting some photos so we can see what you are dealing with. I agree...she seems a bit rough...don’t scrap it though. Some guys like putting together “display” engines. Is it a “blank block” or is there a serial number on the raised pad?
Michael O’Connell

Too many jeeps…and a Dodge.

MVPA 13861

Adam
G-Lieutenant General
G-Lieutenant General
Posts: 4526
Joined: Sun Jul 20, 2003 6:03 pm
Location: Little Meadows PA

Re: GPW Engine Block

Post by Adam » Sat Nov 11, 2017 10:48 am

Looks like its 80 over? so its not resleeved. A replacement block is about as correct for your jeep as one that is one number off so no matter what it will be non matching. I would resleeve it, deck it after valve seats are in, port it to clean out the rust. Maybe shave the piston tops and get a custom copper gasket for the head to get compression correct. Hopefully it was magnafluxed, I see nothing about cracks in the water jacket or elsewhere. Nothing broken inside from beating on it? Doesnt need a centerline job, is crank cut or was it just put backin? Any damage to rods from beating on pistons? Anyway, if it will sit in the corner of your garage and become a mouse house, send me a pm with how much you want for it to get it out of your garage. I might make a table out of it or??

Adam

User avatar
Michael O.
G-Lieutenant General
G-Lieutenant General
Posts: 6131
Joined: Wed Feb 26, 2003 12:29 am
Location: The Great State of Nebraska

Re: GPW Engine Block

Post by Michael O. » Sun Nov 12, 2017 6:10 am

If I had it I would take it to Abraham’s and have them work their magic. There is no doubt in my mind that this block could be resurrected.

If you are selling this block I’d take a stab at trying to save it.
Michael O’Connell

Too many jeeps…and a Dodge.

MVPA 13861

User avatar
Chuck Lutz
Gee Addict
Posts: 26829
Joined: Wed Jun 28, 2006 7:00 am
Location: Jeep Heaven

Re: GPW Engine Block

Post by Chuck Lutz » Mon Nov 13, 2017 8:53 am

Point is....original GPW blocks don't grow on trees and while this one is in rough shape, everything it needs is probably what a good first-rate rebuild would entail:
boil out
pressure test
magnaflux
crack repairs
deck the block
new valve seats
swap out heli-coil for time-sert
sleeve back to STD
new valve guides
new valves
new pistons
rod check
turn crank
balance pistons, rods, crank, flywheel

As long as the first four items here pass muster, the rest is SOP. Most engine shops don't get it...we value original and matching number jeeps as that does add value.
Chuck Lutz

GPW 17963 4/24/42 Chester, PA. USA 20113473 (USA est./Tom W.)
Bantam T3-C 1947


Post Reply

Return to “MB GPW Wanted”

Who is online

Users browsing this forum: No registered users and 41 guests