Why no motor script? |
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SeeJayTwo
Member Joined: 05 May 2014 Location: Desert Status: Offline Points: 138 |
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Posted: 11 Aug. 2022 at 12:59am |
I see Go Devil motors have "Jeep" and "Willys" embossed on top of head. I have the firing order, Intake Exhaust and tappet numbers on rear pass quadrant but not Script? 1946 SerNo 19xxx, block 641087.
What is the story on that? Thanks I did see this on KaiserWillys https://www.kaiserwillys.com/reconditoned-cylinder-head-magnufluxed-fits-41-53-jeep-willys-with-4-134-l-engine
Edited by SeeJayTwo - 11 Aug. 2022 at 9:39am |
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Oldpappy
Member Joined: 09 Apr. 2018 Location: Tennessee Status: Offline Points: 4905 |
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Early versions of the Willys L134, and Ford GPW versions did not have "Willys" or "Jeep" cast in the head. The Ford GPW did nave a script "F", and those heads are worth more to the GPW crowd.
Does it have a three or two bolt thermostat housing? If you post a picture of your head folks here can help identify it. Edited by Oldpappy - 11 Aug. 2022 at 10:15am |
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If you can't get there in a Jeep you don't need to be there!
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SeeJayTwo
Member Joined: 05 May 2014 Location: Desert Status: Offline Points: 138 |
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Head pic
Edited by SeeJayTwo - 11 Aug. 2022 at 11:57am |
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SeeJayTwo
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Also, the radiator has a "bladder"? looks like a rubber sheet across top or core, inside. What is that?
Edited by SeeJayTwo - 11 Aug. 2022 at 12:00pm |
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SeeJayTwo
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Here is the "original" very tight tan paint. I think?
Edited by SeeJayTwo - 11 Aug. 2022 at 12:02pm |
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oldscot3
Member Joined: 22 Oct. 2019 Location: texas Status: Offline Points: 545 |
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My GPW head has the Ford script just in front of the thermostat but one side is a little faint. Just below it, however, is embossed in raised letters "GPW". Should be easy to see.
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James 4:6 God resists the proud, but gives grace to the humble.
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wfopete
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Suffer Fools, Gladly!
U.S. Army Iraq Veteran (ret.) |
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SeeJayTwo
Member Joined: 05 May 2014 Location: Desert Status: Offline Points: 138 |
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Mostly hidden under oil filter bracket. But I see W2 and above that, up next to the flat pad, last two digits of a number........either 00 or OC
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oldscot3
Member Joined: 22 Oct. 2019 Location: texas Status: Offline Points: 545 |
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Sounds pretty much like that's what you have.
Interesting note, to me at least. In a side-by-side comparison the Ford head appears to have a slightly smaller combustion chamber. I haven't hit the research trail yet, but it makes me wonder if the GPW had a bit higher compression ratio. Maybe it's just mine; it could have been surfaced a time or two.
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James 4:6 God resists the proud, but gives grace to the humble.
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SeeJayTwo
Member Joined: 05 May 2014 Location: Desert Status: Offline Points: 138 |
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I think it's not Ford. I've been surfing and don't see that my numbers, so far, indicate Ford.
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Oldpappy
Member Joined: 09 Apr. 2018 Location: Tennessee Status: Offline Points: 4905 |
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The earlier L134 heads from Willys car engines did not have the logos, but they had two bolt thermostat housings.
Early to mid war Willys MB heads didn't have logos either. I am thinking that is probably what you have. Heads are interchangeable, but would be interesting to see a picture of the timing cover on the front, and the serial number boss on the block in front of the head. Here is a link to a site with pictures of various heads. |
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If you can't get there in a Jeep you don't need to be there!
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SeeJayTwo
Member Joined: 05 May 2014 Location: Desert Status: Offline Points: 138 |
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Looks like you are right Oldpappy, I see 63XXXX0C, 3 hole Tstat and no Willys or Jeep. The early ones were hybrids..,..or a replacement head. No number on pad, upper of water pump. 41-42? Weird.
Edited by SeeJayTwo - 12 Aug. 2022 at 1:00am |
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Oldpappy
Member Joined: 09 Apr. 2018 Location: Tennessee Status: Offline Points: 4905 |
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Could be a MB engine, or could be a civilian engine with a MB head. If it is a MB engine it has a chain drive cam, and if so it has the wrong timing cover for a chain drive cam.
The chain drive cam engines have a spring and plunger which rides against the end of the cam. The pin for that plunger is riveted to the timing cover which would show in the round area of the cover, and I don't see that in the picture. Need to determine whether this is a WW2 engine, if it turns out it is you need to have that plunger to keep the cam from moving in and out in the bore. The gear drive cam engines use a retainer plate behind the gear and the plunger was eliminated. I have came across several chain drive engines which have the wrong timing cover without the plunger. They will run that way but premature wear will develop into damage.
Edited by Oldpappy - 12 Aug. 2022 at 11:02am |
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If you can't get there in a Jeep you don't need to be there!
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SeeJayTwo
Member Joined: 05 May 2014 Location: Desert Status: Offline Points: 138 |
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block No. 641087 does not indicate MB or Civilian. So how to determine WWII motor or not?
Edited by SeeJayTwo - 12 Aug. 2022 at 11:44am |
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4151 |
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You've answered your own question. Cast number 641087 is not a WWII engine block. It is a CJ2A-CJ3A era engine block.
The head is still undetermined. You may find a cast number under the oil filter bracket.
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1- 1946 CJ2A
2- 1949 CJ3A |
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SeeJayTwo
Member Joined: 05 May 2014 Location: Desert Status: Offline Points: 138 |
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OK, I will check that when possible. thank you very much. Still getting the cobwebs off after 35 years of non op. Found a tag on Carter carb
636s D7
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Oldpappy
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Should have noticed the shape of the boss between the head and water pump. The shape of this on a WW2 engines is rounded on the ends. So, I agree it is a later engine and you don't need to worry about the cam or timing cover, it will have a gear drive cam.
I notice there is no oil filter on the engine. I have one if you need it. It is a Fram that came off a 48 CJ2A.
Edited by Oldpappy - 12 Aug. 2022 at 12:30pm |
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If you can't get there in a Jeep you don't need to be there!
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SeeJayTwo
Member Joined: 05 May 2014 Location: Desert Status: Offline Points: 138 |
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Good news. Earlier Pics show filter. took it off to see block casting number.
What are these???? Edited by SeeJayTwo - 12 Aug. 2022 at 12:37pm |
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