Plug on engine block

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RaymondDurban
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Re: Plug on engine block

Postby RaymondDurban » Sat Jun 28, 2014 9:28 pm

Sure Bill, that would be great. I'm pretty sure that your block will have a PN of 529413R1 and no stamped SN.

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Re: Plug on engine block

Postby Rob in NH » Sun Jun 29, 2014 8:31 am

here are the pics ImageImageImage
Image

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Re: Plug on engine block

Postby Boss Hog » Sun Jun 29, 2014 8:33 am

p0wer unit block
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RaymondDurban
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Re: Plug on engine block

Postby RaymondDurban » Sun Jun 29, 2014 10:40 am

Rob in NH wrote:here are the pics

Thanks for the pics Rob. As Boss said, yours was originally in a UC-60 power unit. I have recorded the numbers into the upcoming "Power Unit" section of the database.
What I don't have an answer for is how the original poster to this thread has basically the same block, with the same extra casting, but his PN is that of a regular Cub engine (251341 R7). I guess his slipped through the cracks in the quality control section of IH!

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Re: Plug on engine block

Postby Bill Hudson » Sun Jun 29, 2014 11:06 am

Raymond,

As promised, here are the pics of the NOS block I have:
The plug
Image
Hand-stamped part number
Image
Block serial number removed
Image
Casting code
Image
Unusual "clock" cast in the block near PN and Casting code
Image

If you have any questions, I will do the best I can to answer them.

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Re: Plug on engine block

Postby RaymondDurban » Sun Jun 29, 2014 12:13 pm

Bill, I'm not so sure that your block is in fact "NOS". I would venture to say that is has been reworked by IH for some reason and then the original SN was removed. Your block was cast in June of 1952, way before Palmer started using these blocks for marine use. I'd guess that is was originally in a U-1 power unit with a SN somewhere in the UCUBM 39xx range.

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Re: Plug on engine block

Postby Harold R » Mon Jun 30, 2014 8:38 am

I have one of these as well. I'll take a few pics later. It came to me in a post demonstrator range '50 cub.

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Re: Plug on engine block

Postby Harold R » Mon Jun 30, 2014 9:41 am

Nothing much to see......it appears the engine sn and block part number were ground down for some reason. Casting date has it as an early '54. Tractor sn is 114xxx, which is irrelevant I suppose.
Image
Image
Image

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Re: Plug on engine block

Postby RaymondDurban » Mon Jun 30, 2014 4:14 pm

Harold, I can't tell from the photos, but was the PN re-stamped into the cast after the original was ground off (like Bill's above)? If so, is it the same PN?

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Re: Plug on engine block

Postby Harold R » Mon Jun 30, 2014 5:54 pm

There was something stamped there 60 years ago I suppose......but nothing discernable now.
Image


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