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.
Sun Jun 29, 2014 8:33 am
p0wer unit block
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!
Sun Jun 29, 2014 11:06 am
As promised, here are the pics of the NOS block I have:
Hand-stamped part number
Block serial number removed
Unusual "clock" cast in the block near PN and Casting code
If you have any questions, I will do the best I can to answer them.
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.
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.
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?
Mon Jun 30, 2014 5:54 pm
There was something stamped there 60 years ago I suppose......but nothing discernable now.
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