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b12t power unit or RC motor?
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AintCheatnAintTryn View Drop Down
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Joined: 27 Feb 2025
Location: pennsylvania
Points: 27 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AintCheatnAintTryn Quote  Post ReplyReply Direct Link To This Post Topic: b12t power unit or RC motor?
    Posted: 2 hours 45 minutes ago at 6:01pm
I picked up a. motor the other day with a plate on the Bell housing that says I have a power unit, serial number PU 85262 B but the number stamped into the block beside it says RC 53517 PA.
aside from the power unit governor, is there I difference between the two?
am I getting confused by the numbers or does it sound like someone attached an RC motor to a power unit drive?
who needs practical experience when you have a computer, a calculator and ideas? me.. dumb ideas get expensive fast.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 93207 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 2 hours 23 minutes ago at 6:23pm
i always thought the RC was a Factory Replacement for the CE engine ?
Like them all, but love the "B"s.
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AintCheatnAintTryn View Drop Down
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Joined: 27 Feb 2025
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Points: 27 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AintCheatnAintTryn Quote  Post ReplyReply Direct Link To This Post Posted: 2 hours 3 minutes ago at 6:43pm
perhaps, honestly I don't know much about anything other than the wc-d17.
i did however learn since posting I got mixed up on the block stamp, it's cr, not rc.
who needs practical experience when you have a computer, a calculator and ideas? me.. dumb ideas get expensive fast.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 93207 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 5 minutes ago at 8:41pm
well... this is what GOOGLE said..
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On an Allis-Chalmers engine, the CR prefix in the serial number indicates a combine-spec engine (such as for Allis-Chalmers harvesters) built on a standard 125 cubic-inch block. 
Key Details
  • Higher RPM: It runs about 200 RPM faster than a standard tractor engine block.
  • Special Oil Tray: It typically features an oil tray on the valve studs for better lubrication during stationary or high-angle combine operation.
  • Interchangeability: It is fundamentally a 125 CID engine (similar to the CE blocks used in the Model B, C, and CA), which is why these combine engines are frequently found swapped into standard Allis-Chalmers tractors. 
Like them all, but love the "B"s.
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