M engine serial number to long

fastfarmall

Well-known Member
I am looking at a M, but the serial number on the engine has no M.in front and 1 to many digits! It is FBK 1232288. The tractor serial no is FBK 205319 X1,that's weird isn't it?
 
No,not weird. Normal. That SN indicates it is a 1949 model.IH made 297,717 M tractors. Starting at 501(1939),ending at298,218.(1952)
 
Engine serial numbers are not identical to the tractor serial. There were W series tractors, Power units, dozers, and cotton pickers with that engine. Jim
 
Engine prefix should be FBKM. If part of the M is not stamped good it may look like a 1. But 232228 is still to high to be in the tractor serial number if that is the case. Engine number should be around 8000 or 9000 lower than tractor. Does the date code on block end with a T? Engine number should end with X1 to match tractor also. If it has the number digits you posted, I have no idea.
 
Just pointing out that before C-264 engines they used a different prefix for engines. like W-6 was WBKM and different models of 6 tractors used a different prefix. Also power units and track machines used there own engine prefix.
 
Is it possible the person writing or the person reading added a digit by accident when transferring the number to paper? I have done that or the person did that while writing. Just a thought.
 
Tractor serial number 205319X1 would probably have engine number 197319 originally. If the 1 is dropped from the front of number you posted the block should have a T date code for 50. If the last number is dropped a 46 or 47 date code. 49 would be a S date code if matching tractor since the tractor serial was made late in the year.
 
I forgot to read the date codes,it was up on a trailer,so no room to stand. I had him read it to me 2 times,but i thought of that to D,Slater thanks every body for your input! but most of the M's the last two digits match, but not always,, i have found!
 

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