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Subject: 8N serial number

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Ward    Posted 10-30-2017 at 22:38:24 [URL] [DELETE]        [Reply] [Email]  
  • 8N serial number
  • My first 8N: My SN is located on LH lower front of engine; but I am confused:
    8NII6I68*(star) steel sleeves I understand. How do I read the rest of the number is
    the I'S read as 1's?

    Tim Daley(MI)    Posted 11-01-2017 at 06:08:22 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N serial number
  • In addition to what I stated below, the early 8N's had a casting date code on a boss tag attached to the starter pocket -SEE PICTURE below. The date code is defined alpha-numerically as: 1st = Letter A-L, for month block was cast, 'A' being January. 2nd = 2-digit numeral for day of month; 3rd = single digit for year, i.e. '7' equals 1947. Thus my early 8N casting code tag has "I167" defined as cast on September 16, 1947. Know this too, that engine block serial numbers do not define an exact date tractor was manufactured.` It's the casting date code tag that identifies when the block was cast, not machined and tractor assembled. Cast iron needs 30 days to cure before machining. Blocks were cast, put in a hold area at random, then pulled at least 30 days later at random, and sent to the machine shop. Next they were pulled, at random, to an assembly area where the engines were assembled, not the entire tractor, just the engine. No serial number had yet been assigned at this point. Serial numbers were hand stamped on the blocks AFTER they wee assembled and passed QC testing. Only then was a serial number stamped. Thus, if your s/n is as you say, "*8N-II6I68* then it falls into the 1948 category. What does your engine casting code date tag have? Again, the important fact to consider is whether a front mount or side mount, 6-volt or 12-volt.

    Tim Daley(MI)

    Allen Miles    Posted 11-04-2017 at 21:19:49 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8N serial number
  • Tractor is not home yet. I did view the distributor today where the tractor is at now and it is a front mount. The electrical was just converted to 12 volt. Tractor has no lights at this point. I forgot to look at the boss date. Which is the most desireable, front or side. Thanks.

    Tim Daley(MI)    Posted 10-31-2017 at 05:28:27 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N serial number
  • HiYa Ward-
    Welcome to the wonderful world of Ford N-Series Tractors. You have come to the right place. You will find much info in our HOW-TO’s; MANUALS; and HISTORY forums as well as in the archives. As far as the serial number goes, it only identifies what year the block was cast, more notably on 8Ns with the engine casting date code on the starter pocket. FORD used the letter "I" to designate numeral #1, lower case "b" for numeral #6 and inverted for numeral #9 -see bulletin. The important thing is to recognize if it has a front mount distributor or angle (side) mount distributor; generator/voltage regulator with 6-volt/positive ground system or has been converted to 12 volts and if so if done correctly. Originally the STAR (*) symbol designated steel cylinder liners/sleeves on all FORD engines. Mid-8N production saw the change being made to cast iron sleeves and then the s/n symbols were changed to the (◊) diamond symbol. They don’t make and sell steel sleeves anymore and chances are your engine may have been rebuilt at one time and cast iron sleeves inserted anyway, so don’t assume anything. If a rebuild is in order, do not buy any parts until block is stripped naked and you see what exactly is going to be needed. Cast iron sleeves will require block to be bored out larger. If you are new to tractors, Ford Tractors especially, and you don’t already have these, get yourself the essential manuals every N-Owner needs. Also, go to John Smiths’ site for more info as well –SEE LINK.



    Tim Daley(MI)

    AL CT    Posted 10-31-2017 at 00:04:28 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N serial number
  • Ones that look like I's. so your number is one, one, six, one, six, eight.

    Ward    Posted 10-31-2017 at 00:46:19 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8N serial number
  • 1948 correct? Thank you!

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