s/n

[iowaboy]

What do the stars mean on the serial number?

 

[Tom N MS]

Jeb2N said If I"m not mistaken, I beleive the stars meant the engine had the 0.040" Thin wall steel sleeves, and diamonds meant it had the thicker 0.090" cast iron sleeves. Could be the other way around, but i"m pretty sure i got it right. It just refers to the sleeves.

 

[Bruce (VA)]

You got it right.
50 Tips

 

[Tom N MS]

From YT site ---
Ford Used the letter "I" to stamp the number "1".
9N/2N serial numbers start with 9N.
8N serial numbers start with 8N.
NAN means that it is a kerosene burning engine.
NNN means that it is a industrial engine.
A diamond symbol that is stamped before and after the serial number means that it has cast iron sleeves.
A Star symbol before and after the serial number means that it has steel sleeves.