Model A motor serial number unexplained
 

Whats up with this motor number ? commercial use ??

Re: Model A motor serial number unexplained
 

Re: Model A motor serial number unexplained
 

To expand of what MikeK said, when the block was originally cast, nothing was done to the pad. That is, the texture of the pad was exactly the same as the rest of the block.

If the background of the pad does not look like the rest of the block, it has been restamped no matter what the number is or looks like.

Re: Model A motor serial number unexplained
 

I'm wondering why the water inlet has a stud and nut instead of a bolt and lock washer for the generator wire clip?

Here's a picture of an original number.

Re: Model A motor serial number unexplained
 

Got it ,thanks much...Kind of wondering why someone would do this .

Re: Model A motor serial number unexplained
 

engine change/re-build

Re: Model A motor serial number unexplained
 

Probably to match a new engine to the number already registered to that car, and did not know or care about including the letter A and stars.