Crank Identification

[Filo1420]

Am I correct in assuming this is a Mercury 4” crank? What do the numbers represent? Thanks for your help.

 

[ford38v8]

6" across the throw should be Merc. Here's an article containing more info on Merc cranks:

http://www.goldengatev8.org/docs/merccrankid.pdf

 

[Filo1420]

Thanks for the help. So glad I found this forum.

 

[Ol' Ron]

This could be a 53 crank made with the shell molding process. I've seen several Ford cranks made with this process, but never a merc. in 54 all the "Y" block cranks were made with this process.. Much stronger crank.

 

[Filo1420]

Thanks for the info. Guess the only way to be certain is to measure the stroke. Any idea what the numbers indicate?

 

[Filo1420]

Just measured the stroke, it’s 4”.

 

[Kurt in NJ]

R(ods) .010, (M)ains .010, ----usually marks from regrinder

 

[Filo1420]

Thanks. I’ll be taking it and the block to the machine shop pretty soon. Hopefully they can save them both.