Kohler K series crankshaft interchange

[BOBTHEBOPPER 3]

I have many parts for the old K series kohler engines and would like to know if the 14 HP and 12 HP K series crankshafts are interchangeable. All the rod and crank journals are the same size, the stroke is the same. I am not sure if the crank and piston assembly would be out of balance using the 14 with the 12 HP piston in a 12 HP block.  Thanks for any help.

[rmaynard 14,851]

Attached is the Kohler Crankshaft Reference Guide. That should have your answer.

 

kohler-crankshaft-reference.pdf

[oliver2-44 8,813]

Thanks @rmaynard  I needed that crankshaft info also!

[Hossenfeffa 49]

Although the 12 hp and 14 hp crankshafts are the same dimensionally, the counter weights on the 12 hp crank are ground flat on the bottom, the 14 hp crankshafts are not. .If you use a 14 hp crank with a 12 hp bore, or visa versa, you will end up with a nice vibrator

[Shynon 7,435]

1 hour ago, Hossenfeffa said:

Although the 12 hp and 14 hp crankshafts are the same dimensionally, the counter weights on the 12 hp crank are ground flat on the bottom, the 14 hp crankshafts are not. .If you use a 14 hp crank with a 12 hp bore, or visa versa, you will end up with a nice vibrator

and then probably some un repairable issues in the near future.

[BOBTHEBOPPER 3]

Thanks guys, You answered my question. Good show.