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Engine Help => Kohler Engines => Topic started by: Nod on February 05, 2014, 07:21:53 AM

Title: Interchangable crankshafts??
Post by: Nod on February 05, 2014, 07:21:53 AM

 Hi,  I've looked thro' the History of post's here and not found this subject. :(

 Nearly everybody says the CV/CH 25,27 and 30 HP crankshafts are interchangeable. I bought one with a smaller PTO shaft size, matched them up and my original shaft has a small sholder next to the camshaft drive cog? This fits into a very flat bearing which is also shimmed before it then fits into the block side coverplate.
 To come around this problem do I just need to buy another side plate, or have a ring made to fit the crankshaft??

   Open to any surrgestions, :D

MM-D.   
Title: Re: Interchangable crankshafts??
Post by: Huffy044 on February 05, 2014, 10:49:01 AM
In the end all of my engines ran a small journal crank in a big bore block, there are many bushings available out there that come impregnated with oil, not that they have to be, any machine shop can make you one.
Title: Re: Interchangable crankshafts??
Post by: Nod on February 06, 2014, 02:18:48 AM
  Cheers for the quick reply :)
Title: Re: Interchangable crankshafts??
Post by: Huffy044 on February 06, 2014, 11:43:38 AM
One more thought, look for the stock drain hole (if there is one) and be sure to drill it in the bushing. Also I make a small grove starting inside the block and lengthwise on the bearing stopping just before the outer edge of the bearing. this gives sone drain back and a small place for oil to stay after the engine is off. I also make it a slight press fit and glue it in with locktite, not the nut retainer one but 609 designed to really keep it tight.
Title: Re: Interchangable crankshafts??
Post by: FlatheadPuller on February 06, 2014, 05:40:30 PM
Just buy the correct Torrington bearing that goes on it. Some commands had a Torrington bearing.