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Author Topic: Interchangable crankshafts??  (Read 709 times)
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Nod
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« on: February 05, 2014, 07:21:53 AM »


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

 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, bigsmile

MM-D.   
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Huffy044
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« Reply #1 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.
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« Reply #2 on: February 06, 2014, 02:18:48 AM »

  Cheers for the quick reply smile
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« Reply #2 on: February 06, 2014, 02:18:48 AM »

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Huffy044
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« Reply #3 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.
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ARMA Sportsman of the Year 2008
ARMA South East Region Mini 2009, 2010, 2011,2012
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Maxton NC Model A Record Holder 118.54
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« Reply #4 on: February 06, 2014, 05:40:30 PM »

Just buy the correct Torrington bearing that goes on it. Some commands had a Torrington bearing.
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Dennis Bazzett
Grandville Michigan
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