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John Deere 112 engine swap

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#1 mismith OFFLINE  

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Posted August 14, 2016 - 12:42 PM

I have a nice 1970 John Deere 112 with a Tecumseh HH 100. No spark and I suspect the SSI ignition is bad. I know I could replace it with the HET unit from overnight solutions. But I have found a 212 complete tractor with the K301 Kohler. Is this a direct engine swap? I know starting in 1969 you could opt for a K241 Kohler. I'm thinking maybe my bracket for the belt cover won't work on the Kohler? Any issues you can think of? I can get the entire 212 tractor for $150. The overnight solutions HET for the Tecumseh is $158. Your thoughts? If the K301 won't work, is the K241 a direct drop in replacement? I just hate Tecumseh engines.


#2 chieffan ONLINE  

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Posted August 14, 2016 - 12:54 PM

If you have a dislike for the Tec engine you will never be happy with one so why spend any money on it?  I would go for the Kohler and see how the replacement would work out.  Can always fab up something that will work.

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#3 EricFromPa OFFLINE  



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Posted August 14, 2016 - 01:54 PM

If you get the 212 and it needs the engine rebuilt you will have way more than $158 rebuilding it.I suggest you pull the head off of the K301 in the 212 and make sure the cylinder bore is good and straight.If you put the piston down in the bore the whole way and see an abnormally large gap between the piston and cylinder it's gona need bored out and oversized piston and rings installed.Max out of round on a kohler is .003 Fresh bore is 3.3755/3.3745 with a max wear limit of 3.3780.


But if it runs and your happy with the way it runs,no smoke or knocks then just swap her over.


Wiring should be the same.2 wires from the stator to the regulator and 1 wire from the regulator to the key switch.Use the regulator off of the 212 and hook it to the 112s wiring.

#4 lyall OFFLINE  



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Posted August 14, 2016 - 09:23 PM



our frame should look like this.  the motor should have a flat bottom.




this is what the 212 frame looks like.  note the motor supports.

the pan on the 212 is not flat, it is deeper.  there are two different motor pans for the 212.

a steel pan and a aluminum,  the steel pan uses the two piece support,  the aluminum pan uses the single support.