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Re: John Deere 140 repower
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Posted by Steve Crum on April 15, 2007 at 08:50:58 from (4.156.231.45):
In Reply to: Re: John Deere 140 repower posted by Rob Hartman on April 15, 2007 at 08:03:33:
I posted about this on the Johnny popper board and it was explained to me that the larger K series Kohlers such as my K321 had a nasty habit of having the block distort. This happens with age and hard use. Apparently the distortion happens in the area were the cylinder becomes part of the crankcase and this throws the cylinder out of exact 90 degree alignment with the crankshaft. This effect in turn causes the rod to thrust hard on one side of the crank journal. Subsequent side stress and heat cause the rod to seize on the journal. This last time the engine had less than 3 hours running on it with a new piston and rod. The first overhaul was due to the engine smoking. it got a new rod then, and the second time a new rod and crank polish. The 3rd time a new piston and rod. F-I-T explained all this and it makes sense. The v-6 doesn't make a lot of sense, but I'm still thinking about it.
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