I have not torn the old engine down to see exactly what happened, but it was apparent that something went through the no. 1 cylinder. The end of the injector was banged up and I could see the crown of the piston was beat up through the injector hole. The push rod was off the exhaust valve on that cylinder, so I am guessing that it dropped that valve. The engine had 4300 hr. on it when failure occurred, had been running good up till that point, though did seem a bit down on power this year. I would also have liked to install a Cummins or some other more common engine, but did not feel that I had the time in the middle of harvest, though from the looks of the weather I maybe would have. Thanks for the reply, Rich