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#1
02-08-2014, 06:18 PM
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K241 rebuild help needed
Hello all. I was given a 100 from a co-worker who had no idea the history of the tractor other than it threw a rod while trying to pull a trailer out of the mud. I have the machine apart replacing almost everything because it was left in the weeds for a couple of years and most things are rusted together. At any rate, one of my true loves is to rebuild engines so I was excited to get into the k241. This is my first cub cadet but figured the internals of the engine would be familiar. It was except for the method of removing the cam, haven't seen one that rides on a shaft like this. The block skirt isn't broken and the cam itself looks good, the piston is marked STD. I like to measure everything before going to the machine shop so measured the piston bore and crank journal in 6 places, 90 degrees from each other in triplicate. To cut to the chase, the largest bore is 3.2785, limit for std is 3.254. This appears to be 0.026 inch over std, is this possible for a std bore piston? At least one that "ran fine" until the rod broke? Also, the crank rod journal was found to be 1.4800 at the smallest. Std is 1.5000. This looks to be 0.020 inch under. Smallest rods 0.020 inch under? How did this not have a huge rod knock. Maybe it did and he didn't notice. Seems odd. Is the crank wasted? Anyone with some insight? Long winded but appreciate any input. Thank you.
Pete 
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