Quote:
by ajs96
was absolutely not surprised how the engine pulled away from the frame when i saw that these motors are mounted directly to the frame into a cast aluminum oil pan??? That just seems crazy to me and i think i am going to have to fabricate something a little more reasonable when i put the motor back in. These type of failures have to be common on these, right?
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IH Cub Cadets used the same motor mount system from 1963 when they built the 70 and 100 thru the fall of 1974. Garden tractor pulling bunch still use the same system. My 149 is one later ones produce. It came with a cast iron oil pan. Yours should have a cast iron pan too. There is no need to fabricate the motor mounts. I hammer my 149 when I pull a moldboard plow. The bolts may work loose or streach some if you use cheap bolts. I would not use 1/2 inch bolts in the oil pan. Odds are you will need to make the holes larger in the frame. Thats a no-no in my book. You could mess up the motor-driveshaft-rear end alinement when you go back to the right oil pan and bolts.
The best thing to do is to buy a good used cast iron oil pan and at least use grade 5 bolts. One of the sponsors at the top of the page can help you out with a good oil pan.
I wouldn't throw anything into the motor until you have it running. Your wasting your money by just replacing the rings. I would invest some money in a Kohler Service Manual if you don't have one. They show how to check items like the the bore, crank journal and connecting rod journal. The manual has the specs for what is allowed before the motor needs bored and undersize the crank journal.
All my motors go to a local automotive machine shop to have necessary machine work done.