Re: Hours verses milage

Posted by Jonboy on December 23, 2004 at 20:01:18 from (165.121.145.17):

In Reply to: Hours verses milage posted by RW on December 23, 2004 at 16:46:56:

I would multiplied each hour by 25. I figure an excellent life span of a car to be 250,000 miles, and I think an excellent life span of a tractor engine to be 10,000hrs, so therefore a tractor that has 10,000hrs has 250,000 miles. I wouldn't try to go by that too much as most engines don't reach 10,000hrs before they need a rebuild and there are many reasons why, it could be poor design, some engines tried to make too much power for their size like the 7080 (180hp)Allis engine was known to have a much shorter life span of like 4,000hrs before heat related problems caused premature failures (more fuel = more heat), but the same engine was used in different models such as the 7060 (160hp) and 7040 (140hp) with reduced power levels and was much longer lived, in fact, I work for a guy who has a 7040 with over 8,000hrs on it, and it still runs like a brand new one. One quality about tractors is that they are capable of being rebuilt again and again. Maintenence and many factors decide upon how long an engine will last and trying to compair hours to miles really doesn't work too well.
hope this helps

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