Posted by jdemaris on March 16, 2014 at 15:45:50 from (70.194.6.88):
In Reply to: Horsepower again posted by gtractorfan on March 16, 2014 at 12:12:08:
Just as Dean stated - few cars or trucks have engines rated for steady use. The only ones I can think of are a few heavy 3/4 ton trucks. Engines for heavy use (on the road) get "B" ratings. These ratings predict how many miles they last, on average, when used hard most of the time. Chevy Duramax has a B10 rating of 220,000 miles. That means that when used hard - 10% by 220K miles and 90% make it. You won't find any such rating for a car engine that is not made to endure steady hard work. Tractor engines got weeded out by the Nebraska Test Institute. Some HD engines came with two ratings: One for max power and one for continuous max power. One example is a four cylinder VP4 Wisconsin engine. It is rated for only 24.2 horsepower continuous, and 31 horsepower max momentary.
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