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Re: Re: Re: Displacement/engine speed/HP
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Posted by F14 on August 30, 2000 at 13:17:38 from (216.252.28.172):
In Reply to: Re: Re: Displacement/engine speed/HP posted by Explain the last paragraph on August 30, 2000 at 12:38:36:
Makes sense to me. Say your car is rated at 180 HP. This would likely be at somewhere in the neighborhood of 4500-5000 RPM with today's V-6's. How often and how long would you be at that RPM/HP? Maybe for passing, and the odd stoplight-to-stoplight Gran Prix. The rest the time, you're cruising in overdrive, at 1500-2000 RPM, using only a fraction of the rated horsepower of the engine. A tractor, OTOH, is much more likely to spend hours with the throttle set at PTO-rated RPM, cranking out near-maximum horsepower, while plowing/disking or whatever. Therefore, the engine must be mechanically much more rugged.
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