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Re: Uh, yes! (more) (archive)

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Posted by Brad Franklin on October 06, 1999 at 13:26:39:

In Reply to: Uh, yes! (more) posted by Manoj on October 05, 1999 at 16:53:22:

Textbook response yes, and you are right on many things, but you forget about things like new engine tolerances (i.e. why they require a little break-in), oil contamination, oil breakdown from heat, etc.

Another good example, look at aircraft engines, like the flat four in a cessna 172. These engines run pretty much wide open for extended periods of time....that's why you don't see any aircraft engines that have 7000-8000 rpm redlines...you're talking more like 3000-4000 rpm max operating speed. Why? Reliability. Even then, the FAA requires a complete rebuild evert 1200 operating hours, equivelant to running the engine wide open for 1 1/2 months...at only 3000-4000 rpm. You're saying rev it at 8000 rpm, for roughlt 750 hours, and hey...it's fine , we can rev it like that for several months if we want! Maybe Honda should make airplane engines? :)

Brad


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