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Old 01-25-2012, 11:47 AM   #93 (permalink)
drmiller100
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Join Date: Dec 2011
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Hey Ken,
I'm trying to wrap my head around some things as you know. So we all "know" a smaller engine is more efficient then a big engine, right?

But, if take a 500cc engine, in theory we could find an RPM and run it at WOT to get our 22 horsepower.

In theory, we could take a 1500cc engine, and run it at 1/3 the RPM, at WOT, and get our 22 horsepower. So, given this example, out 1500 cc engine would be as efficient as the 500cc engine, right????

of course the bigger engine would be a lot heavier, as would the rest of the drive train.

The CX/VX honda engines were designed for this I believe - 2 valve per cylinder, teeny intake and exhaust, and higher compression.

Hey. Another question. Back to the monster diesels sort of. If I have a 1500cc engine at low rpm, will I lose less power to the cylinder walls? Or does the extra time because of the low rpm cancel that out?

maybe I'm over analyzing this - just looking for opportunities.
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