On Nov 21, 7:00*pm, Wayne.B wrote:
On Mon, 21 Nov 2011 19:10:55 -0500, John H
wrote:

It is a wonder how a 6.6 liter diesel can get better mileage than a 5.6 liter gasser, but they do.

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There's no magic to it, just the laws of physics. * Diesel fuel has
more BTUs per gallon and diesel engines operate at a much higher
compression ratio. * In addition a diesel engine does not operate
against the constriction of a throttle plate. * The rule of thumb is
that a diesel engine will burn about 1 gallon per hour for every 17 or
18 horsepower. * A gas engine burns 1 gallon per hour for every 10 hp.

Then when you start turbo-ing the engine, the power flies. As long as
you can keep the engine cool, the power is phenomenal.

Take the lowly detroit '4-53' a 212 cubic engine, but with porting,
turbo's and inner/after cooling, that little engine is capable of well
over 450 reliable hp.