If I had said "spectacular" I would understand your beef.

Here are the respective weights of a few engines for comparison.

Engine HP Weight(lbs) Comments
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Continental A-65 65 173
Limbach L 1800 66 154
Limbach L 1700 66 161
Rotax 618 74 136 Includes 20 lbs radiator, etc.
Great Plains VW 2180CC 75 165
Franklin 225 75 230
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"doable". It wouldn't be efficient. But it would fly. If one fiddled
with the wastegate or injection computer they could probably get more
power. The guys with the powerstrokes are doing some crazy things these
days and some of that tech would probably carry over to the TDI.

What do you fly by the way Jim?

Can i get an "s" ?

-Matt