The most efficient ICE to date at about .33 BSFC.
This is from a little book called "Napier Powered"
by Allan Vessey 1997 I found in a UK aviation museum.
I forgot which one.
A turbo compound Mazda rotary could equal
or best this engine IMHO.
Paul Lamar
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ACRE NL web site.
http://www.rotaryeng.net
Youtube key word UTUBPLEASE
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