Quote:
Originally Posted by aerohead
*I went all the way through my textbook for internal combustion engines.
*Back pressure was so monumentally important that it wasn't even listed in the book's index.
*The term 'back pressure' did occur,one time,on page 493,on an engine performance table from I.N.Bishop of Ford Motor Co.,published in 1965"
, etc.
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Again, the world has changed since 1985, or 1965, or 1945. Engine Management Systems, direct fuel injection, variable valve timing, and so on have 300 ci engines going from 100 hp to 350 hp with a doubling of mpg's and a reduction of controlled emissions by 99%. High backpressure at low rpm was a kludge then (
) and has no benefits now.