> Having (say) a V8 running on 4 cylinders doesn't make economical sense, 
> because you'll need the same energy from the 4 cylinders to achive the 
> performance your
> right foot is demanding, and the 4 non-running cylinders will be wasting 
> energy as air pumps - all the suck-squeeze-nobang-blow energy would be 
> wasted.

AFAIR the folks who do this turn off the "cams" on the dead cyliners so that 
they act as air springs.


   Russell

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