Quote Originally Posted by glennsexton View Post
The accepted ratio that I am familiar with for normally aspirated engines is: 1-horsepower for 1-hour requires approximately .5 (1/2) pound of gasoline i.e., a single-cylinder engine producing 1-horsepower for 1-hour uses approximately .5 pound.
Glenn,

Why would the amount of fuel required to make one horsepower for one hour vary for naturally aspirated and forced induction engines?