Archives: air/fuel ratio

Uniform Standard of Units

Throughout our publications, air intake and fuel delivery values are converted to a ‘uniform standard of units’. That is “pounds per revolution”. The tuning demands for weight of air and weight of fuel become easy to understand, record, and analyze with that numerical value. And easy to change in fine tuning increments with this simple […]

E85 as a Racing Fuel

E85 is examined as a racing fuel.  E85 is a combination of ethanol and low octane gasoline.  Some racers report more power from E85 than from methanol.  On the other hand, when the Indy Car League converted from methanol to straight ethanol, dynamometer tests revealed a reduction in power after the conversion.