I have run straight alcohol engines at 13:1, but we were looking for power, not fuel economy. A foot of blue-white flame out of the exhaust stacks generally means not all the fuel is getting burned in the cylinders, but they sure sound, and smell good with that much alky going through the engine! A flathead Ford V-8 in a 34 3-window coupe Dad ran on the 1/4 mile dirt tracks around Middle Tennessee got 8 laps per gallon! It ran Methanol with a healthy dose of Hydrogen Peroxide mixed in!
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!