Originally Posted by 32vld
If you are going to put the same amount of fuel is one thing.
The advantage of why you can use alcohol to get more power is because you can put more fuel in a cylinder and it will completely burn. Where extra gasoline won't get burnt and will go out the tail pipe.
Why do alcohol dragsters go faster?
Is it because alcohol weighs less then gas so the weight reduction makes them faster?
Or is it they can get more power out of alcohol?
Yes different fuels have different btu producing ability. That fact alone is misleading because ignores what can be done in the real world.
Alcohol dragsters go faster because the engines are built for alcohol, but once again...we are talking mower and trimmer engines, not supercharged high compression engines DESIGNED to run on ALL alcohol.
Btus are still btus...in order to make more power out of less btus something has to change internally inside an engine...so they increase the compression ration and install superchargers that can utilize the higher octane ethanol, though lower btu and in turn they overcome the lower btu output of the fuel.
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