Re: compression and octaine
Not the whole mixture, lots of the additives. There are different things you can add to gasoline to raise its octane, some of them are more EPA approved than others. The ones in race gas, from all I've heard and talked to, aren't as persistant. Part of the reason race gas has such a persistant smell to it. I'm not talking its explosiveness, I'm talking its tendancy to evaporate off pieces of its self. Heavier hydrocarbons and more stable ones are slower burning, benzene is very commonly used in street gasoline and it does burn slower, tetra-ethyl lead on the otherhand does the same thign but does inhibit the burn rate as much.
Not the whole mixture, lots of the additives. There are different things you can add to gasoline to raise its octane, some of them are more EPA approved than others. The ones in race gas, from all I've heard and talked to, aren't as persistant. Part of the reason race gas has such a persistant smell to it. I'm not talking its explosiveness, I'm talking its tendancy to evaporate off pieces of its self. Heavier hydrocarbons and more stable ones are slower burning, benzene is very commonly used in street gasoline and it does burn slower, tetra-ethyl lead on the otherhand does the same thign but does inhibit the burn rate as much.
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