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Re: [T3] ethanol, more power


On 23 Apr 2002, at 9:41, Jim Adney wrote:

> I guess I really don't know how the power of an engine will be affected by
> gasohol since a change in viscosity will also change the amount of fluid that is
> delivered, but alcohol and gasoline seem to me to have pretty similar
> viscosities and so a 10% addition of alcohol should not make much difference in
> the overall viscosity.

I had dinner tonight with my ME engine professor friend and asked him about 
the gasohol question. He agreed that the energy in alcohol was lower than in 
alcohol, but he wasn't sure of the amount either. We agreed that it was not a 
big difference, but it was significant. He also pointed out that the stociometry 
(sp?) for alcohol would be different (different ideal fuel/air ratio) so this would 
be the thing that changes whether you need to run richer or leaner. If some of 
you have really poorly jetted carbs then changing to gasohol would help, 
possibly a lot, but only if the gasohol took you in the right direction.

Sorry, but right now I don't know which direction that would be. I'll ask 
someone else who would know tomorrow.

-
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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