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On 15 Mar 2001, at 21:22, Russ Wolfe wrote: > The ones my brother uses, uses dry ice. The idea is to get the fuel as > cold as possible. (more molecules per cc of fuel). They do play with > the jets in the carbs, but when you are talking about a couple > hundredths of a second costing you the race, any little help you can > get counts. Considering what the expansion rate is, plus the fact that the gas is bound to get slightly more viscous as it gets cold, I really don't think this can help at all. Even if the viscosity doesn't change at all, the change in fuel density can't be as much as 1%. You can do MUCH more than this with jetting. The only way this might be necessary would be if you were already using the largest jets you could find and you were still lean. Does this ever happen? (Seriously!?) BTW, Acetone at the temp of dry ice is almost as thick as honey. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org