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PjlOval, What do you mean by highjacked? in the beggining we talked about being no advantages to using E85 unless you build a high compression engine for it or it is turbocharged. From my experience 35% richening is too much even for pure alcoohol, so with e85 it is way too rich. THere is also the corrosion issue (it is bad). How much does a gallon of E85 cost? Here a gallon of gasoline is US$4,18 and a gallon of alcoohol is US$2,09. It is not that more compression wouldn't hurt, it is needed. Timming is only advanced if you do not have the compression....a correct alcohol engine requires different timming from a gas engine, not simply more...the curve is different.
Differences sum up as: corrosion on all parts in contact with fuel...tank, pump, lines, and specially the carbs. Different jets, e-tubes, float needles. Different timing. Higher compression ratio. Some manufactures change cam profile (because the car behaves differently and they want to fix that - I'm ot suggesting you have to swap cams, I'm illustrating how different it is). Smaller venturis. No polishing of manifolds and heads or rather a different finish then the one you are used to. cold start system required depending on weather....
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June 22nd 2006, 11:14
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