I am trying to debate the merits between several different engine conversions (although i don't really know why... my 1.9 is running like a champ). My main criteria is not a moderate HP increase (although an extra 15 or so would be great), but rather the reduction of pollution to the world. So this question transcends (a bit) frank's lengthy analysis, although inspired by it. What combinations of fuel and engine produce the least amount of pollutants? In this question, i am including the impacts of actually producing/transporting/etc. the fuel, as well. (i remember someone mentioning this a while back, but can't find it in the archives). How does natural gas, or possibly even fuel cells weigh in to the global-efficiency calc compared to your standard gas and diesel? It sounds like a simple TDi is a viable option for these criteria, but i want to see even *more* numbers! :-) Thanks, -Damon Frank Grunthaner <FrankGRUN@AOL.COM> wrote: And frankly, the highly efficient TDi is probably the most effective engine for the Vanagon. Turbo diesels are impressive, and the TDi technology even more so. Sorry for the soapbox, Frank Grunthaner '84 Westy
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