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Quote:

Originally Posted by opelgt73 (Post 101749)

I've heard this bandied about before, Is this really a practical idea? Has anyone actually build something like this? I haven't run any numbers but I find it hard to believe that the output would be worth the extra weight and complexity. Or if it is even a thermodynamically possible process.

BMW has (I can‘t remember which) either a concept car or a model exclusive to Europe that uses a high and low temp steam system to help turn the crank shaft. I read about it in Popular Science a year or so ago.

I'd love to rebuild an old XFI engine and do alot of custom work to it. Aluminum everything, dyno-tuning, the works...

Then convert it to turbo-diesel. If a VW TDI can get 50-60mpg, imagine a XFI TDI?