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Smokey Yunick dipped a whole car body in acid to thin the metal and lightweight it [undetectable at tech inspection].
In this case he though if a warm air intake is good a hot air intake would be better. It took a turbocharger to force the air thoough the triple-stage heaters, but the claim was the fuel wouldn't precipitate so no detonation.
Quote:
This little motor really is a GM V-6 engine block cut down to a V-2 cylinder. It’s turbocharged and feeds hot air and vaporized fuel to its cylinders. One of the most unique aspects of this design, as well as having GM engineers talking to themselves, is that this hot vapor system operates so there’s no detonation.
The first thing that strikes you about this engine is its size. “Seventy-eight cubic inches and 170 pounds”, says Smokey. Another surprising thing: There’s no cooling fan. In fact, there are only two quarts of water in the entire system, including the tiny radiator.
Smokey calls it his “Phase I adiabatic engine”. Adiabatic is an engineering term that refers to any process in which there’s no gain nor loss of heat.
A completely adiabatic engine isn’t possible, but the closer you get, the higher the engine’s efficiency and the better the fuel mileage. In other words, the less heat energy generated by the burning fuel that you throw away through the exhaust and cooling systems (much like the vehicles we all drive today), the more energy there’s available to move the car.
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In 1983 we didn't have Internet. Heck, we didn't have overlapping windows on the desktop.