Quote:
Originally Posted by sperry
An engine block is exposed to more water just due to normal humidity that it is when you add water injection to the mix. I'm pretty sure it would be fine. Hell, cast-iron steam trains didn't rust out in 20 minutes. A modern engine designed for the water cycle would be no different than a current motor that has to deal w/ condensation and the like already. In fact, I'll bet a water-stroke motor would run cleaner due to the constant steam cleaning it gets.
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Given that roughly half of the the combustion byproduct is water, I'm sure it'll be fine.
Edit: way late.