During WW II  the Navy F4U Corsair and the Navy Hellcat had  radial
engines that used a water injection system that  enabled those engines
to achieve "Military Power" from the engines or in other words - achieve
substantial power above the engines design capability for sustained
maximum power. This water injection system enabled many a pilot to save
his butt in a dogfight with Japanese pilots.

Does anyone on The List have any knowledge about this, and whether there
has ever been any effort to try and use the principle to extract more
power for an automotive engine or increase mileage per gallon?

John Rodgers
88 GL Driver
Pomgranite