Originally Posted by Driller
I vaguely remember something like this back in the early 70's with a water type injection into the air intake on larger cubic inch displacement vehicles, of the buick variety if I remember correctly. can't say that I remember them making that much of an improvement in gas mileage but this WAS in the days of the carb. so, it will warrant some investigation. sure hope there is something to this.......Driller
Water injection is very real and was used in WWI and WWII era piston engine aircraft as well in some turbine applications. For piston powered craft it gave significant power gains and used less fuel in high altitude flight where air density is low... Not something your average Jeep can do. Unless of course you add a cool flame paint job, thats good for atleast 20,000 feet or so.
It also helped with engine knock in times of higher power demands at lower altitude in effect making more power by altering the octane rating. It also lowers both intake and exhaust temps. Lots of merrit in aircraft applications.
I also have heard of this being used back in the 70's on a Buick from an instructor I had at Spartan College of Aeronautics years ago. He knew his stuff, but getting the same effect at ground level seems a bit far fetched to me. They say it is as easy as setting up a watered venturi and leaning the carb a bit.