water injection, anyone?

does anyone use water injection,
i just stumbled across this site explaining the works of the simplest injection i've ever seen http://website.lineone.net/~da.cushman/misc/mannject.html
Anyone up for an experiment?

 

It was used on a number of aircraft engines in WWII.

 

I don't know about the power and economy but it is a good way to clean out combustion chambers.

 

I did not take the time to read the referenced site but I have used water injection on at least two different vehicles over the years.In my experience it is not in itself a power enhancer but can be a good crutch where you are stuck with a motor with too much effective compression for use with easily available fuel.I did use it on my small block Corvair which had about 10.5 comp. and also in my 462 GS when it had iron heads and about 10.3 comp.I used a Spearco setup in the Corvair and an Edelbrock Varajection in the Buick.Both systems worked but you had to carefully set the water and alcohol onset(based on vacuum and rpm in the usual fairly sophisticated setup) and you had to experiment with volume of fluid being injected(using various jet sizing).I sold my setup for the Buick when I went to Stage 2 heads.There is also some power loss on carbureted setups because of the intrusion of the water jet,hose,etc. over the carb primaries if you inject this way-about 10 horse on the dyno.I found it all to be a bit of a pain.Better to build your motor the right way to begin with in my experience.The whole concept of injection may be quite different using a turbo setup however.I do feel that with the usual carbureted engine it is only a method to try to keep as much power as you might reasonably expect had you not been experiencing detonation.True it keeps the combustion chambers nice and clean but in the end as one experienced engine builder has put it "it's hard to build a hotter fire by pouring water on it".How true! Rod

 

http://www.aquamist.co.uk/

I have no experience with this company. Just listed it as a reference.

I played around with home-made water injection back in the '80's. I never got it to work very well.

 

water/alcohol injection is well known in the turbo crowd for it lessens detonation and cools the intake charge. At work we use water to rinse 2,5-25000 horsepower turbochargers wich is poured in under full engine load.
What I fell for in this article is how simple the equipment is they are using





this stuff can be made up and tested in an afternoon for about 2-3 bucks