Not sure if the top oilers used a Ventury to meter the mist. My Waterinjection is much more sophisticated than I thought. It´s more like a little carb with a float, emulsifying tube, metering screws different jets and all.
I got it installed now and was able to advance the spark a bit more than usual on pump gas.
You can feel it when it comes in above 2000 rpm. The sound of the engine changes slightly and it runs smoother with more response.
I don´t have any mileage figures yet, but I keep you guy informed.
Frank
P.S. here is a Airforce research paper of WWII when they tested water injection for those bombers.
http://www.turbotuning.net/Artikel/naca-wr-e-264.pdf
