Hi Joe -

More than your buddy may wish to know...

http://www.amazon.com/Internal-Combustion-Engine-Theory-Practice/dp/0262700=
263/ref=3Dsr_1_1?ie=3DUTF8&s=3Dbooks&qid=3D1297565774&sr=3D1-1-spell

http://www.amazon.com/Internal-Combustion-Engine-Theory-Practice/dp/0262700=
271/ref=3Dsr_1_2?ie=3DUTF8&s=3Dbooks&qid=3D1297565774&sr=3D1-2-spell

SIr Harry Ricardo's works are seminal; Prof. Taylor's works are more recent=
..

Water injection is usually employed to reduce octane
sensitivity/charge-air mixture
temperature - Pretty much interchangeable in IC engines...

If your buddy's app is supercharge/NO2 injection he needs to do the math.
Or have very deep pockets. Or pay someone who has done the math (slightly
less expensive, occasionally).

HP Books published a number of related "cookbook" pubs once upon a time -
Worth reading if you can find them.

A sometimes insufficiently appreciated gotcha is that if your WI system can
pump/syphon water into your cylinders while the engine is shut down, the re=
-
sultant "hydraulic lock" will likely destroy the engine, next time it's sta=
rted.

 Jack
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