[Fwd: [M] [M} IC Thermodynamics]- Part 3

[ECMnut at aol.com]

In a message dated 11/3/98 9:37:53 PM Eastern Standard Time, twsharpe at mtco.com
writes:

> A more cost efficient use (cheap) is to cool the turbo with water/alcohol
>  injection into the turbo inlet. The turbo really atomizes the liquid,
>  causing it to evaporate rapidly, absorbing a lot of heat and volume, thus
>  reducing boost, which the turbo promptly replaces. This is very efficient
>  for street thrillers that don't need more than 10 seconds worth of WOT.
>  
I went this route several year ago, and had problems with the alchohol/water
mix having an "abrasive" effect on the compressor wheel.  I would not do it 
again.  BUT I have never seen pistons so sparking clean at teardown time,
as with water injection.
HTH
Mike V.