<VV> steamer

[djtcz at comcast.net]

snipped and bottom posted 
______________________________________________________ 
Date: Sun, 21 Jun 2009 08:51:15 -0400 
From: Tony Underwood <tony.underwood at cox.net> 
Subject: Re: <VV> Cooling Boosted Corvairs Re: You know your Turbo is 
working when... 

...................Street running is never going to involve full throttle max output for 
more than ten seconds at a time unless you're a sadist. .................. 

( WW II ref ) 
................................... not only did the water prevent 
detonation, it also actually helped provide a little extra "push" on 
the piston when the engines were working really hard and combustion 
temps were high enough to instantly boil that extra water into 
steam... ....................... 

tony.. 

------------------------------ 
I think Chrysler limited high boost to something like 10 seconds on my buddy's 4 cyl Turbo Lebaron of the 80s. Made for a useful and impressive driving experience. 

re: steam - I think the conversion to steam is a losing situation, energy and pressure wise, which is exactly why it is so effective as an anti-detonant. It takes a batch of BTUs to convert water to steam. Applying the same BTUs to the combustion gases without water present would result in higher temp and pressure. The pressure would be good for torque an thus HP, but the high temp is what gets us into the detonation ( and Nitrous oxide pollution) in the first place. 

Dan T