Just the opposite - it cools the combustion chamber. With a "perfect" water
injection setup, you could theoretically run a 17:1 compression ratio engine
on 75-octane gas. In the real world, you can typically run 10-12:1
compression ratios on pump gas with water injection. However, you will lose
about 5% power compared to running the same compression with high-octane
gas. Some of that can be re-gained by mixing alcohol with the water at a
1:1 ratio.
The water injection is efficient because it isn't needed under part-throttle
conditions, but is used under full-throttle or when the engine is under
heavy load (such as towing or crossing a mountain pass) to prevent pinging.
'92 Dak CC 2wd 318 3.55
'84 GoldWing Interstate
-----Original Message-----
From: A5LTRETR@aol.com <A5LTRETR@aol.com>
To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
Date: Thursday, March 25, 1999 9:20 PM
Subject: Re: DML: Making power
>I am not positive but I believe what the water injection does is raise the
>temp in the combustion chamber to rid of the detonation. Somebody prove me
>wrong.
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