Bored surfing yields weird advice...comments?

[Alex Kowalski (audial@aol.com) (Kathy Peters) <kpeters@wppost.depaul.edu>]

Well, I was absently surfing today and came across a site called 
www.overboost.com.  It's a webzine published by/for the import (mostly
Japanese) turbo/performance crowd.  One of the pieces of advice they
had posted under "No Buck Performance" was a way to clean the intake
tract/engine by:

1) Getting a bucket of water or ATF
2) Remove a vacuum line from the motor while keeping it from stalling
3) With a finger over the line to "regulate" the flow, submerge the end
    of the line in the bucket.
4) Rev the motor and let the engine suck the water / ATF into the 
    intake to clean out the carbon deposits.
5) Don't let in too much water or you'll destroy the engine
6) Replace the plugs because you've fouled them if you used ATF.

They also put in italics: "Consult with a mechanic before trying this..."

Now, I have heard through the grapevine that water injection can help
keep combustion chambers clean and that sounds plausible.  But I've
never heard anyone advise someone to deliberately introduce water/ATF
into the engine using a bucket, through a vacuum line, with the engine
running in order to clean the intake and combustion chambers.  I can
imagine that this method might dislodge some of the gunk from the intake
manifold/combusion chambers that would wind up right on the
turbocharger.  Also, a fine mist is one thing but adding significant amounts
of water = steam = pressure = blown head gasket?

Does anyone have any comments on this before I get my garden hose?
;-)  Seriously is there a kernel of good advice here? In one of the archives
there was a discussion of adding 1 quart of ATF to fresh oil and letting
the engine run for awhile to de-crud it internally, then draining and
replacing with fresh oil and filter.  That sounded reasonable.  But ATF into
the intake?

Best Wishes,

Alex
'86 5KCSTQ