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I used to do that. I used a regular spray bottle with a trigger like you find around your laundry. You had to get the engine up to over 2000 rpm or it would quit. The object was to blow all the carbon and scale out of the chamber and clean it up. The hope (key word here) was that when all that scale broke off, it went out the exhaust rather than lodging between the piston and cylinder wall (where it would do a number on the block in very short order. After a while I quit doing it because I had no credible evidence it was doing any good, and was afraid of what I felt to be serious chance of serious engine damage. Water injection is not for the faint hearted. The B29s in the Pacific used it to get off puny airfields like Iwo Jima. It worked, but only because they were in a position to change engines every 50 hrs or so.
Even emulsified (which we can't reliably do) water is a bad thing ... Jim S.
WRJJRS@aol.com wrote:
Dave,
In the old days, I'm led to believe they actually added water to the carby
to clean the carbon deposits - that's water in addition to normal fuel.
I have never done this but when you think about it, it does sound logical,
probably get some additional compression as well as the water droplets flash
to steam.
Probably a little 2 stroke oil in there as well wouldn't hurt !
George (down under)
George, I have seen people use a light spray from a garder hose(pipe) to "de-gunk" their piston engines. A balance between clean and hyd-lock is important! Never put in more than the engine can vaporize. (but it can be hard to be sure how much that is.)
Bill Jepson
Homepage: http://www.flyrotary.com/
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