Re: [Amc-list] Re; Interesting Water Injection for DIY (Carbureted)

[Wrambler242@xxxxxxxxxxx]

I've thought about it several times, even back in the 70's when you could buy them the kits were crap.
My wifes diabetic, I wonder what size needle she's using? Probably too small.
   I like the idea, the thing is I'm little too picky for the stick a needle in a vacuum hose thing. 
My buddy bought a kit for his detonation prone 351M [what a screwed up engine]. He fought with it and it never worked at all. He dropped the nut that held the injector in the aircleaner lid into the carb and then forgot he did it! He ended up rebuilding the piece of crap 351M. If the kit would have worked right he wouldn't have been messing with it, oopsie.
  His kit used a switch that sensed vacuum IIRC and a washer pump to squirt in water or washer fluid in winter. Like I said, it was piece of crap.
   Now, I think they could build much better, but no one I know of has addressed the issue. electronic controls and an alcohol mix, well you could really fine tune it....
   I wonder if it would cure that irratating rattle the 4.0Ls I've had all seem to have that doesn't seem to respond to mid grade or high test? Nah, that's probably piston rattle ! :]


--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
" I was different before people dared to be different" 

 -------------- Original message ----------------------
From: Tom Jennings <tomj@xxxxxxx>
> Water injection increases thermal efficiency; the heat that would go out the 
> tailpipe is used to heat the water to steam which increases cylinder pressure 
> etc. It has nice anti-detonation features too. 
> 
> If I recall correctly it was big in WWII aircraft, but combustion science and 
> turbocharging mainly did it in; turbochargers turn "waste" exhaust heat 
> energy into intake air which is a huge help at high altitudes obviously.
> 
> ALso water injection was big back in the days when ignition timing was not 
> very well controlled, usually retarded, and compressions were really low. I 
> would suspect that today, short of well-timed direct cylinder water 
> injection, that a lot of ignition timing work would do better than the 
> water -- on a modern (1960's+) motor.
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