water injection home made

[Dave Balfour]

I made my own for my carburated Renault in the 70s.
I used a small electric water pump from a winshield washer a jet from
a motorcycle and control unit from a vacuum diaphram, a micro switch
to bear against the diaphram and a relay that would latch on. I
tapped into the windshield solution and got a bit of alcholol along
with the water.

The jet i placed in the air filter and had it blowing spray into the
top of the carburator. I would start the system after car was running
It would be activated when the engine vacuum was almost zero. It
stopped the pinging at high loads. Too much water reduced
performance.
dave balfour
-----Original Message-----
From: Bernie Jacobsen <bcjac at ix.netcom.com>
To: diy_efi at efi332.eng.ohio-state.edu
<diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, March 22, 1998 10:48 AM
Subject: Re: Wide Ratio O2


>Does anyone know if water injection systems are still available (I
remember
>them from the 70's and early 80's, but haven't seen them since)?
>
>Can you still buy systems? parts? Or is 'home brew' the only option.
>
>I'm interested in it for a '85 Motorhome with a 454.  I would like
to
>advance the timing for better fuel mileage.
>
>^Bernie
>
>
>
>-----Original Message-----
>From: Raymond C Drouillard <cosmic.ray at juno.com>
>To: diy_efi at efi332.eng.ohio-state.edu
<diy_efi at efi332.eng.ohio-state.edu>
>Date: Sunday, March 22, 1998 2:23 AM
>Subject: Re: Wide Ratio O2
>
>
>>On Sat, 21 Mar 1998 17:05:19 -0500 "Bruce Plecan"
<nacelp at bright.net>
>>writes:
>>>Does water injection effect ionization as far as the O2 sensor is
>>concerned?.
>>
>>I never tested it, but water injection should have no effect on the
O2
>>sensor. The water is vaporized and is indistinguishable from the
water
>>that is created by the combustion of the hydrogen in the fuel.  THe
>>H2O/CO2 ration will increase slightly.  Going with a smaller
hydrocarbon
>>molicule (lighter fuel) will have the same effect.
>>
>>>  Would this work on a diesel engine?.  Or would the soot kill
it?.
>>>What about water injection on a turbo diesel?.
>>
>>Water injection is used to prevent detonation.  Diesels run on
>>detonation, so water injecting a diesel might cause it to quit
running.
>>I can't see any point in water injecting a diesel, anyhow.
>>
>>>
>>>  Does everyone realize how dumb a ecm using this could be.
>>>Just a "Base Pulse Width", TPS enrichments, and a "scale" for
AFR's.
>>>  Ya almost could use like a MSD Timing computer, a divide by
>>>signal processor,  and the above, and instant ECM.
>>>  Oh ya something for engine temp correction, for enrichment,
>>>and IAC for cold run.
>>>   But it sure make things look alot easier all of a sudden.
>>>Bruce
>>
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>