Once upon a time, cars used simple mechanical devices
to meter and mix fuel with air.
I have several, taken off old cars.
Is there some reason that a carburetor can't
meter water/alky. I realize that you would need to
monkey with the floats and jets, perhaps using one barrel.
I further realize that there will be one psi pressure drop
across the water 'injector', but if you got boost, who cares.
This would seem to be a simple way to have porportional
water injection. Think of it as, push the little button on
your shifter, and you're driving in fog.

 

a windshield washer pump and a garden sprayer nossle would work better.

 

That would not be proportional.

 

with one of several popular homebuilt circuits it could be.

 

i heard of this my dad often talked about it in his gto but he said it rusted some stuff out. but if you guys could give more details that would be cool and a diagram
jon
ps i think it would be cool to do in the elco

 

MrDude, do you have any internet links, handy?

 

If you've ever seen what happens to a carb when you get water in/on it, and what a hassle it is to clean up the corrosion afterwards you'd realize how bad an idea this is...

 

Perhaps a carb intended for a boat.
...
Is there a reason that a fuel injector would not work
spraying water? Doesn't have to be perfect.

 

fuel atomises, water doen't in the same way..

 

Marine carbs aren’t really any more resistant to corrosion.

With fuel injectors, assuming you choose stainless ones, you still end up with a problem with surface tension. What gives gas like liquids a nice spray pattern results in a stream that will shoot 30’ across a room with water.

FWIW, you DO NOT want fuel to vaporize in the intake, you want it to atomize and reach the chamber in that state

 

What if I took a fuel injector,
(its only function being timing)
and glued a 'windshield-washer-sprayer-nozzle'
on the end.
Keep in mind that the likely location of such a
contraption is immediately downstream of the
aftercooler (aka intercooler).