Water Injection

[brindo]

Hi,
I have a Yella Terra Whipple kit on a Holden V8 and intend to install water injection. The intake adapter on the supercharger intake has a spot cast into it for extra fuel injectors and this looks to be an idea spot to position the water injector.
Is the Whipple suitable for injecting water before the blower or will this do some damage?

Thanks

[MR_VX]

If u ask me water shouldn't never be sprayed into any motor, why not try methanol ?

[wraith]

Methanol or nothing.

[VT-565]

Ideal spot for a nitrous nozzle.

N2O or nothing.

[immortality]

Water injection does work, a 50:50 mix water/meth works even better.

Never noticed how the car always pulls better on a nice cold morning when there is a bit of fog/dew hanging around (Ohh that right, you don't get that in aussie)

[chargedvx6]

Those injector bosses on the charger are for fuel sources only. If you plan on injecting water alone it will need to be earlier in the intake or else there is s risk of wearing the rotors prematurely.

[OLX304]

Those injector bosses on the charger are for fuel sources only. If you plan on injecting water alone it will need to be earlier in the intake or else there is s risk of wearing the rotors prematurely.

Chargedvx6 you say if you inject water alone its needs to be earlier in the intake-so if you inject the water/methanol mixture in this location its ok??? What do the guys at Yella Terra think of this sort of cooling on the whipples? Has anyone else done this on a whipple before? I was thinking about doing the same thing to mine.

[Tsunamix]

Idealy, wter is always injected after pressurisation. High pressure water is essentially a cutting compound, so best to NOT do it before a 'charger.

Also, it's best done in conjunction with a pressure switch, so water injection doesn't occur until the psi hits a pre detyermined level. volume wise - 10% of the fuel volume being injected at that time, is close to ideal. So if your injecting 8 x 48cc injectors, running at 80% duty cycle, 8x48x0.8x0.1 = 30.72CC 50/50 water meth is close to perfect. So obviously your ideal injection amount varies with rpm and duty cycle on your injectors.

Since thats tough to do, vary it with pressure, which (generally) climbs with revs.

Make sure you use the right type of pump. Motors for things like windscreen wipers work ok at first, but are not designed for sustained use.

In your case - put a 18mm thick thermal gasket from MACE under the charger body. Put a spray bar down the guys of it. mount a pressure sensor in the plenum. Somwehre between 3 and 5 psi, turn the water injector on, use a controller on the pump motor that indexes it to rpm. Install a cut out so that the water pump shuts down when the throttle is fully closed.

End result will be 80% as effective as intercooling, rising to 110% as effective if you can get the supercharger body water cooled.

The engine will carbon up less, as the water mist will prevent carbon adhering to walls.

Dont be scared of water in your engine. Humidity does that every day anyway. What you must be sure of, is that water is not 'POOLING" anywhere.