Volute water meth injection.

Hey guys, has anyone ever injected water/meth mix into the volute of the turbo compressor housing?

The idea behind it is to cool down the air in the volute thus more dense air is being discharged and improving your efficiency range on your turbo.

I have tried it a while back on a N57D30a but my turbo was basically maxed out as well as my diesel pump.

so any extra air I would have generated would have been in vain so I did not gain any power as I had no extra fuel to use it.

Just curious if anyone has tried this and found some results.

not to be confused with pre-comp wheel injection.

It won't change the efficiency of the turbo just absorb heat.

Pre-turbo can increase actual mass flow by increasing inlet density.

But with heat being absorbed while the air is being pressurized it should allow for a more dense discharge from the turbo?

I thought about pre turbo but im sure the comp wheel will eventually have a hissy fit with the fine droplets.

Also to do pre turbo your nozzle placement will have to be 100% correct to avoid larger droplets hitting the wheel.

That's why im thinking about volute injection.

To get the air more dense in the most heated/compact area of the whole setup and have more air mass coming out of the turbo as a result.

Have a look at the old Indy Car 2.85l V8's, they had pre-turbo methanol injection using 4 injectors in a diamond pattern at the entry to the turbo housing.

essentially all i'm trying to achieve is to take a turbo that is being choked and just try and squeeze a bit more from it and let it run a bit more efficient for lack of a better term, without doing a huge conversion to a full frame big turbo setup

The real advantage of WMI is removing the heat from combustion chamber when transitioned from liquid state to vapour- this is where it really shines due to excellent latent heat of vaporization. Spraying water with methanol as mist droplets on to compressor housing will have some effect but not much since the surface temperature will not be as high as in combustion chamber meaning WM will not be evaporated that quickly... It would make much more sense to inject WM in to combustion chamber and adjust tune file accordingly - that would make intake air more dense and combustion chamber temperature cooler allowing to get more ignition timing and more power (let along methanol vapors aren't good for breathing).

I have the same conclusion on wmi as a whole.

I do have normal wmi injection.

Im thinking of a second solenoid controlled nozzle on the turbo of a compound turbo system boosting 45+psi which means the temps in the turbo comp housing will be quite hot.

So cooling the charge down in the turbo should have some benefits of getting more air out of the turbos.

Atleast that my theory.

I don't mind cooling the air, that's what the intercooler and primary nozzle is for.

Im simply trying to cool the air within the turbo which is in its most pressurized and hottest state.

Don't forget that water is displacing air (thus less oxygen gets to combustion chamber) so too much of it can hurt performance rather than helping. The other downside of using water is its tendency to form big droplets ( water is havier than fuel) in intake system that can result in uneven air and heat destribution between cylinders.

Turbos choke on the inlet, not outlet side.

The best place for post compressor AI for system efficiency/maximum power for a given fuel system capacity/turbo mass flow is after the intercooler.