cheddaboy

Im just trying to figure out ways to lower the IAT on my charger. Just for kicks and I came across this. Seems like a safe enough spot for it. Has anyone here tried this? Any positive results? Is it possible to inject closer/directly at the impeller? Does this seem unreliable?

Tommy_J

I like to inject upstream of the compressor. This way cooling from evaporation occurs during the compression process. It results in better cooling and increases the compressor efficiency. I've had many set ups that injected the spray directly into the face of the compressor and have never had any impeller erosion. Just make sure there is no way the liquid can puddle and then get pulled in because that can erode the impeller.

cheddaboy

Oh, so you've done this? Do you stick with a 50/50 mix or just water?

camuman

Spray either few inches before throttle body or do direct into intake manifold. You can do a secondary run to that spot and spray preblower but don't just do that.

What are you trying to gain with meth water spray?

bruthaboost

That is not the optimal position. Like camuman said, it's okay for a secondary. What happens is yes you cool the air charge, however you get poor atomization distribution since your pushing through more heater exchangers louvers than you can count AND you may end up cooling your aftercooler (which is wasting the heat adsorption capacity of your meth/water)depending on ambient conditions.

s2konroids

I've done it on my old setup dropped temps by 25c using standard heat exchanger on a comptech Novi 1000 running 3 inch, didn't yield much power. That location is not optimal you want good atomisation.

s2k manic

have meth on s/c s2000 for 3 years sprays in just before throttle body reduces puddling which really does happen like you get on it then get back out. have run it on compound turbo dodge cummins for 8 years spraying into the intake horn 2 jets on that guy as long as you route the system correctly and keep the lines short it works great

JUSTINTHECOASTIE

Position nozzle closer to throttle body, don't use 50/50 meth ratio, try to use 60water/40meth for a wider safety margin then adjust the ratio as you may

timg

Always inject water after the after cooler. You want the after cooler to be as effective as possible, this happens with the greatest temperature differential possible. Any water injected after the after cooler that does not immediately change phase will do so in the combustion chamber.

Tim

Tommy_J

I run 50/50 for most of the year but mix it at 60% meth and 40% distilled water in the coldest part of the year. That gets a bit more fuel into the engine to go with the denser air.