I am kind of infamiliar with water injection systems, I had a look at http://www.aquamist.co.uk/ and got an idea, but I mean does this really work, even with just water? not methanol, alcohol or what have you?

I am asking this since I am boosting my z06 in no time. But again, if injecting water does all those miracles, then so would humidity. Someone please correct me

 

bump

 

No, but meth really works if tuned

 

Thanks for the reply, waiting for more input.

 

Is water really good for your engine though?

 

The water you are injecting is cooler than the humid air that's already been compressed. When you spray water or methanol the tiny water molecules absorb some of the heat in the air. Heat just automatically goes to the coolest area. Actually water is the better than methanol at detonation retention. But methanol provides a horsepower boost and good cooling as well so most people want more power as well if you tune for it. Methanol also acts as an antifreeze.

The tiny water molecules turn to steam inside the combustion chamber. It takes a lot of heat energy to turn the water droplets into steam. In other words, the water droplets soak up even more heat energy in the combustion chamber when they turn to steam.

The bad news is vaporized water displaces a large volume and could be used by more useful molecules. However the reduced temperature and corresponding density increase more than makes up for the loss in volume.

Basically it makes the incoming air denser. Less chance of detonation with the chamber temperatures much lower.

The best part is you can safely run more boost everything else being equal since the detonation threshold is higher.

Even fuel has some cooling properties. A rich tune will run cooler than one that's lean.

I think what would be really cool is to have two small injection systems. One water injection right after the air intake filter and before the intercooler and blower or turbos. Then another right before the throttle body for the methanol. Methanol does have a corrosive property to aluminum or to the compound that protects aluminum but I can't remember exactly.

 

My other vehicle is an older Mercedes 500SL. Now this was before the supercharged SL55AMG came out. I installed a custom Maggie setup and my IAT was 200F on a warm day at 5PSI boost. Lots of heat soak and whatever. Felt like a potato stufffed in the tail pipe. No way in heck I could install intercooling. Anyway, I installed an Aquamist system that injected a mixture of water and Heet. The boosted IAT never went above ambient again. So it does work. And the engine survives to this day. (The Aquamist was popular on the World Rally Circuit.)

My DD is a H/C C6.

 

wow thats nice to hear, my Vortech kit for the Z is intercooled, but I could use the extra benifit of a water injection. Do you have any idea how much it cost?

Thx!

 

try snowperformance.com or ECS

 

Some caveats: the injector nozzles should be positioned downstream of the S/C or TT as well as the intercooler. This provides the best efficiency. Water molecules can destroy the hyper-spinning blades of a turbo. You can set up simple relays triggered by IAT and/or boost sensors to inject water only when needed. Lots of info on the web. Just Google it.

 

HEET = METH