Saikou kun and talon2evo here is a link to the Aquamist site:http://www.aquamist.co.uk/. Unfortunately the threads I want you to read requires a password to gain access. Go ahead and register on their forums and do a search and just read up. Educate yourself. The water/alcohol injection thing is still in its infancy among the Evo owners on this forum. We need more people who can give constructive feed back so we can learn from each other .

 

I am registered in that forum. I read that thread. I agree that that particular technique has many benefits for added power.
Water injection is not scary.
What IS scary is spinning a turbo with obvious damage. I saw the photos.
The owner of that vehicle stated, that it happened over a period of a year.

My constructive feed back is to leave the pre-compressor spraying to pros because they understand the pros and cons of doing this. Plus, they have BUCK$


no quarrels

 

You're right that there may be a risk factor, but it may have been that this guy was injecting too much water to begin with. Were you able to see the adapter that Richard had made up on the Skyline? That is the type of set up I will be trying. I will also probably try a very small .3mm nozzle to just keep a very fine mist going into the impeller. I'll just start very conservative and will take a picture of the impeller before I start all this and compare it as the time goes on.

 

Yes, I saw the prototype you mentioned, it looks awesome ! I remember Richard mentioned that he would rather have the fluid flowing through one of the supports. I totally agree with this because the current aquamist nozzle requires the plastic hose to be in the direct air flow. Even if it is secured some how, I think it is some what of an undesired object in the airflow, and at high intake velocities, I would expect that the hose would undergo alot of abuse (resonance shaking etc.)
Pre-compressor spraying seems to offer tremendous performance gains, but I recommend everyone to sign up at the aquamist forum and read up on it, so they can make a well informed decision for anything they might be considering

aquamist forums uk

 

I am also new to this "pre-turbo" injection concept.

There are many excellent contributions on that forum, images, dyno plots and theories. Above all, there are actual people who has been using it for years and posted their findings. Worth reading.

I have made a few mechanical contributions to help people with their projects. The aim of the bracket was to minimise the compressor wheel wear by concentrate the spray into the centre part of wheel - lower tangential speed. Most of the wear from the posted imaged are on the leading tips of the wheel.