Here is a DIY water injection system I put on the 2004' 6.0. It took a day to install and about $250. Thanks to 2004LB7 and Mdub707 for turning me onto the idea. Go to The Turbo Blog | Updates on my car projects, racing and other cool stuff to read about how and why to install water/meth/alcohol injection. There are detailed instructions, parts lists and cool video's at this site. Check out the pics! I also put the install on youtube.
The bike pump is to test the pressure switch. It came set to 3psi which is good.

 

Pretty cool. Let us know how you like it and what the difference is in EGT's etc.

 

Here are some things I have noticed sense installing the water injection.

The egt's are about 50 degrees cooler.

The boost boot on the top of the engine going into the intake elbow will leak a little oil when using the water injection. It never leaks otherwise. Do you think this is due to steam pressure? Do you think this could cause any damage?

My Amsoil dealer told me a story of a guy he knows who's water injection system failed. The solenoid, check valve or maybe lack there of caused water to fill up the engine while it was not running. When he tried to start it one of the rods broke. Water does not compress very well.

I don't notice any more power. I didn't notice any better mileage.

The relay blew twice in the first week. So I hooked it up differently. I ran power from the dash 12v key on, to the master switch on the dash, to the pressure switch, to the pump. Its been a week or so and is still working good.

I don't like the fact that the engine could fill up with water so I'm planning on running the system every once in a while then disconnecting the hose to the intake just in case. How often do you think the system needs to be ran to keep the internals clean?

I like the internal steam cleaning effect of the system but I'm up in the air whether I would recommend water injection or not..

 

Water by itself wont improve mileage or power really, the meth is what does that. Just water is good for what you're seeing, EGT drops.

As for the solenoid issue, as long as you have the solenoid, it should prevent that. You could also ensure the tank for your injection is mounted lower than the nozzle, so it can't just drain up that way. My buddy built his own system and never put a solenoid in, he had his almost hydrolock on him the first couple weeks, so after that he just parked with the front end pointing up hill until his solenoid came in.

 

So I'm sold on it now. I got some "boost juice" from strictlydiesel. Its just the half water half methanol. When I hit the switch I do feel a pull.

I also spun the boost boot around a few times to find the right spot and tightened the clamps all the way so no more oil leaks out of the boot.

I'm using the windshield washer fluid reservoir which is lower than the intake elbow. That being along with the solenoid, I think I don't need to worry about water getting in the engine.

I also wired it a little different. From the battery to the switch on the dash to the pressure switch to the solenoid and pump. I was getting some interference in the stereo speakers when I would hit the switch. It probably was not a good idea to get the power from the dash to run the whole system so I'm getting it straight from the battery.

 

Water injection systems are great, but they need to be properly installed. Your debris exposed pump location and rubber hoses need to be changed to avoid possible engine damage.

 

When I saw this thread I just knew that Whargoul would reply with a negative comment

 

This will cause engine damage how?

Though the pump is certainly in a vulnerable spot, a simple cover would surely help things. I would just be more worried about corrosion issues, not engine damage.

 

Great write up!

 

So Whargoul..??

This set up is on a street truck that will not go off road so I'm not worried about debris damaging the pump. However, next winter if I notice that the pump and solenoid are being exposed to lots of weather I may just build a simple cover.

The rubber hoses are fluoroelastomer fuel injection (biodiesel and E85 compatible) hoses and are rated for the proper psi (over 150psi) so there is nothing wrong with them.

And you throw out there possible engine damage could occur with this set up. An explanation of how this could occur would make some sense?