My new water injection plans

[niky]

Originally Posted by Keito

DevilsOwn Methanol Injection : Water Injection - DevilsOwn Injection

The owner has come over here a couple of times. A friend tried it out on his (non-turbo) car... good for a small hp bump without a turbo, but not dramatic enough a gain to justify the price of the kits. Great on turbos, however... especially given the tropical weather.

[KingZiptie]

I decided to register just because of this topic and the fact you own a DR650 I took a DR650 to Alaska from Pensacola, FL in 2013 and that was a blast. Ive also got a 4 banger duratec 5speed ranger, and have been reading up on how to improve my mileage.

Anyways, I thought Id put out another idea. The injector seems like it could be very cool, but as you mentioned its a pain to prevent it from clogging up. Perhaps you could filter the water with a reverse osmosis setup first? Or maybe run the water through a fuel filter? This may be a really dumb idea- not sure.

Back when I was a kid (late 90s), my dad and I worked alot on an 85 Chevy El Camino. One of the things we did was install what he liked to call "water induction". We took an old antifreeze bottle, a piece of garden hose, a wick meant for an oil lamp, a needle valve (can get them at home depot), and some vacuum line.

1) Put a vent in the antifreeze bottle where the handle was.
2) Cut a hole in the cap and affixed an adapter to slide the garden hose and vacuum line to.
3) Put the wick in the garden hose (which was inside the antifreeze bottle where the water was)
4) Connected the vacuum line at the top (outside of bottle- top of cap)
5) Ran the vacuum line to the needle valve, then vacuum line out of the needle valve to one of the vacuum ports on the carburetor (could run it to a vacuum port in a throttle body too, or use a T where a line goes to operate something else)

Setup> Run the engine and get it warmed up. Start opening the needle valve until the engine starts to stumble, then back it off until it runs right. I remember our gas mileage went up a few mpgs and power was better. We used this simple setup for about 2 years. About every couple months wed "reset" the needle valve when we noticed water consumption was starting to drop (due to buildup in the needle valve). That thing used a lot of water! We didnt even filter it!! I used to laugh when hed come pick me up at school- 75 in southern california middle of the afternoon and here comes the El Camino with steam coming out the exhaust. I would imagine it might be pretty hard on exhaust systems, so keep that in mind..

Maybe you could incorporate some parts of the above into your plan? I will be following your thread

**EDIT** Not sure if a fuel injected vehicle would stumble the same way. I imagine the computer might start leaning the fuel trims as it took on water, but im not sure. I might actually cook up Dad's old water induction and put it on my Ranger. I have an UltraGuage so I could monitor fuel trims to see..

[oil pan 4]

Slime can grow in the water tank after a while.
That is what occasionally causes the clogs appear to happen for no apparent reason.
Use a little bit of methanol to kill it.
Filtering is always a good idea, as you said.

[oil pan 4]

2x

[AndrzejM]

Interesting idea.

[deejaaa]

reminds me of one i got from a neighbor in the 80's. it was built commercially but was old when he gave me it. the jar was very large and was hard finding a place to put it. was too young to care about measuring mileage but remembering him say it did and that was the reason i tried it.
this is a homemade unit and the operation is the same:
Rambo1965's Water Injection Thread - JeepForum.com
pics in case the link gets broken:

[Coyote X]

The 6V pump worked with a diode on it so it would not get the inductive kickback from the injector. It seemed to pump about the right amount of water. But I had one major problem with this setup. It somehow made the car run very rich. I am thinking the motor being in parallel with the injector kept the injector open longer than usual. Either that or it confused the computer somehow. I am not sure what was causing it but using the water I was only able to get about 53MPG even if I wasn't actually pumping water. For this car that is absolutely terrible for summer driving. After unhooking the motor the mileage went back over 60 so it was doing something wrong.

I need to build a small transistor circuit to feed the injector signal to the motor without actually loading the injector circuit. A quick look around the web found this: https://web.archive.org/web/20120320...g/diy_aid.html It looks like it would be a pretty simple thing to build. I will probably build it and try again.

I think the setup has promise and will work once I get the details figured out. I just have to get time to build that circuit and try again. But I do like the setup described by KingZiptie so I might also try that if I can find all the parts laying around for it.

[oil pan 4]

Water injection typically lowers fuel milage in gasoline motors unless its setup exactly perfect.

[Coyote X]

water injection actually helps the mileage on a gasoline engine. I have never tried it on a diesel. But I have tested and have repeatedly been able to get about a 5% increase in mileage with a ratio of 10% water to gas. You can go way over that ratio and it won't change much other than dump water out the tail pipe. On some tests in the past I have gotten close to a 50-50 mix on a warm engine when I messed up the regulator setup but the car ran fine and didn't do anything other than use up the bottle of water way quicker than it should have. I haven't seen an increase in mileage going beyond the 10% mix so that seems to be the sweet spot.

The trick is just to get a reliable method that is easy to duplicate and install on most cars without having to go to something like a megasquirt computer or some other extreme stuff.

[oil pan 4]

6 pounds per hour would not be a bad starting point.
When I reinstall my water injection on my diesel I want to use well under a gallon per hour.