Water Injection

[sil80drifter]

Hey guys, I've searched the whole forum (typng in "water" and "water injection") and haven't foudn anything on it. Does anyone know what gains are to be had form such a setup? what it requires? Are there negative sides to it? What is the cost of a water injection kit? Is it just a big hoax or does it really work? I hope this hasn't been covered a thousand times, I just couldn't find anything on it. Thanks in advance,

sil80drifter

[midnightshadow]

i've heard a bit about it and it does seem like a good idea(if it does actually work). check this site out HTTP://home.att.net/~MabuhayCarlos i know he talked a bit about it but i don't think he says if he used it. bu u may want to contact him and see.

[sil80drifter]

Yep, yep that's where I got the curiosity from, but I think he abandoned the site a while ago, because some projects aren't even explained beyond their "company commercial" level and his opinions stop after he got the turbo I think. So still if anyone knows what the pros/cons of water injection are... Or anyone ever used it and can tell from experience... Don't be shy now.

sil80drifter

[Thor]

Hmm. I looked at the site; downloaded the pdf file. I just can't get over the idea of spraying water into the intake manifold. I've always attempted to do just the opposite.

I need to hear testimonials before I'll believe it works.

-Dave

[sultan]

water injection cools intake temps and supposedly suppresses detonation. agm has water injection on his supercharged q. this is the system he used http://www.aquamist.co.uk . check out the faqs. that site says you won't really gain anything on na cars unless you increased the compression ratio, advanced the ignition, or are running a lower fuel grade than recommended. says it gives people an alternative to intercooler upgrade, fuel dumping, low compression pistons and fitting ignition timing retardation devices.

[S-14boy]

Ive looked into water injection before, they used to use it on cargo airplanes when they would carry a lot of stuff they would use it to help get the extra speed for take off. It would only last for a lil while thats about the only bad thing about it.Check out these sites about h2o injection:http://www.wangan-speed.com/vapor%20jet%20home.htm and http://home.ccci.org/key_infor...n.htm

[lucas_420]

Hmm. I looked at the site; downloaded the pdf file. I just can't get over the idea of spraying water into the intake manifold. I've always attempted to do just the opposite.

I need to hear testimonials before I'll believe it works.

-Dave

it does seem strange, one of my concerns is eventual rust.

Although, the way I see it (from what I have read) is there is just a fine mist of water being injected. This water is quickly evaporated cooling the air. The end effect should be no worse than running the car on a cool day.

I remember reading about water injection in one of the import mags out there, but I can't remember for the life of me which one. What I do remember is the car it was on was a very high HP turbo'd car (maybe a supra) and it looked like the owner had really done his homework, so I think they are a good idea.

Just be sure you do a lot of research first.You don't want some half-@sser hooking up a garden hose to your intake.

PS: if anyone goes through with it, let me know how it comes out

[C-Kwik]

Water injection sprays a fine mist of water that atomizes in the combustion chamber. When it does this, it soaks up a lot of heat. This helps prevent detonation particularly at higher boost levels where the fuel source is adequate for the desired boost and you are still getting detonation. But it should not be used as a fix for detonation on a street car. If you run out of water, you could end up with a blown motor. Typically, a good application might be to reduce the chances of boost if you decide to crank up the boost for a race. But this does not negate the need to provide the proper amount of fuel.

[Thor]

It reminds me of the "Cool Zone" water-mist fans on the sidelines of NFL games...

therefore:

Pistons = Football playersWater Device = Water Device

Alright, this analogy sucks.

This system seems like a good idea on paper...I question the durability/longevity of such a contraption. Also, I'm wondering if you would need to tune the car for this type of application - doesn't seem like you would have to...but...

[sil80drifter]

In other words, it probably would not yield a performance/economy gain for the N/A 240 motor. I guess this is what I really wanted to find out, because the sites that advertise those water injection products, claim HP gains and/or better gas mileage. I could use either or both, hence my interest in that product. Has anyone used it on an N/A car? Anyone? I want to know for sure, but obviously don't wanna buy it and then find out (as broke as I am, that kind of experiment is not posible).Thanks a lot for the links, btw.

sil80drifter

[lucas_420]

with money as an issue I say save it for later. If you eventually boost or stroke the motor then by all means get the injection kit, but until then your money would be better spent on a K&N filter.

[sil80drifter]

I have a K&N style filter, all i need is for it to be connected to a turbo and that o be connected to a sr20

sil80drifter

[C-Kwik]

On an N/A motor, it might help if you are experienceing detonation. BUT, I would never use water injection as a fix for anything. Particularly not when it's being driven under normal circumstances. I'd only consider it for a race only application if/when I were to turn up boost to a level where mechanical methods of preventing detonation can no longer be effective or reasonable at controlling detonation. And as soon as I am done racing, I'd turn down the boost and turn off the water injection. It can be made to be used all the time, but you will need to make sure there is always water if you are going to boost. Too much hassle for a street car if you ask me...

[S-14boy]

In 1963 Oldsmobile used water injection on their Jetfire. It was turbocharged:commonly known as water injection, uses a mixture of half water and half methyl alcohol carried in an underhood reservoir. The fluid was injected into the intake manifold when maximum power was called for, and the rate of use varied with the heaviness of the driver’s foot. Under easy driving one might get up to 3,600km (2000 miles) out of a quart; a hot rodder could use it all in 360 km (200 miles). http://www.ucalgary.ca/~csimps....html

[sapix @ RHIT]

I think SCC did an article about it, or included it in an article. They had the system on an SR20DET if I remeber right. When the water injection system is going a much higher level of boost can be run. When your off the water, you've got to reduce the boost. If water runs out the engine will most likely blow. The biggest thing to remember is water is heavy. Most of these system have something like a 5 gallon tank that goes in the trunk. I've heard about it for turbo cars frequently, but never for NA. Its a good thing for the guy who's got everything. Maybe look into it before NO2

[sil80drifter]

u guys are great, thanx for info

sil80

[skatanic28]

ive seen a few people use a switch and then hook it up to the wot sensor. this way you control when you wanna spray. even if youre not gettin detonation on a boosted motor, it still decreases air temps, so that would yield slightly more power, in addition to even further decreasing the chance of detonation. the only car ive seen this on also had water sprayers on the bumper aimed at the intercooler as well. all drawn from the same reservior. same switching system.i know its a bit much, but seems like a good idea.