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Water Injection - THE FACTS!
I just FINISHED setting up the water injection kit and running it...
I have to say HOLY ----, even a half assed homemade kit makes a HUGE difference in power. My intake manifold is actually cold enough to touch even if I've been driving for an hour or two. Not only does it seem to cool things down dramatically, but the burn is better and I've been able to advance my timing and raise the boost levels... I haven't experienced ANY knocking at 8 psi with out intercooling, and with timing slowly advancing and using the AFC-Hack. Water injection is a no ---- major upgrade, I'll be making a write up of how you can do your own half assed homemade kit here soon :) |
Re:Water Injection - THE FACTS!
Does it spray constantly, or does your water injection have a pressure or manual switch? Does it use a lot of water all the time?
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Re:Water Injection - THE FACTS!
info and pics chacky!
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Re:Water Injection - THE FACTS!
I'm using a boost pressure switch (You can order tehse at napa) that has 4 preset intervals. 2, 4, 7, and 10 psi.
I used a saab intercooler as my reservoir, going ot have a box made to put around it so I can stuff it with ice. (Need to find an alumi-welder out here). THe pump is gravity fed and directly below the intercooler, the drain plug has a hose in it that drips down into the pump, from there it goes through my trunk wall under the cabin bins (del sol) up my ash tray area and into the engine compartment where its seated right before the throttle body. It's a misting head, .05 mm if I remember correctly. |
Re:Water Injection - THE FACTS!
couldnt u use a stock injector and mount it in your charge pipes?
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Re:Water Injection - THE FACTS!
This looks nothing liek a fuel injector. its a little round tip on the end of hte hose that mists the spray out in to the charge pipe just before the throttle body. Its a very slick setup nad easy to do.
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Re:Water Injection - THE FACTS!
isnt that like a jet for a carb?
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Re:Water Injection - THE FACTS!
ill have pictures of it in the next few days;)
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Re:Water Injection - THE FACTS!
We'll get pics up as soon as possible... I have a spare injector laying here by my computer from Aquamist that way I can show exactly how it is.
A fuel injector would work to some extent -> but the water has to become a mist or it can hydrolock. The nozzles that are used for water injection are never closed, its just a nipple with a needle pin point to spray whenever pressure is applied behind it. Basically for water injection you have... a 100 psi pump 12V DC (minimum) an open/close solenoid a boost pressure sensor water jet (injector) hoseing (fuel hoses) a relay and a reservoir The pump is usually gravity fed (if you go cheap) so the reservoir has to be mounted above it and the hose can't be bent at all or you'll choke the fluid process. The pump builds up the pressure at 100 psi, and sends it forward into the solenoid, which is electronically controlled by the boost pressure sensor...say you set it to open at 4 psi, then the water will come through the solenoid with all that pressure behind it and hit the injector nozzle and sprays all over the intake pipe. The relay of course is just to control the circuit :) Tommorow I'll be advancing the timing slightly more, just to test the waters of ping reduction with this to its fullest... it will be nice to not have that wobble effect when you let off the gas! |
Re:Water Injection - THE FACTS!
you went through all the trouble of water injection.... but didnt bother to use an intercooler!??
wierdness |
Re:Water Injection - THE FACTS!
don't really think an intercooler is necessary, I mean you can only cool the air so much...
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Re:Water Injection - THE FACTS!
I'm really lookign forward to seeing pics and an install guide like you said. It would be a good item to put in the projects page :)
I used to think about water injection until I read "maximum boost" it really talks down on it in there. Whatever helps though I'm there :) so get us some pictures and some instructions! |
Re:Water Injection - THE FACTS!
Imagine an ic and water injection ::) ;)
Pieter |
Re:Water Injection - THE FACTS!
Oh ya! I'm gonna run direct port water injection! lol 50 shot forsuraaaa
Hey whatever works right? Steve in our turbo projects was running 10psi on water injecton and no intercooler on a DX.. I would consider it, but I have never even touched that ---- before :-X Plus my intake hardly even gets hot at all. Jeff |
Re:Water Injection - THE FACTS!
ill be a son of a bitch...
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Re:Water Injection - THE FACTS!
make sure you stock up on that distilled water dude your tap water i dont car where you live is full of nasty contaminents that your engine would not like..
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Re:Water Injection - THE FACTS!
this is really sweet. I would consider something like this in a race application. Can't wait to see pics!
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Re:Water Injection - THE FACTS!
bottled water for my car it is :)
Its raining today or I'd have gotten pics :( I think an intercooler + water injection would be a good way to reduce temps back to ambient... but the water injection does more then the cooling the methyl alcohol creates a better burn in the engine and cleans off the cylinders/piston surfaces... Pleas eforgive me for not having the pics up yet... |
Re:Water Injection - THE FACTS!
Chacko,
are you using water or methyl alcohol in your setup? |
Re:Water Injection - THE FACTS!
i would rather use alcohol
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Re:Water Injection - THE FACTS!
It's a 50/50 mix... I mix it up in an old windshield washer container... well I put in 1/4 gallon of windshield washer fluid and a 1/4 gallon of bottled water... shake it up and feed it into my reservoir - btw it seems the saab intercooler can hold just a little under 1/2 a gallon of water :P before the lower tube will start leaking.
I need to find an aluminum welder here, so I can get it sealed off, I imagine it could hold another 1/4 gallon before overflowing out the top. |
Re:Water Injection - THE FACTS!
bottled water still have like magnesium sodium all that other crap human bodies like.
use distilled. |
Re:Water Injection - THE FACTS!
Wait so you mean to tell me you are burning windshield washer fluid too? WOW. That is brave. Have you seen the crap they put in the washer fluid?
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Re:Water Injection - THE FACTS!
I read the contents... believe it or not, the wal-mart windshield washer fluid is actually the best... its mostly methyl alcohol and a little bit of water.
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Re:Water Injection - THE FACTS!
just make sure not to get the stuff with the defroster antifreeze crap in it!
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Re:Water Injection - THE FACTS!
told everyone so ;D, too bad you guys don't work with water injection on rotaries because that's all i know how to tune, and for rotaries - inject as much water as u can until the car starts bogging (don't trip, rotaries don't hydro loc) booging = too much fuel, then you raise the boost and timing, and have fun! be safe on safe side.
i use water from safeway, distilled. alcohol is better though, burns more slower that way can create more torque (our friend). |
Re:Water Injection - THE FACTS!
cool need to know where the pics so i can get started on the project myself, also having trouble finding the seliniod, any suggestions
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Re:Water Injection - THE FACTS!
Pictures will be up on WEDNESDAY, as well as a write up on where you can order your parts... and kinda a walk thru.
I would suggest looking for a windshield washer reservoir that will fit in the engine bay, and finding a way to mount it -> most of the pumps are gravity fed so keep this in mind. |
Re:Water Injection - THE FACTS!
cool thanks for the info i will be waiting for the pics
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Re:Water Injection - THE FACTS!
Chacko,
Dude what water pump are you using? |
Re:Water Injection - THE FACTS!
found it all and it will work out let me get my ---- together and grab the site for ya'll
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Re:Water Injection - THE FACTS!
Originally Posted by shortyz
couldnt u use a stock injector and mount it in your charge pipes?
www.autospeed.com has an interesting setup as well. they use a DC motor control to run the pump, and use the MAP signal to control the motor controller which gives you water injection that's proportional to boost pressure. http://www.autospeed.com/A_1539/cms/article.html the general rule is to inject about 20-25% of the total volume of fuel in water, but the pressure switch setups seem to do really well. only trick is to figure a way to not run out of water, or to drop the boost to a level the engine can handle w/o intercooling if the water level drops too low or the pump quits for whatever reason. |
Re:Water Injection - THE FACTS!
I'm thinking of jerry rigging a master cylinder low fluid switch to light up an LED in the cabin when the fluid gets to a certain point. I carry 5 water bottles (8 fluid oz each) full of 50/50 mix and I just fill up every 1/4 tank of gas with one.
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Re:Water Injection - THE FACTS!
alcoy/water injection is a very proven way to increase boost and timing safely.
buick grand nationals actully have a light on the dash that says "power injection". Its there b/c GM/buick was going to factory equip the GN with water injection. They found that after something like 200K miles the water injection would "hurt" the cylinder walls, but that was under contious use. I guess they desided not to put it in the GN b/c they reallized that water doesn't refill its self after a lot of high performance driving... My best friend has a 800HP GN, and talks a lot. |
Re:Water Injection - THE FACTS!
http://www.frii.com/~maphill/wi.html
I just came across that; I don't really know how to do a good write up on this... if you have any questions though please let me know. BTW, you can get a good discount on Aquamist products if you mail this guy: Shane Lawrance (slowrance@austin.rr.com) make sure to tell him chackoperformance@attbi.com referred you. For 450cc injectors use a 5mm nozzle, it will give you the best results.. |
Re:Water Injection - THE FACTS!
you have a friend that's owns a 800HP GNX? i know someone with a GNX engine inside an RX-7, runs 10s on stock turbo.
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Re:Water Injection - THE FACTS!
Grand Nationals are ------- nasty cars :) I get to inherit one when I turn 21... but can't modify it till my grandmother dies.
Get this last months Hot Rod magazine, there is a huge article about a company manufacturing blocks for GNs capable of handling 2000 horsepower (its the actual casted block, don't think it includes internals though). |
Re:Water Injection - THE FACTS!
Yea its in Arizona.. Stage2 alum. block. My friends car is a stage2, ONLY 1000hp capable...
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Re:Water Injection - THE FACTS!
WHEN WILL WE GET TO SEE THE PICS
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Re:Water Injection - THE FACTS!
NEVER.. wait sorry there on my camera now i need to resize them and what not so give me 30 minuits.
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