Water Injection - THE FACTS!
07-09-2003, 10:51 AM
#101
3.0 BAR
Join Date: Feb 2003
Posts: 9,089
Re:Water Injection - THE FACTS!
Originally Posted by MR_DR_PEP
In the meantime, I just rigged up an intercooler spray system that sprays ice cold water all over the intercooler only when I flip on a switch. It's only good for using on the dragstrip where I can play with it and dump in ice and cold water.. The whole deal cost be $24 bucks... a water res. (1 quart)..., water pump, hoses and nozzles... it really does work, and allows me to bump up the boost and it seems to cut out detonation. I need to tinker with the nozzles some to get it to work to it's best though... I did it just for fun, and it took about 1 hour. When I get it cleaned up, I'll take some pics ... lol
07-09-2003, 03:36 PM
#102
1.5 BAR
Join Date: Dec 2002
Location: Nashville
Posts: 807
Re:Water Injection - THE FACTS!
^dang, didn't think about that... I'll be sure to take caution. I'll spray before I get on the track to get the intercooler cold and ready, then I'll flip the switch a little way down the track. I messed with it today, and it seems to work pretty good. I can't say that it made any real diff in power (maybe a little), but it seems to cut out the pinging after taking off at a stoplight. ... and it's a pretty cool concept. I cleaned it up today and there's really nothing visible except a small water tank, and a switch on the inside, and that's it.
07-09-2003, 04:45 PM
#103
1.5 BAR
Thread Starter
Join Date: Dec 2002
Posts: 1,495
Re:Water Injection - THE FACTS!
Originally Posted by Turbodelsolman
Why not just use your windshield squirters and put a 90 degree angle sprayer on the end.(whole setup cost me 79 cents 
)
)Thats right suck water right into that turbo compressor. Seriously, this is not practical because you have to leave your thumb on the windshield washer button, it is not going to give any benefit (the turbine blades are going to be so hot that the chemicals will just atomize and stay near there, corroding and wearing out the blades. <br><br>
You can use a 2 gallon or a 90 gallon reservoir, it doesn't matter. Just keep in mind that the pumps are usually gravity fed, which will limit the way that you install your reservoir. I am using a Saab intercooler as a reservoir, and managed to thread a screw into one of the drain plugs on the bottom, using that to feed to my pump.
I am not sure how much of it is emptying, but I do know that it doesn't really need to be filled up except every 2 tanks of gas or so. I usually top it off every time I put gas in the car. But I have drove over 600 miles without having pinging, this is also with the boost sensor set to activate at 1 psi.
07-10-2003, 01:56 PM
#104
1.0 BAR
Join Date: Dec 2002
Posts: 641
Re:Water Injection - THE FACTS!
Whats your timing set at now? If i put a WI kit on my setup that's already intercooled, how much should I safely retard the timing? Also, should i just take the intercooler off when i put the WI on, wouldn't that seriously decrease my lag?
07-10-2003, 05:16 PM
#105
1.0 BAR
Join Date: Jan 2003
Posts: 403
Re:Water Injection - THE FACTS!
Originally Posted by Turbodelsolman
Why not just use your windshield squirters and put a 90 degree angle sprayer on the end.(whole setup cost me 79 cents )
)you would have to have the same type of container to hold the icewater. a pump etc.
I guess what i am saying is ...
say you have a 2" charge pipe make the same charge pipe in 3" to encase is for a short length. and flow ice water through the void.
just another idea i will never have time to try
I
07-10-2003, 07:48 PM
#106
1.5 BAR
Thread Starter
Join Date: Dec 2002
Posts: 1,495
Re:Water Injection - THE FACTS!
You have to play with the timing, I'm not using any fancy machinery just moving the distro on my car to adjust timing.
Leave your distro fully retarded at first, run it, and advance a little bit each time till you feel comfortable. You will be surprised at how much power you'll get.
The ice water idea may work, have a pipe inside a pipe, except that the air is moving so fast it won't have alot of time to disipate heat. An intercooler really works well because it moves the air around so much that it has a longer chance of dissipating heat (it also takes advantage of the fins method).
You've got a good idea, draw up a prototype
Leave your distro fully retarded at first, run it, and advance a little bit each time till you feel comfortable. You will be surprised at how much power you'll get.
The ice water idea may work, have a pipe inside a pipe, except that the air is moving so fast it won't have alot of time to disipate heat. An intercooler really works well because it moves the air around so much that it has a longer chance of dissipating heat (it also takes advantage of the fins method).
You've got a good idea, draw up a prototype
07-11-2003, 12:19 AM
#107
1.5 BAR
Join Date: Jan 2003
Posts: 1,115
Re:Water Injection - THE FACTS!
The bad part about spraying ANYTHING LIQUID onto the IC is that it is going to get on the turbo sooner or later, and water on the EXTEMELY HOT turbine housing = cracked housings.
My friend and I were discusing the heat sheilds that are avalible to go around the turbine housing and how it would prob. crack the housing pretty quicky, and he noted that water is also another reason they crack and I was like "great, there goes my window spraier on-jection".
On some cars it wouldn't be a problem, but hondas turbo sits right by the radiator, which is of course right behind where the sprayier are shooting..
My friend and I were discusing the heat sheilds that are avalible to go around the turbine housing and how it would prob. crack the housing pretty quicky, and he noted that water is also another reason they crack and I was like "great, there goes my window spraier on-jection".
On some cars it wouldn't be a problem, but hondas turbo sits right by the radiator, which is of course right behind where the sprayier are shooting..
07-12-2003, 02:47 PM
#109
1.5 BAR
Thread Starter
Join Date: Dec 2002
Posts: 1,495
Re:Water Injection - THE FACTS!
A heater blanket won't cause metal to crack thats the stupidest thing I've ever heard.
A heat blanket is just an extra piece of material to absorb the heat as it builds up from cold to ambient to hot. The heat shields are the same thing, if they're constructed from a stiffer natural element (such as steel or iron). They are designed to hold heat, and release it very steadily. I can understand after talking to Onyx about maybe them cooling down to fast and letting cold air hit the turbo, but that would just be a poorly designed heat shield.
When you throw cold water onto a hot piece of metal, the molecules go crazy trying to get closer together on the metal and they ------ out in the water. This is what causes cracking. If you held the piece of metal consistently in cool water there won't be a problem.
A heat blanket is just an extra piece of material to absorb the heat as it builds up from cold to ambient to hot. The heat shields are the same thing, if they're constructed from a stiffer natural element (such as steel or iron). They are designed to hold heat, and release it very steadily. I can understand after talking to Onyx about maybe them cooling down to fast and letting cold air hit the turbo, but that would just be a poorly designed heat shield.
When you throw cold water onto a hot piece of metal, the molecules go crazy trying to get closer together on the metal and they ------ out in the water. This is what causes cracking. If you held the piece of metal consistently in cool water there won't be a problem.
