water injection alternative
08-11-03, 08:05 PM
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water injection alternative
OK maybe I am stupid but is it possible to do away with an intercooler and use water injection instead for between 8-9 psi of boost?
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08-11-03, 08:21 PM
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well umm... not a good idea.
Your IC wont run empty, and blow your engine.
Your IC wont get clogged, and blow your engine.
Your IC wont leak, and blow your engine.
Water injection is ment to be an extra level of security, there are some sites i have read that people use water injection in the place of a IC but only when running low boost 4-5psi and dont have any room for a IC.
Why not leave your IC and run water injection too?
So yes it IS possible, but a very bad idea. Hell you could run NOS on a lawn mower and try to cut the grass with it, but thats also a bad choice.
Do you have a FC? FD? There are a few write ups about putting WI in a FD... Im working on the how-to for the FCTII.
Do a search on the topic and you will find loads of info.
jaared
Your IC wont run empty, and blow your engine.
Your IC wont get clogged, and blow your engine.
Your IC wont leak, and blow your engine.
Water injection is ment to be an extra level of security, there are some sites i have read that people use water injection in the place of a IC but only when running low boost 4-5psi and dont have any room for a IC.
Why not leave your IC and run water injection too?
So yes it IS possible, but a very bad idea. Hell you could run NOS on a lawn mower and try to cut the grass with it, but thats also a bad choice.
Do you have a FC? FD? There are a few write ups about putting WI in a FD... Im working on the how-to for the FCTII.
Do a search on the topic and you will find loads of info.
jaared
08-12-03, 02:06 AM
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I have searched on the topic some, and I know how it works and all that and it really doesn't seem to be a big deal to install. My main question was because it is cheaper than an intercooler and doesn't require fabrication of piping and stuff like that, so I was wondering if it could be used as a replacement. And the Water injection only turns on during boost, and you can hook up a light that lets you know if it is pumping and you can hook it up to the washer reservior because it doesn't mind certain types of alcohol like methanol to know if it is running low.
but you are most likely right than an intercooler is most definately the best way to go
but you are most likely right than an intercooler is most definately the best way to go
08-12-03, 06:07 AM
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Something I saw that I thought was a good idea is the kits that spray CO2 on the front mount intercoolers. Its intended for racing applications, but it pretty cheap. Cheap to refill the CO2 also.
If you want to inject water, it would be better to use it in conjunction with an intercooler. Make sure you atomize the water into a mist. Straight water isn't good because your piston or rotor can't compress it. It can crack or damage heads or housings or even lawnmowers
If you want to inject water, it would be better to use it in conjunction with an intercooler. Make sure you atomize the water into a mist. Straight water isn't good because your piston or rotor can't compress it. It can crack or damage heads or housings or even lawnmowers
08-12-03, 08:28 AM
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Do you have a TII? If so, just leave the stock TMIC and run water injection as well. The stock IC is an efficient core, and I believe it to be fairly efficient with its location even at higher boost levels (12-15psi), unlike everyone else who thinks it is a worthless piece of junk.
There is really no reason to completely replace a IC with water injection, especially when the IC is still effective.
There is really no reason to completely replace a IC with water injection, especially when the IC is still effective.
08-12-03, 10:12 AM
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Excuse me for trolling through...This is not my section, but hey...
In my water injection thread on page 6 or 7 (the last page) we are discussing getting rid of the IC. My intercooler is useless at this point. Its just a backup. Water injection is far more complex than an IC, which leads to questions about reliablility. In discussing reliability lets talk about the things that can happen:
1) You can run out of water. I think anyone running out of water is an idiot. Its your fault. PERIOD. I have to put oil in my car every sunday, now I put water in too.
2) Injectors clogging. Ask anyone that has WI for a long time (Marshall, Rice racing) they will tell you that the injectors dont get clogged. the injectors have a filter, the pump has a filter *AND* in my case I have a filter in the water line before the pump.
3) Your pump can stop working. Pumps last a LONG time. But the possibility is there. I have addressed this below.
4) Wiring and fuses. You have LED's and warning lights to tell you that the wiring and fuses are all good before you boost.
running around in 19-25C intake temps in the heat of the day is pretty nice with my FD. If I ever decide to get rid of my IC I would likely do the following. Keep in mind I have not completely solved every problem, but its a start.
I would have 2 pumps, 2 boost activated switches, 2 relays, 2 selenoids and 4 injectors. Each pump will have a selenoid connected to each of its lines, which in turn will connect a hose to two injectors. Injector 1 for pump 1 will be 1.5 GPH and will be in the location that the Intercooler used to be. Injector 1 for pump 2 will be 2.5 and will be in that same location. Inejctor 2 for pump 1 will be 2.5 GPH and be located at the elbow near the manifold entrance, injector 2 for pump 2 will be 1.5 GPH and be in the same location.
This setup will be redundant. Its not possible to have 4 clogged injectors (besides, semi monthly maintenance will be to clean them). If one pump dies, or if your are stupid and run out of water on one pump, you are still protected. If power ever does not get to either pump you will get an audio warning by use of a flasher or some circuit as well as the visual LED will not light up.
Complicated? yes. Fun? HELL YES. The intercooler could never, ever cool like water injection. Its advantage is that its rock solid reliable.
In my water injection thread on page 6 or 7 (the last page) we are discussing getting rid of the IC. My intercooler is useless at this point. Its just a backup. Water injection is far more complex than an IC, which leads to questions about reliablility. In discussing reliability lets talk about the things that can happen:
1) You can run out of water. I think anyone running out of water is an idiot. Its your fault. PERIOD. I have to put oil in my car every sunday, now I put water in too.
2) Injectors clogging. Ask anyone that has WI for a long time (Marshall, Rice racing) they will tell you that the injectors dont get clogged. the injectors have a filter, the pump has a filter *AND* in my case I have a filter in the water line before the pump.
3) Your pump can stop working. Pumps last a LONG time. But the possibility is there. I have addressed this below.
4) Wiring and fuses. You have LED's and warning lights to tell you that the wiring and fuses are all good before you boost.
running around in 19-25C intake temps in the heat of the day is pretty nice with my FD. If I ever decide to get rid of my IC I would likely do the following. Keep in mind I have not completely solved every problem, but its a start.
I would have 2 pumps, 2 boost activated switches, 2 relays, 2 selenoids and 4 injectors. Each pump will have a selenoid connected to each of its lines, which in turn will connect a hose to two injectors. Injector 1 for pump 1 will be 1.5 GPH and will be in the location that the Intercooler used to be. Injector 1 for pump 2 will be 2.5 and will be in that same location. Inejctor 2 for pump 1 will be 2.5 GPH and be located at the elbow near the manifold entrance, injector 2 for pump 2 will be 1.5 GPH and be in the same location.
This setup will be redundant. Its not possible to have 4 clogged injectors (besides, semi monthly maintenance will be to clean them). If one pump dies, or if your are stupid and run out of water on one pump, you are still protected. If power ever does not get to either pump you will get an audio warning by use of a flasher or some circuit as well as the visual LED will not light up.
Complicated? yes. Fun? HELL YES. The intercooler could never, ever cool like water injection. Its advantage is that its rock solid reliable.
Last edited by ZeroBanger; 08-12-03 at 10:24 AM.
