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Location:
Newcastle
Registered:
June 2002
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Intercooler Water Injection
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Mon, 10 May 2004 09:36
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I would like to set this up on my AW11 GZE Intercooler. So that I can get full use of my 175mm crank pulley.
Apparently a kit can be purchased for around $200.
Does anyone have any exerience with this setup? Was it installed easily? Does anyone know where I can get a kit from in Australia and for how much?
Thanks in advance.
I struggle to get past 10PSI with my stock cooler.
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Location:
Melbourne
Registered:
February 2003
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Re: Intercooler Water Injection
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Mon, 10 May 2004 10:50
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Do you mean spray on the intercooler, or into the intake. I had both on my race car, and didn't find a noticable difference. I do have a reasonably large intercooler, made from two Soarer ones welded together, and the wind was pushing through at 200 mph. My intake ran 10 degrees over ambient, which I was surprised at. The water made no noticible difference.
For the intake spray, I used a fog nozzle from a company that I think is called Spray nozzle engineering in Moorabin in Melb. Pretty cheap, 6 bucks each from memory. I used a diapghram pump like they use on the 12 volt farm sprayers, which I bought at a swap meet for $25. These pump at over 100 PSI, with a reasonable volumn. It worked OK, but stank of roundup. I then used a rising rate fuel regulator from a turbo engine so that it maintained an even pressure over the intake manifold. Seemed to work fine, but made no diff for me.
I also made a spayer to spray water into the front of the intercooler, which also seemed to work well, but again didn't help me. I used a headlight washer pump from a Mazda, an ES something from memory, and fed it into some plastic 360 degree irrigation fittings from the local garden irrigation shop. I had to restrict the flow to stop it pumping too much, and it took about 4 types of jets until I found ones that worked well with the relatively low pressure from the headlight washer pump.
[Updated on: Mon, 10 May 2004 10:53]
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Location:
Newcastle
Registered:
June 2002
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Re: Intercooler Water Injection
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Mon, 10 May 2004 11:43
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thanks mate.
I am only a newb to the world of forced induction. So forgive me if I say something dumb.
I am not exactly sure how it works. I thought that water was injected into the intercooler to cool the air as it passed through and thicken the air, for increased flow and for bigger bang due to cooled air. It was suggested to me by a member of mr2oc.com that I could use this setup to get 12+ PSI out of my SC with the 175mm fitted.
Thanks for telling me that it could be a waste time. I thought it might help me to get to increased HP and torque and maybe boost which would be great.
At the moment I am only getting 10 psi.
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Location:
Melbourne
Registered:
February 2003
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Re: Intercooler Water Injection
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Mon, 10 May 2004 11:52
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I don't want to scare you off trying, as your car and mine are vastly different. The water spray into the intake is on the web, and google will bring up plenty of pages and dicussions on it. I put it on as I thought it would help to control knock. As it turned out, I used Avgas to run the car, and had no knock problems. When you say that you can't get past 10 PSI with the stock intercooler, does this mean that the intercooler is restricting the flow, because I don't think any amount of water will fix that.
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Intercooler Water Injection
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Mon, 10 May 2004 11:56
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whats stopping you from getting the higher boost at the moment? lack of fuel? ecu probs? detonation?
depends whats causing the problem as to what one can do to fix it.
water injected INTO the manifold/plenum etc to be consumbed by the engine is one way of overcomming detonation problems experienced by engines running higher boost
im quite suprised jbrough didnt notice the increased boost threshold before detonation in his setup 
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Intercooler Water Injection
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Mon, 10 May 2004 11:57
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| jbrough wrote on Mon, 10 May 2004 21:52 |
I thought it would help to control knock. As it turned out, I used Avgas to run the car, and had no knock problems.
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yeah, that could do it 
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Location:
Newcastle
Registered:
June 2002
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Re: Intercooler Water Injection
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Mon, 10 May 2004 12:49
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The other day I sat a wet cloth on the intercooler and I was seeing 11-12 PSI and this was the same day I installed the Apexi filter. This is why I thought that the water injection could help me to see 12+ PSI. Remember that the cooler is a top mount in the rear.
Today without the wet cloth I was only seeing 10PSI. I thought that cooling the intercooler with the cloth was helping me to see the extra boost. I am a little confused. Perhaps the cloth did nothing!?
I believe it is some sort of intake problem.
I am running an Apexi power filter going into a 3 inch pipe going into the stock 2 1/4 inch pipe and onwards through the AFM.
But as jbrough said how would injected water increase the boost? It probably wouldnt now that I think about it.
I need to do some more research regarding the Water injection. I also need to look into other people AW11 GZE + 175mm setups Thanks for the replies.
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Location:
newcastle
Registered:
June 2002
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Re: Intercooler Water Injection
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Thu, 13 May 2004 11:52
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Actually water injection into supercharged motors is a match made in heaven .
firstly you need a good water injection setup i would suggest the zoom kit .
then you need to make your water mix.... yep mix
the brew i ran in my 1ggze wa 50% water 45% methanol and 5% water soluable aroumatic oil. yep like the oils used in bath oils . i used sanledwood oil .
(this is also why my skin is so soft and i have that healthy glow .... :roll:yeah i know im not funny )
seriously though the water acts as a detonation deterent the methanol burns to improve octane levels and slow burn rate . the aroumatic oils act as a rotor sealing agent and actually can increase boost .
in the 1ggze i saw 1-2 psi more boost no detonation more power and was able to advance timing 5 degrees (at the crank angle) with still no detonation .overall power increase was 20 honest H.p at wheels but the midrange was awesome
make sure you ALWAYS inject water as far away from the throttle body as possible ...even in the airbox .BUT DO NOT run water through the airflow meter .
i would also buy an auto speed water spray kit for intercooler . this made a reasonable difference to the cressida
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Location:
Newcastle
Registered:
June 2002
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Re: Intercooler Water Injection
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Fri, 14 May 2004 05:33
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thanks mate. Sounds like fun! Now I wanna try it out! I will look into one of these zoom kits...
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Location:
Newcastle
Registered:
June 2002
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Re: Intercooler Water Injection
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Fri, 14 May 2004 06:56
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Hey mate Ive been searching for 1 of these Zoom kits on google to no avail. Who sells them? Website?
cheers
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Location:
On your mum!
Registered:
May 2002
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Re: Intercooler Water Injection
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Fri, 14 May 2004 09:28
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The main point to follow that cleicamad has written is (IMHO) that he ran the *fine spray* through the supercharger, helping to close the tolerances between the compressor lobes (or screws) and the body of the supercharger whilst increasing the adiabatic efficiency of the supercharger.
Emphasis on fine. The increased surface area of the water enhances it's tendency to evaporate - this is how it will best remove heat from the system.
I like sandalwood celicamad - I would have also burned some incense and chilled the overall mood in the garage (alcohol, water and aromatic oils).
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Location:
newcastle
Registered:
June 2002
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