Using Chilled water for Injection

[TurboGTi]

has anyone tried using chilled water in there WI system?
By chilled i mean water at or around 0 degrees C ?

Would this have any adverse effects on power gain?

what are your experience?

[SMoLiK]

I am curious about his myself... I am considering adding a cooler (oil or tranny cooler that is the right size) to a water kit to cool down the temps...

SMo'

[hotrod]

I'm not aware of anyone that has done any comparison testing. It would probably make a small but noticable difference if you were going for every possible advantage. The evaporation process will typically drop intake temps somewhere between 20 deg F - 40 deg F depending on the outside humidity. In high humidity tropical environments obviously you would be on the lower end of that range for evaporative cooling.

I have tried putting Ice cubes in my top mount intercooler sprayer reservoir at the drag strip. It made a small difference but the cool water quickly warmed up in the lines so it was not really useful on a day to day basis.

If your at the drag strip and need a few hundreths of a second it would probably be most practical to drop ice cubes in the reservior and then have some sort of insulation on the feed lines and a way to spray some water to purge the warm water out of the lines.

To get 1% increase in engine power you need to drop intake temps by about 11 deg F, so I would be surprised if you could get more than 1% - 1/2% or the engines max power, maybe 2 -3 hp.

Larry

[TurboGTi]

well i was more thinking along the lines of dry ice dropped in the reservoir to cool down the water temp.

i'm going to try this and see what happens ..... my alternator is burnt so i won't be doing this right now but i'll keep u posted...
or maybe someone else can try it too!

[pan_matt]

Build a double wall fluid container from stainless steel, with the water resevoir in the center. In the outer resevoir you can place dry ice to cool down the liquid.

Works very well

[TurboGTi]

Originally Posted by pan_matt

Build a double wall fluid container from stainless steel, with the water resevoir in the center. In the outer resevoir you can place dry ice to cool down the liquid.

Works very well

Thats a good idea i would love to place a nice aluminum tank in the back for water but this would make my tank lower than the pump... hmmm maybe i could use a regular window washer pump to prime the aquamist pump..!
hmmm i'll look into this!

[Charged Performance]

The STi has a water spray tank with a level switch and washer type pump. It works very well in priming. Even this small pre-pressure will also increase significantly the flow potential of the piston pump design of the Aquamist pump.

If you are willing to do a tank in this manner I would research some for a large washer resevoir that has a built in pump and level sensor and designed in a way that will keep the intake covered during turns.

[TurboGTi]

yea thats what i was thinking of Charged..
?I''m still looking into this..!
I still haven't tried the chilled water as yet ....! but when i do i'll post!

[Charged Performance]

If I come across a make/model car that has an ideal washer resevoir design for a trunk mounted tank with a built in pump for priming I will certainly post it up. What we need is a junk yard specialist or a real all make/model trivia junkie to identify a good candidate!

[hotrod]

I snag little snippits of information I find interesting out of things I see on the web, and one of them is the following comment about a reservoir suitable for water injection.

On the 1995 Mitsubishi Eclipse GSX, the windshield wiper reservoir is in
the trunk under the spare tire.
It supposedly already has a level sensor.

Another candidate I've heard mentioned was the:

Saab 900 windscreen washer tank, on european models ( not sure if US models had the same).

I have not seen either one, but if someone has an opportunity to get a picture of one, and some dimensions, or drift down to an auto wrecking yard, it might be just what the doctor ordered.

Did a little searching, and found this web page that sort of serves as a list of candidates to investigate.

http://www.auto-electrical-parts.com...sor-parts.html

Larry