SaabGuy

This would surely save a motor running high boost. Is there a way? This thread can get a little interesting if people know what I am talking about. We can chuck the stock intercooler if this setup can work.

Someone explain the Sub-Zero system to me please?? Does it really inject antifreze into the combustion chamber?????

Can you say, no cats and possibly able to pass emmisions?? or am I thinking the opposite direction?

Node

iTrader: (1)

what would be the point of injecting anti-freeze into the combustion chamber?

If you're talking about a below ambient temperature water injection system, it's onyl really ideal for drag racers and other short races. For daily driving and road racing you couldn't keep below ambient long enough, then you would be intercoolerless and have ambient or higher temperature water injection.

I'm still confused as to what you mean.

hypntyz7

Funny you mention that, about an hour ago, during preparation for an engine swap(87 auto) I was fooling with the old subzero bottle that I usually chuck in the backyard. Ive been wanting to convert one to atf injection, for flooding situations, or when need for a smokescreen arises :-)
The plug is already there, all you need to do is cut it off the harnes and run your own wires to a toggle switch. ITs a simple positive/ground dc motor, just like an rc car. I tried it and it will pump water or atf well.

For water injection it wouldnt be very good(for constant running anyway), because its such a small container and pumps fairly quick when its on. Take yours off and straightwire it, and watch how much comes out(you have to replace the small hose at the bottom, else the valve on top will not let anything out until its real cold). I think it would work great for flooding situatons though. Get in, car wont start, flip a switch for 2 econds, wait 30 seconds, start and drive off, leaving a cloud of smoke behind. Wouldnt even hae to modify a single line on the engine if it works how I think it will.

THe only way constant water injection could work would be either in conjunction with a voltag limiting device(put a pentiometer on it, and turn the voltage down to 2-3 or something, to kep the flow very low) or else some kind of boost dependent or rpm dependent trigger device like an msd pill, which I wonder if it'd be worth fooling with. I plan to pursue the atf pump idea, so stay tuned. Any further ideas?

defylogik

a friend of mine toyed with this idea, but he was going to run water sprayers off of his regular windshield wiper bottle. he was going to mount the sprayers in front of his front mount and have the water spray out at the intercooler when he pressed the button.. this would keep the intercooler WAAAAAY cool..

sm

SaabGuy

Node; I know its hard to believe, but the subzero fluid is 90% antifreeze and 10% water. I guess it injects the fluid into the engine when temperatures are below like -18C (like -10F) and makes for easier starting??? Basically it is useless for where I live. Water injection slows down the combustion prosccess and lowers ambient temps far better than an intercooler and reduced knock I guess. Ive seen 26 psi turbo cars at the drag strips running no intercoolers, only water injection.

Good ideas on using the system for other applications. I guess it wouldnt hurt to push a little ATF now and then, maybe we can also use this for the ATF trick? How bout some fogging oil to fool undoughting ANTI-Rotary engine believers??

Water injection would also be awsome for high boost applications, unfortunatly the bottle is too small and I would not really trust that cheesy little motor for saving my engine.


Anybody know anything about what the injector looks like??? Does it spray or stream? Does it just trickle? Can it push atf fluid through the little tiny injector??

fastrotaries

Hey some of you should check out my thread on the single turbo page.

A properly installed W/I system would be on all the time. so you should never let the bottle go dry. Your timing would have to be advanced by a few degrees, depending on how much water you would use. Also because of the high boost....In order for the water to regulate itself at a constant pressure ( which is needed for proper mixture and atomization) you need a HIGH psi pump. One that pumps at least 3X the volumetric pressure in the intake tract. IF NOT then the pressure inside the pipe wouldn't let the water in. Unless you ran the water system on a vacuum system. ( much like chlorine fed at a pool or water plant.) But vacuum systems are much more likely to develope leaks. Spearco offers a system for about $200 and i think it would be a great addition to the stock I/C. It's far cheaper than running a front mount. Plus your gas mileage also goes up.

ReZ311

iTrader: (4)

I agree 100%

87GTR

iTrader: (61)

I use the bottle to hold water to spray on the FMIC but its too small
and dont last long for road racing.

so Im going to get a differnt one

tweaked

iTrader: (4)

water injection is a funny thing too much and you loose power. not enought and it is ineffective. Edlebrock maks a good one that isn't very expensive but you could use the bottle.
The water has to atomize like fuel.
and you don't want to loose the IC because it helps alot. the water injection will reduce intake temps but it's main porpose is to stop detonation under high boost, NOS, compression. or really high advance. it takes a computer to control it, not a "taco" switch.