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Water Injection Systems

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big time

03-06-2002 10:59:27

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Does anyone have experience setting up water injection systems on the super farm and pro stock tractors? How much water is needed at 3000 RPM with about 500 cid? Also, how much pressure would I need to inject it correctly? Thanks for the help.

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cody folkvord

08-05-2002 21:07:06

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Re: Water Injection Systems in reply to big time, 03-06-2002 10:59:27

I have a 81 z28 camaro that is not supercharged or turbo charged and i have heard a little about water injection. I was just wondereing if it would be practible to look into water injection for my car. Please let me know. thanks

cody

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Ron

03-07-2002 07:22:58

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Re: Water Injection Systems in reply to big time, 03-06-2002 10:59:27

The old "GP"'s used water injection..!!! They used water right out of the cooling system.!!

Question:...Why not just use Nitros Oxide...???

THEN you can make some REAL Power.!!

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G Taylor

03-06-2002 20:06:08

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Re: Water Injection Systems in reply to big time, 03-06-2002 10:59:27

The correct amount of water limits combustion temps by absorbing heat to prevent metalurgical failure when extreme amounts of air/fuel is crammed into the combustion chamber. As previously pointed out the expansion into steam recovers any loss of pressure/power. Does a nice steam clean lifting soot out at the same time. Will erode exhaust turbine blades under extended operation.

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questions

03-06-2002 19:34:51

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Re: Water Injection Systems in reply to big time, 03-06-2002 10:59:27

What does the water do?? Does it gain you a lot more hp??
thanks John

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answers

03-06-2002 19:44:41

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Re: Re: Water Injection Systems in reply to questions, 03-06-2002 19:34:51

The Water in injected on the discharge side of the turbo. The water expands 1643 times when it jumps into steam while absorbing a whole lot of heat. The water goes in, steam comes out, goes back into the turbo to whirl the turbo over to make more boost to absorb more water to make more steam, get the picture. To hear a super take off I believe it would be an exponential equations.

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pullr

03-06-2002 14:22:13

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Re: Water Injection Systems in reply to big time, 03-06-2002 10:59:27

I run 12 ounces with 30 lb pressure at 4200 rpm

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Jason

03-06-2002 22:05:20

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Re: Re: Water Injection Systems in reply to pullr, 03-06-2002 14:22:13

What kind of pump do you use and how do you adjust the flow and psi. When do you turn it on, is it controlled by boost psi? Thanks.

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pullr

03-07-2002 10:36:10

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Re: Re: Re: Water Injection Systems in reply to Jason, 03-06-2002 22:05:20

some guys use boost controlled pumps but I use just a 12 volt applicator pump that flows about 2 gallon/minute. I switch nozzle ends to adjust the amount of water used in 12 seconds which is ususally a normal pass down the track. I like to be able to turn the water on and off manually. thats why i went with that type of pump. I usually turn it on about 50-75 ft down the track.

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Dan

03-07-2002 12:18:08

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Re: Re: Re: Re: Water Injection Systems in reply to pullr, 03-07-2002 10:36:10

Where do you inject the water, the intake manifold or do you inject on the intake of the turbo. Is it possible to inject in the air intake of the turbo?

Thanks for any info.

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minnimo70

03-07-2002 13:55:20

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Re: Re: Re: Re: Re: Water Injection Systems in reply to Dan, 03-07-2002 12:18:08

From what i have heard from pro and super stockers you should inject the water into the intake manifold after the turbo. The best case cenario is to have a water injector for each intake port to insure equal water to all cylinders. From what I have heard about injecting into the intake side of the turbo is that it is like throwing tiny rocks at the turbo impeller and that it can damage it. It also slows the turbo down because the impeller is hitting the dropplets of water. Think of this for a example, If you throw water at a running fan it just splashes out onto the sides of the housing and trickles down, it doesent mix with the air well. Granteda turbo spins much faster but I believe it has the same effect.

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baystatebinder

03-07-2002 16:48:55

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Re: Re: Re: Re: Re: Re: Water Injection Systems in reply to minnimo70, 03-07-2002 13:55:20

Can you put water injection in and not have anybody know your doing it. Can you considerably more hp with water than without it.

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Dan

03-07-2002 18:20:17

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Re: Re: Re: Re: Re: Re: Re: Water Injection Systems in reply to baystatebinder, 03-07-2002 16:48:55

I was going to hide the water injection inside the air filter box and pump the water through the turbo. I don't know if thats a good idea or even if it would help at all. Just my thoughts.

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pullr

03-08-2002 16:48:17

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Re: Re: Re: Re: Re: Re: Re: Re: Water Injection Systems in reply to Dan, 03-07-2002 18:20:17

that would work. i inject mine in the turbo inlet and like some of these guys said it will cut the horsepower a lil. if i start at the line with it on i can notice it but i usually turn it on between 50-75 foot and cant tell any change in rpms. i usually shut it back off towards the end of the pull or when i notice the rpms dropping. the water drops the rpms quicker than normal at the end

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G Taylor

03-08-2002 17:06:33

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Re: Re: Re: Re: Re: Re: Re: Re: Re: Water Injection Systems in reply to pullr, 03-08-2002 16:48:17

While spraying into the turbo may improve distribution with a single nozzle system, there will be more cooling per lb of water if the water is injected at the turbo outlet. Properly spaced the distribution should be as good. Flow & pressure control can be maintained easier if manifold pressure is vented into the water supply tank to equalize pressure.

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