Water injection

[fstbusa]

fstbusa,

What is your basis that turbo's don't "like" water injection? It is quite the contrary (assuming you don't inject pre-turbo). As the water cools the intake, the engine, and then the EGT's, it also helps cool the turbo from the inside out since the EGT's are lower.

You also claim that water injection will cause a loss of power, which is then made up when you increase your boost. I can only assume you are thinking that the water replaces oxygen and therefore you will lose power. I agree with that, however, since water can not be compressed, your compression increases (the squeeze in "suck, squeeze, bang, blow), which will compensate for the very minute loss of oxygen.

Let me know your opinion.

Thanks,

Greg

Thanks,

Greg

sorry forgot to include turbo's don't like water if you if inject into the compressor wheel. The water will erode the wheel. If you inject after the compressor housing, no problem.

I don't count increaing your boost. Some people use water to increase boost while others as myself use it as a safety barrier.

I also have dyno experience that water cost by bike about 3-5 hp. No biggie but I've seen it first hand.



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[Uncle Bob]

Why put water injection on a bike and then run the system at the same boost, which was running fine without the water injection? I guess I can see having safety margin on top of safety margin, but at some point you have to wonder if just turning down the boost and leaving off the blingbling wouldn't have been easier on the wallet if nothing else to get the same result.

I'll be running water injection on my drag bike, and I have intercoolers on my street bike. The intercoolers are bulky, heavy and protruding, but there is definitely a difference with them, and more important to me is the safety *for varying ambient temps* is a big plus. I don't know if I'd do it again, on the next system I make.....

The water injection on the drag bike is 100% to get every ounce of boost out of the motor without blowing it up (and I'll probably do that a couple times too)

 

[fstbusa]

Why put water injection on a bike and then run the system at the same boost, which was running fine without the water injection? I guess I can see having safety margin on top of safety margin, but at some point you have to wonder if just turning down the boost and leaving off the blingbling wouldn't have been easier on the wallet if nothing else to get the same result.

I'll be running water injection on my drag bike, and I have intercoolers on my street bike. The intercoolers are bulky, heavy and protruding, but there is definitely a difference with them, and more important to me is the safety *for varying ambient temps* is a big plus. I don't know if I'd do it again, on the next system I make.....

The water injection on the drag bike is 100% to get every ounce of boost out of the motor without blowing it up (and I'll probably do that a couple times too)

because its safe enough to run 6lbs on a stock motor. Can be safe running 7.5lbs on a stock motor on pump gas if you don't do some big top end runs.

I run 7.5lbs and water so I can run pump gas 100% of the time and don't have to worry about detnation if I decide to grab a load of throttle a few times during a ride.

 

[bacharles]

GREAT INFO GUYS!!! I'm gettin' closer to that turbo... I can feel my right wrist gettin' that twitch.