epion2985

btw a ceramic turbine will spool faster then a steal one. It is much lighter. Same reason why small turbos spool faster then big once. Is my reasoning correct?





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also I have been reading up on water injection, and uperently it does wonders for people:



http://www.homemadeturbo.com/forum/index.p...id=4257;start=0



also someone there did some tests for us and:





I must say this is quite impressive. Did I mention this cost $80!! The only "expensive" components were the pump and the nozle, both at under 80$. For this kind of result, this really a worthy upgrade.



There are poepe on http://www.homemadeturbo.com who run at over 1000+ hp and are VERY pleased with water injection.



There is also has been experementation with injecting water directly in to the turbo. Test show that as long as the water is atomized in to a fine mist before it enters the turbo, the blades take no wear and preformance soars.

epion2985

some great links:



http://home.ccci.org/Key_Information/2ndWa...erInjection.htm



http://www.dawesdevices.com/howto.html



http://www.510again.com/articles/watering/...g/watering.html

epion2985

1. Water injection increases the mass of air/fuel mixture entering the cylinders, because it cools the hot air from the turbo's compressor. As the water droplets hit the compressor wheel going 100,000 rpm or so, a mist of amazingly small droplets is formed. These have such an incredibly large surface area compared to their volume that they evaporate (change to vapor) almost instantly, absorbing a tremendous amount of heat from the air-fuel mixture just before it is compressed and lit. The cooler mixture is denser, so for a given boost pressure, there will be more fuel and oxygen in the cylinder when the intake valve closes.



2. Water injection allows a higher intake manifold pressure before the detonation limit. The torque your engine produces is closely related to manifold pressure. Double the pressure, and at any given RPM, power will be approximately double. This applies only when the pressure is measured as "absolute" rather than the common "gauge" pressure. There are a number of ways to define absolute pressure, the most appropriate for turbos being "Bar". On the Bar scale, 0 is a vacuum, 1 is standard sea-level air pressure, and so on. A naturally-aspirated (non-supercharged or turbocharged) 510 will almost get 1 Bar at the peek torque RPM, while a turbocharged 510 can often exceed 2 Bars with water injection. This corresponds to about 15 PSI boost. Joe Keller of Whittier, CA, has exceeded 3 bars on his very trick L16. This represents about the limit for a single-stage turbo, and required 6:1 compression, aviation gas, and water injection.



By Member David Lewis

(www.510again.com)

Silver Ninety Three

If you do a twin turbo setup, you would have only half the exhaust volume available to spin each turbo versus all for just one. From what I've seen, these setups are a ton more expensive and spool slower than a properly sized single.

epion2985

hm I just realized this isnt the place for this, too big of a topic. Just ignore this here,I will make a new thread for it. There should be a sticky on it anyway.

9Second7

Im not too familiar with water injection and this may be a dumb *** question, but do you have to have like a separate tank filled with water for this water injection system to operate in your car ???

epion2985

like I said there is a seperate thread for it now read it, it explains it very well.

GarageBoy

Water Injection has been around for a while. Vosko, among others use it

FrestyleFC3S

dude .. if u really tihnk a single setup is more expensive than an aftermarket twin...you need some help...

qwester007

Water Injection can be great- In very few applications. It's similar to NOS. It works wonderful if you tune it correctly and run it at the dragstrip, however- IMO it's useless on the track and an extra PITA on the street.