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Old 10-10-2010, 05:53 AM   #1 (permalink)
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Exhaust Water Injection

Hello, I've been researching into injecting water into the exhaust post turbo and the theory looks promising. However, the math to calculate how much water to inject does not seem to exist. I have scoured the web and come up with some components but they are ideal gas laws without the inclusion of water vapour and formulas for water vapour but I haven't a clue as to how to calculate the data in a meaningful graph. Is there anyone here that has the fluid/thermo dynamic skills to find an injector size @ 50psi pump pressure? I was reffered here by dust at devils own wi. He mentioned someone here may have some knowledge on this.


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Old 10-15-2010, 11:10 AM   #2 (permalink)
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How would that make power? On our 2 stroke jet skis we would spray water into to exhuast pipe to change the power band. But spraying water after the turbo into the exhuast I would think would not do anything
87 T, 60's, TT chip, 2 1/2 MagnaFlow exhuast, CAS V4 & Alky. Installing new engine now- stock block/ 212-212 roller/ ported heads/ 6262... Original owner!
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Old 10-18-2010, 03:04 PM   #3 (permalink)
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Water injection in exhaust to reduce backpressure - waterinjection.info
86 Rx-7 GXL Hybrid 86 Grand National motor. (9:1) TRW pistons, Webber ported IRONS, Turbo Tweak E85chip,Translator plus,PT68 turbo,CPT 9" Competition converter, Powerglide, 83lb inj's, Magna Flow 650HP fuel pump, 218/218 flat tapp. cam, 10mm Race Wires, Adj. FP Regulator,RJC PP ,FMIC 18x32 spearco bar&plate, Custom 3 inch mandrel DP, postons X-over pipe. deltagate WG, 3.27 gears, WB 02, 26"x9 slicks,

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