03-19-2005, 11:19 AM
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#3
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Naturally Aspirated
Join Date: Jan 2003
Location: New Jersey
My Ride: 86 SC & 98 Neon
1/4: 9.900
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In order to spray the alcohol, you need more pressure than the boost in the intake. Lets say you have 15psi boost, your pump will need to make 15 pounds plus whatever it takes to spray the alcohol. To try your washer pump out, hook the output to a pressure guage and see what it can do. My guess is that you will need at least 50 PSI for 15PSI boost, 60 for 25PSI boost. Of course, the more pressure the better and make sure it can also deliver pressure while flowing.
Currently I'm using a stock T1 Fuel pump, dropped inside the alcohol canister. It is connected to 4 misting nozzles (from Mcmaster Carr), 1 in each runner. Seems to work OK, I run pump gas and the alcohol and have no problems at 25PSI boost (low compression setup 7.3 to 1).
Carl
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