cool idea w/ the fuel filter - Saab Performance Bulletin Board - Saabnet.com
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cool idea w/ the fuel filter
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Posted by Ubipa (more from Ubipa) on Wed, 13 Nov 2002 11:55:51 Share Post by Email
In Reply to: Pump cycling on and off is not a problem, Jouko Kuisma, Wed, 13 Nov 2002 11:33:07
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True, excessive cycling is not a problem w/ an accumulator, but b/c the pump you chose (8000-543-238) you have a variable pressure rating (80psi-100psi). So when your pump turns on, your system will probably be charged at 100psi and slowly work its way down to 80psi. Depending on the size of you accum, if it doesn't cycle until after coming off boost you'd have a 20% loss of flow at the end of boost at 80psi. If you have an atmospheric H20 tank w/ no inline pressure regulator, 20psi of boost will take that pressure down to 60psi (40% loss in flow). From the picture it looks like you have the aquamist programmable controller w/ valve so you can probably compensate for the losses, but w/ a fixed rate h2o inj, the pump is probably not the best.

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