Originally posted by hanleyclifford
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This response is based on what I think, not what I know.
I'd say any pressure capable of filling the carb bowl will do as long as it keeps up with your consumption. At slightly less than a gallon an hour it isn't much. Since the pressure reduction is past the tank draw and filter I think you're over the hump where pressure (or vacuum) is needed. A polishing filter could be an issue though.
I've been working with another listmate on an automatic fuel bypass system (concept complete, parts purchased but not yet installed) that is expected to drop the pressure at the carb to 1 psi. We will see how it works and post the results.
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