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A PLATEFUL OF HOLES ...
Mark's 'bench grinder machined' valve plate at the bottom, with the fuel port assembly, built up out of hardware store plumbing parts, bolted to the center. The ring of nine holes in the plate lets air/fuel mixture into the combustion zone when suction opens the thin spring steel petal valves [see bottom view, next photo]. Photo Copyright 2003 Mark 'Thixis' |