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    Hercules MBL motor

    "I have 1954 chris craft sport "I have 1954 chris craft sportsmen with a hercules MBL 158HP motor. The problem is a knocking problem that increases with RPM.I did a compression check all six cyl were 107 to 120PSi.The oil pressure at idle is 3-5 lb increasing to 10lb at 2,000 RPM. There is a...
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