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    M8 Oil Pump Upgrade

    Before we get to the M8 oil pump and S&S cam, there are two crucial things that need to be addressed. First, it is vitally important to measure the crankshaft run-out. A dial indicator is needed to take this measurement. For 2007 and later Harley Davidsons, the run-out should not exceed .012″. Twelve thousandths is…

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