I recently came into possession of a b&s 6.5 ohv motor with a pressure washer. I would like to use this engine for a upcoming project, and use a predator for the pressure washer if I need it. So I was wondering, if anybody knew of any good places to get hop up parts for it (if any) and what rpm these engines (fly wheel, rod, etc...)are safe to rev to as stock. Any input would be appreciated.