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Originally Posted by rocketman
I would like to know what someone is doing to a motor to break the oil pump casting.
Anyway you want to be using the new 1055X part # pumps,there the Melling performance series of pumps from those that don't know.10552 is the most popular.
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dirt circle track racing comes to mind, with rough tracks, and the occasional wreck, that could put a serious jolt to the oil pump. I haven't had one break yet, but you can bet that the oil pan wil be coming off of all our motors to check the wich oil pump we have. It doesn't take long to destroy alot of parts at 8000rpm's for 3/8 to 1/2 mile track.