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Forum: General Q & A

07-20-2013, 07:46 AM

Replies: 21

High hour 502mpi mags still running good ??

Views: 5,257

Posted By vintage chromoly

Are you guys gettin these hours out of the 502's...

Are you guys gettin these hours out of the 502's with the original valve springs?

Is the often read "you have to do valve springs at 200 hours" language bogus?

Also, I've read stuff about a...

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