Re: Mystery Engine Knock
Chris,
It seems like you may have found your problem. You may be able to use a borescope to see if the dippers are reaching far enough into the tray. You can knock the breather tube out of the engine. It is a tight fit.
It is normal to have 1/8 inch front to back clearance between the big end rod bearings and the rod journals. A bent rod will push the big end of the rod back and forth and bang into the journal shoulders. The geometry is not obvious. A straight rod will just stay in one place even with the clearance. The only reference I could find that mentioned the back and forth movement of the rod if bent is https://www.mtfca.com/discus/message...tml?1500638368.
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