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Old 05-02-2013, 09:33 AM   #51
Stan_R80/7
Beastly Gnarly
 
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Joined: May 2012
Location: VA
Oddometer: 1,123
It looks like the problem was not rod bearings. Also, 30 psi at 1100 rpm and 70 psi at 3000 rpm is good oil pressure. Are you sure the problem is not pre-detonation knocking? How do the heads and pistons look - is there a lot of carbon? Any indication that the valves are contacting the piston (or carbon on the piston)? Could this be a piston slap problem? Now is the time to address any and all of these (somewhat unlikely) causes. Could this 'knock' be timing chain slap? Good luck!
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