Thread: Engine Knock

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actually, i'm thinking more and more that it is the flexplate. time to get to work and actually look.

initial inspection of the flex plate turned up nothing. Of course it's still in the vehicle so I may have missed something. I pulled the oil pan and all the rods look ok, all are still attached and there are no noticeable stray marks on the underside of the engine, no debrie in the oil pan. I'll likely head back to the flexplate and tranny bolts. Anyone know any rough torque specs for this area? If that doesn't turn up anything I'll pull the valve covers.

on a whim I filtered the oil I just drained and I found some copper shavings/flakes. Sound like bearings? Where is there copper in this engine?

hmm... I think #1 rod bearing spun due to oil starvation possibly caused by a clog as the others look ok.

#1 and #5 rod bearing spun for sure. Initially I thought it was likely due to a clog. Now, I'm wondering if it's due to the engine's slant. It is off level with the front higher by about 5 degrees, maybe less. Could this be the reason? I'm thinking that if the oil pump is functioning properly that it should not matter, I'm just wondering.

With a pressurized oil system the 5 degrees shouldn't matter.We once lost a very expensive race engine due to pcs of lint from some shop towels clogged a oil passage.See what you can with cleaning engine brushes,but sometimes after the fact it is hard to tell if the stuff you might find is a result of the failure or the cause of it.