Thread: Engine Knock

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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.