Cudafever
I agree that,when theyre banged out and pounding steel to steel its a very obvious sound. But when theres only excessive oil clearance, and all the babbet is still on there, the knock might be heavily muted.And the hollow tone to the sound IMO points very strongly to the oilpan as a source.And theres only one thing in the pan that could make that tone, and continue for this amount of time.
Sure Im speculating.But the first couple of times I threw a rod bearing, this is how it presented at first. And I ignored it through ignorance. Next time out,It was obvious.
And besides it only takes a couple of hours to RnR the pan and look/check/replace the bearings. The peace of mind alone would be worth it to me.
Anyone else?