Bad Day, Very Bad day

dustermaniac said

That's what I thought, the bottom of the shaft is supposed to be similar to a hex head bolt and have flat sides and not be grooved as this shaft is. I am going to order another pump and shaft (a hardened one if I can get one) and tear it open and see what transpires. I do not think I did any major damage to the engine. I shut it down pretty quickly.

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Yeah, they almost look like a large allen wrench on the last couple inches.

I hope you are right and you probably are. I would still use the paint filter on the oil, and also cut the filter open.

Back when I was racing, I would pull the pan off at least once a month, just to check side clearance on the rods. If they all moved freely from side to side, I felt I was good.