Originally posted by dubster99
Yes they may have cleared during the rebuild, but it doesn't take much to spin a bearing and start knocking. A little speck of contaminant is enough to spin a bearing, and eventually start to knock.
We tore the bottom end back off about two weeks ago to check the oil pump, (the car hasn't ran for more than 5 minutes at a time, and more than an hour combined) and checked the bearings out as well and they were fine. The clearances were all .001" exactly like they should have been, and none of them had spun. Everything looks normal by all indications. This wasn't either of our first buildups, and we took all the usual precautions, including liberal amounts of assembly lube. It started knocking again the minute we started it up. Thanks for the suggestions though. :thumbup: