Guess that noise

512Stroker said

With the "rest of the bearings look good" your HV oil pump did not suck the pan dry and cause the failure.
Were the rods resized properly by a engine machinist prior to reassembly?
Did you measure the bearing clearance for all 8 rods during assemble?

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This was my first engine build from start to finish. I didn't have high expectations. I only checked a couple rods/mains but they were all the same. Ring gap was at .020 (also only checked a couple) The crank was from one engine, rods and pistons from another, nothing balanced. Block has ate 5 sets of rods/mains. The fact that in ran at all was a surprise.

Thanks for clarifying that it wasn't the oil pump.