Ideas on what's causing my click/tick/rattle noise?

halfafish said

The pistons, rings, and lands are all good and have been cleaned up. The block got a quick kiss with the hone and we are one step closer to assemly.

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Can You post a pic of the piston tops, particularly the cyl. that had the most rod brg. damage? If detonation was the cause, there should be pitting in the crowns to witness that,.... any?