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Originally Posted by Al_S14
piston slap is when there is excesive clearance around the piston ... as if piston is too small for the bore so it is slaping sides of the cylinder wall and not the head. this is common on some turbocharged engines(not factory) whose pistons make noise untill engine warms up and pistons expand.
i think you started your diagnostic process from end. shoudl have pulled the pan and checked rod bearings which is what the problem is. i have yet to see a KA which has stretched the studs enough to spin a bearing or stretch a rod(well this i never hear of period) - its almost impossible.I am certain its rod bearings that took a shit on you from from lots of miles or lack of oil.
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Thanks for the advice. This is just a spare motor for me as I am swapping in a fresh one. I can't pull the entire thing out yet, so I'm just pulling it piece by piece for now.
I'll have to see what the rod bearings look like when I get that far, but thanks.