There is the noise, and the pistons are worn at sides, between wrist pin spaces, in the manner of having been rubbed. This is how it looks (not my picture) :
I tried to help the situation by cutting notches in the connecting rods, to have more oil getting in the cylinder, but haven't gotten to starting the engine yet:
The slap subsides dramatically, even to point of non existence, when the car turns left fast. The engine feels smoother then, and I thought this probably has to do with a change in oil level wherein having leaned against the left of the sump it possibly gets picked up by the crank and thrown at grater extent into the cylinder, eliminating the slap. So I decided to cut the notches to have more oil come up into the cylinders.
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