well that doesnt mean it was bearing slapped. I mean some signs point to that, but i have seen bottom bearings destroyed and top bearings perfectly fine, and vice versa. Maybe im not understanding exactly what you are saying?
NAD auto ive always had good condition low mileage engines, but im sorry any JDM importer tells the same "30,000" mile bullshit story. The only reason why they do that is because they know there is no way to actually tell what condition the engine is. All they can do is compression test it before they yank it.
Explain to me how time goes on and the engines keep staying the same mileage they were 10 years ago? Are there just endless supplies of low mileage engines in japan? come on gimme a break.
bottom line is when you buy a used car it doesnt really matter, theres no warranty. So a kid bought a motor and he was POSSIBLY lied to or someone patched it to sell it, wouldnt be the first time, surely wont be the last. Should have had it checked out more thoroughly. Also if this guy has had the car for more than a month, its just tought luck, regardless of what happened.