if you insist, here is quite an interesting sample 
auto-translated captions are OK-ish actually, interesting stuff happens minute 7 and later
they disassemble VW’ 1.4 turbo engine, one of the most popular ones in Russia apparently and this is “usual” repair for them as they get such engines in their shop a lot and they observe one of two “usual” failures - either high oil consumption or (like on this video) - the piston disintegration after oil deposits raise compression to the point of detonation and eventual failure. their “usual” fix is to install the forged pistons with slightly reduced compression ratio, so that problem never reoccurs. sometimes cylinder walls get damaged and their install cast-iron sleeve, but on this particular engine it was not a single scuff present, even with pieces of piston and ring chewed and spitted down to oil pan