Making a 13600 horsepower Diesel Engine

https://youtu.be/w4uMX5mWAF4

11:29 the crankcase takes two full weeks to cool down after casting before it's removed from its mold. 

16:58 to clean the molding sand off, millions of 2.5mm steel pellets are fired at the casting at 200 kmph (130mph) - this also helps to harden the steel. 

27:12 each piston-connecting-rod combo (a "power unit") weighs 750kg (1600lb.)

48:25 it will operate for up to 35 years, maintenance-free.