Simulating an Entire Car Engine (yes, it makes noise) [video]
For engine nerds, you should check out Automation - The Car Company Tycoon Game [1]. It is basically a car builder simulator where you go through every aspect of developing a car - chassis design, suspension, engine..I spent hours tuning and building exotic engines. 6 liter turbo inline 3? 1 liter NA V12? Only your imagination is the limit.[1] https://www.youtube.com/watch?v=xQpfvliszx4Bonus: You can export your vehicles directly in BeamNG.drive and test them on the track.