One of the best-known advantages of V12 engines is their smoothness. However, what's not so well-known is why exactly they are so smooth - can you guess?
Answer They are symmetrical
The main reason behind the smoothness and the linear power delivery of V12 engines is rather simple. Just like straight-six engines, V12s are symmetrical in their operation - when a piston in one of the cylinder goes up, the piston on the opposing cylinder goes down. This means that both straight-sixes and V12s perfect engine balance and almost no vibration if tuned properly.
Asked by Vasilii Kulev · Last updated 5 years ago · 245 views · SOURCE