The 2JZ and RB26 are famous, but the Toyota 7M-GTE and Nissan S20, among others, prove the sheer power and depth of Japanese engineering.
One could be inclined to say that, as a whole, Japan has historically built some of the best automotive engines of all time. This isn't necessarily a hard stance; however, judging by both performance and reliability, the likes of Honda, Toyota, Nissa... [13118 chars]