dan25man

Fascinating video. Really gets into the meat and potatoes of engine design. It is interesting that Toyota changed the main bearing material from resin to metal. I'd assume all the bearing surfaces from LS400 up were metal bearing caps, but I guess the 4.6L engines has a resin coating.


Here's the SAE paper detailing the changes to improve power and efficiency.
https://www.sae.org/publications/tec.../2018-01-0366/