And again to show the other side
Note the inlet track, ii gives the air flow a somewhat vertical path, bucket/shim cam over valve actuation and that the angle between the valves is narrow to give a tight combustion chamber. It is very similar to Cosworth’s tried and true efforts (Honda too picked up on the same basics completely independently of Cosworth at the same time in history - Cosworth tthough for open wheelers and Honda for motorbikes. The history of how we got to this design is well documented in this really well written book, Classic Motorcycle Race Engines: Expert Technical Analysis of the World’s Great Power Units – January 1, 2013
by Kevin Cameron)
Nissan SR20 high port for comparision
Toyota 4AGE
