Originally Posted by
ajamesc
The yb is a 20 odd year old engine that is still pushing the boundaries of what a 4cylinder turbo engine can do! I dont think u can realy compare any other 4cylinder turbo engine to it when 500bhp is the norm and poeple like mark sheed are able to get over 800bhp! In all fairness even the jap 6 cylinders can struggle to compare with them to a certain degree!
Depends a bit... a "4 cyl turbo engine" not to ignore is a Volvo redblock fitted with a 16V head and a turbo. 2.5 strokers are way over 1000 hp now... But the YB is no bad engine, neither so the SR20DET, built both.