gingerfold:
Masked inlet valves and toroidal cavity pistons. I’ve always been led to believe that these design features were fundamental to the very good starting characteristics of AEC engines, even in the coldest weather.
The chamber was really introduced to reduce piston rock and promote the flame to burn in the centre of the piston directly over the conrod.The masked valve idea was/is a success.Even todays car diesels use the basic idea in the form of swirl flaps and nowhere as reliable as the AEC idea.
Does anybody have a coolant flow diagram of a 740/800 as I,d be interested to see it.