Towards the end of World War II, W. O. Bentley began working on a new straight-six engine for the Lagonda marque.
Bentley had completed his obligatory three years term with former rival Rolls-Royce following their 1931 acquisition of his former business.
Bentley and his team developed a modern dual overhead cam straight-six engine.
Power eventually reached 195 hp the (145 kW) with triple twin-choke Weber carburettors in the "DBB"-spec DB Mark III after a Tadek Marek substantial redesign, but the engine by then was showing its age.
William "Willie" Watson http://www.automotivemasterpieces.com/william-willie-watson.html Tadek Marek engine redesign DB3 History: Racing with the David Brown Aston Martin's by John Wyer ISBN 0-85184-036-1