15/11/2025
Mike Hall, former director of Cosworth, dedicated many of his attributes to the development of the 4-cylinder BDA, which was based on Ford's robust Kent block. It was fitted with a multi valve head and became the UK's first toothed belt drive engine. Something equivalent to the Lampredi armed in the Fiat 131, Lancia Delta and many other models. This is how the initials of its name BDA (Belt Drive A Series) were defined.
This block offered an exceptional compression ratio, and was not surpassed by any other equivalent technology for several years. Even today they are difficult to overcome. Initially it was born as a 1.6, although in later versions it was presented in 1.7 and 1.8 liter format.
1970 brought with it an evolution called BDB, destined for the Ford Es**rt RS1600. The following variants BDD, BDE and BDF were used for Formula racing.
Later, in the 1980s, the BDT version would appear, which although initially destined for the Group B Es**rt RS1700T, when the project was canceled for being too obsolete, the entire engine batch was destined for the new Ford RS200 Group B chassis, born under the new precepts of the category, such as 4WD. Even Brian Hart presented a 2.1 liter evolution called BDT-E, destined for the RS200 Evo, although the cancellation of the category prevented this technology from being enjoyed.
The BDA, in its translation of the Capri Turbo Group 5, developed 600 cv in just a 1.7 liter version.
📸Unknow.
________________________________________