The Aston Martin DB2 is a grand tourer that was sold by Aston Martin from May 1950 until April 1953. The successor to the 2-Litre Sports model, it had a comparatively advanced dual overhead cam 2.6 L Lagonda straight-6 engine in place of the previous overhead valve engine straight-four engine. It was available as a closed, 2-seater coupé which Aston Martin called a sports saloon, and later also as a drophead coupé, which accounted for a quarter of the model's total sales. The closed version had some success in racing.
Development and racing
In 1947 David Brown bought the Aston Martin and Lagonda companies and incorporated them as Aston Martin Lagonda Ltd. Lagonda's 2.6 L (2580 cc/157 in3), dual overhead cam, straight-six engine, more powerful than the pushrod 2.0 L straight-four in the Aston Martin 2-Litre Sports, was the main objective in Brown's acquisition of the company. W. O. Bentley had supervised the engine's design, which was largely by William (Willie) Watson, an engineer with the pre-war Invicta company who had collaborated on Lagonda's pre-war V12 and also designed the short-lived post-war version.
In its original form the Lagonda straight-6 had a 78 mm (3.07 in) bore and 90 mm (3.543 in) stroke, and produced about 105 hp (78 kW) with dual