The Austin 1800 range was expanded in 1972 when a 2.2 L six-cylinder version of the BMC E-Series engine was installed transversely. The Austin and Morris models were called 2200 and the Wolseley version was called the Wolseley Six. Although this engine was originally designed by BMC in the 1960s it was British Leyland who completed the planned upgrade to the 1800 range when they fitted this motor. This motor then went on to be used in the same configuration on the Princess which superseded the 1800 in 1975. This motor was designed to be as short as possible so the six-cylinder would fit transversely, no water bores were between cylinders and the cylinders were too close together to allow boring; the only way to gain extra capacity was by lengthening the stroke.