History of the Berkeley Sport SE492
In late 1957, the Berkeley Sport SE492, with a 30 horsepower Excelsior three-cylinder 492 cc engine and triple carburettors was introduced. This engine configuration was produced by the Excelsior engine's vertically split crankcase with modular crankshaft and barrels, which made adding a central cylinder fairly simple. A four-speed transmission was made standard, and it managed a top speed of 80 mph.
Production lasted from October 1957 until March 1959, with chassis numbers ranging from 1 to 666. They were dubbed the 'Twosome' from October 1958, to match with the launch of the Berkeley 'Foursome'. The SE492 achieved some success in motorsport, and Giovanni Lurani purchased three of them to take to Italy. He fitted them with his own hardtop design and raced them in the 750 cc GT class, with one winning the 1958 Monza 12 hour event!