Chassis #1614
1955 Moretti 750S MM bialbero Spyder, Chassis no. 1614, Engine no. 1617
Extract from Bonhams sale description
This car, which is fitted with Moretti-built barchetta bodywork, is powered by Moretti’s remarkable twin cam 750cc engine which it is believed was designed by a moonlighting Maserati engineer, possibly Alberto Massimino, as it bears similarities to prewar Maserati racing engines. These include the cast-iron block and head with a valves inclined at a 90 degree included angle in hemispherical combustion chambers and finger type cam-followers, and a crankcase in which the main bearings are carried in split ‘cheeses’, an extremely strong construction also used by the single cam Morettis. While normal Moretti coupes and convertibles used a fabricated steel platform frame, the Gran Sport chassis was an extremely strong welded structure of rectangular steel tubes made by Gilco, who also made frames for Ferrari, Maserati and OSCA. Front suspension was by superimposed quarter-elliptic springs forming a parallel arm assembly while trailing quarter-elliptics were used at the rear.
