Editing S.P.A. (automobile) (section)

==Cars==
[[File:SPA dell Automobile.jpg|thumb|1922 SPA 23S at Museo dell'Automobile]]
The first S.P.A.s designed by Alberto Ballacco and Ceirano were the ''28/40HP'' and ''60/70 HP'' which had four cylinder engines, [[side valves]] and [[live axle|live rear axles]]. They were exhibited at the ''Esposizione di Torino''.<ref name="Georgano">''The Complete History of the Motor Car'' by [[G.N. Georgano]]. [[Ebury Press]] 1973. pp 636</ref>

By 1907 they also produced two six-cylinder models, one of which had the [[flywheel]] mounted at the front of the crankshaft.<ref name="Georgano"/>

By 1911 they had introduced ''L-head'' [[monobloc engine]] designs, [[unitary gearbox]]es, and [[High voltage|High tension]] [[ignition magneto#High tension|magneto]] ignition systems.<ref name="Georgano"/> The next year they sold 500 cars and introduced a new four cylinder 14/16&nbsp;hp engine as the basis of their modern, compact car.<ref name="Georgano" />

By 1914 the range included twin, four and six cylinder cars - the biggest had an 11,536cc displacement.{{citation needed|date=April 2014}}

After [[World War I]] production resumed with the pre-war models; the ''14/16 HP'' using a 2.700cc side-valve engine and the '''25/30 HP'' using a 4,400cc six cylinder engine.<ref name="Georgano"/>

In 1922 the highly sophisticated 30/40 Super Sports was launched, with a 4,400cc six cylinder engine, using twin overhead camshafts ([[dohc]]) operating four valves per cylinder. The aluminium alloy cylinders had steel liners and aluminium pistons, plus dual carburettors and dual-ignition. The car was also equipped with front-wheel brakes and a V-shaped radiator.<ref name="Georgano"/> By the next year, the sporting range was marketed as ''Tipo 23'', ''Tipo 24'' and ''Tipo 25''.