200S/200SI
The 200S was fitted with the 150S's 4-cylinder engine bored out by 11 mm and stroked by 3 mm for racing in the 2.0-litre class. In this guise it produced far better torque at low to medium revs. The wheelbase started off at 2.15 metres before being stretched to 2.25 metres.
The first three cars were equipped with the rigid rear axle from the A6GCS; this was then replaced by de Dion rear suspension. The twin rear longitudinal leaf springs were swapped for a single transverse one to overcome suspect handling on the early version. The SI (for sport internazionale) version featured doors on both driver and passenger side, a full-width windscreen, wipers and a canvas top to comply with 1957 sports car regulations.
28 cars were built and most were sold to US customers for the SCCA (Sports Car Club of America) championship. In Europe the Swiss driver, Willy Daetwyler, won the 1957 hill-climb championship.
Technical data
| 0-60 mph | |
| Bodywork | aluminium-bodied barchetta-style two-seater sports car |
| Bore and stroke | 92x75 mm |
| Brakes | hydraulic drum brakes on the wheels |
| Brakes front | |
| Brakes rear | |
| Chassis | tubular space-frame |
| Compression ratio | 9.8:1 |
| Cooling system | water-cooled, centrifugal pump |
| Displacements (unitary) | |
| Dry weight | 1,477-1,455 lbs (670-660 kg) |
| Engine | in-line 4 |
| Engine weight | |
| First race | |
| Front Tyres | |
| Front suspension | helical springs, hydraulic Houdaille dampers and anti-roll bar |
| Front track | |
| Fuel & lubricant | |
| Fuel feed | naturally aspirated, two Weber 45DCO3 carburettors |
| Fuel tank | 26.40 Imp. gall. (120 litres) |
| Gear ratios | |
| Height | 38.58 in. (980 mm) |
| Ignition | twin-plug, Marelli coils or magnetos |
| Kerb weight | |
| Length | 153.54 in. (3,900 mm) |
| Length-Width-Height | |
| Lubrication | dual oil pumps (pressure and scavenge) |
| Maximum power | 140 bhp at 7,500 rpm |
| Maximum torque | |
| Model | 200S/200SI |
| One mile | |
| Production dates | 1955-1957 |
| Production start | 1955 |
| Quarter mile | |
| Rear Tyres | |
| Rear suspension | de Dion rear axle, transverse leaf spring, hydraulic Houdaille dampers and anti-roll bar |
| Rear track | |
| Reduction | |
| Steering | worm gear |
| Timing gear | two valves per cylinder, twin overhead camshafts |
| Top speed | 155 mph (250 km/h) |
| Total displacement | 1,994.3 cc |
| Transmission | 4- or 5-speed + reverse |
| Tyres | front 5.25x16-5.50x16; rear 5.50x16-6.00x16; Pirelli |
| Weight distribution | |
| Wheelbase | 84.64-88.58 in. (2,150-2,250 mm) |
| Wheels | wire wheels, 5.00x16 |
| Width | 57.08 in. (1,450 mm) |