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Model

553 F2

Type


Formula 2 racing car.

Years of activity


1953

First race


Italian Grand Prix on 13th September 1953

Engine


Type 106. 4 cylinders in line, aspirated, front-mounted, light alloy cylinder block and head, 138 mm connecting rod, steel cylinder liners, water cooled.

Bore and stroke


93 x 73,5 mm.

Unitary and total capacity


499.27 / 1,997.11 cc.

Compression ratio


13:1.

Max. power output


180 bhp at 7,200 rpm.

Timing gear


2 valves per cylinder, 2 overhead camshafts with tappets and rollers, gear drive at front.

Fuel feed


2 horizontal Weber 50 DCOA-3 twin-choke carburettors.

Ignition


Double with 2 Marelli magnetos.

Lubrication


Forced with dry sump.

Transmission


Rear. Multi-plate clutch, gearbox with 4 speeds + reverse, in block with self-locking differential.

Gear ratios


Variable depending on racing circuit.

Frame


Type 553. Steel tube frame.

Front suspension


Double wishbones: double triangles, transverse lower leaf spring, anti-roll bar and Houdaille hydraulic lever dampers.

Rear suspension


De Dion live axle, two longitudinal struts, transverse lower leaf spring and Houdaille hydraulic lever damper.

Steering


Worm and sector.

Brakes


Finned bimetallic drums with independent hydraulic control for front and rear wheels.

Tyres


Front 5.25/5.50x16", rear 7.00x16".

Rims


Spoked, front 3.50/4.00x16", rear 5.50x16".

Wheelbase


2,160 mm.

Front/rear track


1,278 mm / 1,250 mm.

Length


3,988 mm.

Width


1,427 mm.

Height


1,020 mm.

Weight with water and oil


590 kg.

Fuel tank (litres)


N. a. Mixture. 2 side tanks.

Bodywork


Aluminium single-seater body with 2 side fuel tanks.