Tipo 4CM 1500 - 1932-1938

Tipo 4CM 1500

The growing interest in the 1500 cc category guaranteed the new 4CM 1500 a certain amount of commercial success, especially with non-Italian customers. In the meantime, however, the competition had come up with some impressive models themselves, such as the Delage 8-cylinder and the ERA with its Riley-inspired 6-cylinder engine.

But out on the circuits where a car's general stability counted more than its top speed, the 4CM 1500 took its revenge, as happened in the Eifelrennen at the Nürburgring in 1934, when Luigi Castelbarco drove the Maserati to victory in its class. The last version boasted a chassis very similar to the 6CM's, with a shorter wheelbase, independent front suspension with torsion bar springing, and a more modern body. It remained competitive until 1938.

Technical data

0-60 mph
Bodywork aluminium-bodied single seater
Bore and stroke 69x100 mm
Brakes hydraulic drum brakes on the wheels
Brakes front
Brakes rear
Chassis ladder frame, with two longitudinal steel girders and cross members
Compression ratio 6:1
Cooling system water-cooled, centrifugal pump
Displacements (unitary)
Dry weight 1,278 lbs (580 kg)
Engine in-line vertical 4
Engine weight
First race
Front Tyres
Front suspension leaf springs, friction dampers
Front track
Fuel & lubricant
Fuel feed Roots supercharger
Fuel tank 25.30 Imp. gall. (115 litres)
Gear ratios
Height 53.15 in. (1,350 mm)
Ignition single-plug, Scintilla magneto
Kerb weight
Length 144.88 in. (3,680 mm)
Lubrication dual oil pumps (pressure and scavenge)
Maximum power 130-150 bhp at 5,600-6,000 rpm
Maximum torque
Model 4CM 1500
One mile
Production dates 1934-1938
Production start 1934
Quarter mile
Rear Tyres
Rear suspension leaf springs and friction dampers
Rear track
Steering worm and sector
Timing gear two valves per cylinder set in a 90°V, twin overhead camshafts
Top speed 118-143 mph (190-230 km/h)
Total displacement 1,495.7cc
Transmission 4-speed + reverse
Tyres fr/rear 5.25x17-6.00x16; Pirelli
Weight distribution
Wheelbase 94.49 in. (2,400 mm)
Wheels wire wheels, 4.00x17-4.00x16
Width 58.27 in. (1,480 mm)