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
Bodyworkaluminium-bodied single seater
Bore and stroke69x100 mm
Brakeshydraulic drum brakes on the wheels
Brakes front
Brakes rear
Chassisladder frame, with two longitudinal steel girders and cross members
Compression ratio6:1
Cooling systemwater-cooled, centrifugal pump
Displacements (unitary)
Dry weight1,278 lbs (580 kg)
Enginein-line vertical 4
Engine weight
First race
Front Tyres
Front suspensionleaf springs, friction dampers
Front track
Fuel & lubricant
Fuel feedRoots supercharger
Fuel tank25.30 Imp. gall. (115 litres)
Gear ratios
Height53.15 in. (1,350 mm)
Ignitionsingle-plug, Scintilla magneto
Kerb weight
Length144.88 in. (3,680 mm)
Lubricationdual oil pumps (pressure and scavenge)
Maximum power130-150 bhp at 5,600-6,000 rpm
Maximum torque
Model4CM 1500
One mile
Production dates1934-1938
Production start1934
Quarter mile
Rear Tyres
Rear suspensionleaf springs and friction dampers
Rear track
Steeringworm and sector
Timing geartwo valves per cylinder set in a 90°V, twin overhead camshafts
Top speed118-143 mph (190-230 km/h)
Total displacement1,495.7cc
Transmission4-speed + reverse
Tyresfr/rear 5.25x17-6.00x16; Pirelli
Weight distribution
Wheelbase94.49 in. (2,400 mm)
Wheelswire wheels, 4.00x17-4.00x16
Width58.27 in. (1,480 mm)