Maserati 4CM

The Maserati 4CM is an open-wheel Grand Prix motor racing car, designed, developed and built by Italian manufacturer Maserati, in 1931.[2][3]

Maserati 4CM[1]
1933 Maserati 4CM
Designer(s)Maserati
Production1932-1938
PredecessorMaserati Tipo 26M
SuccessorMaserati 6CM
Technical specifications
ChassisSteel box-section frame, aluminum body
Suspension (front)Rigid axle, semi-elliptic leaf springs, friction shock absorbers
Suspension (rear)Live axle, semi-elliptic leaf springs, friction shock absorbers
Length3,680–4,000 mm (145–157 in)
Width1,480–1,500 mm (58–59 in)
Height1,200–1,350 mm (47–53 in)
Axle track1,200 mm (47 in) (front and rear)
Wheelbase2,400 mm (94 in)
Engine1.1–1.5 L (67–92 cu in) L4
(90/150 bhp) FR layout
Transmission4 speed manual transmission
Weight580 kg (1,280 lb)
Competition history

In 1930, Maserati decided to concentrate its efforts on the voiturette class, which was not contested by German manufacturers such as Mercedes-Benz and Auto Union. The 1,100 cc (1.1 L; 67 cu in) Tipo 4CM was Maserati's first racing voiturette.[4] The name of the car is derived as follows:

4: 4 cylinders engine

C : Corsa, for racing

M : Monoposto, for single seater

1937 Maserati 4CM

Built alongside the 4CS two-seater sports-racer, the 4CM was powered by a 1,088cc twin-overhead-camshaft supercharged four-cylinder engine that produced 125 bhp (93 kW) at 6,600rpm, an output sufficient to propel it to a top speed of 130 mph (210 km/h). Some cars came with a spare cylinder block, pistons, connecting rods and supercharger enabling it to be converted to 1,500 cc (1.5 L; 92 cu in) when required. Depending on the size of the engine, the roots-type supercharger boosted power to 90–150 hp (67–112 kW).[5][6]

It succeeded the Maserati Tipo 26M, and was itself slowly replaced by the Maserati 6CM around 1936.[7][8]

References
  1. "1934 - 1938 Maserati 4CM 1500 Specifications". Ultimatecarpage.com.
  2. "1934 - 1938 Maserati 4CM 1500 - Images, Specifications and Information". Ultimatecarpage.com.
  3. "1932 Maserati 4CM 1100 | Maserati". April 18, 2016.
  4. "Bonhams : 1937 Maserati 4CM Monoposto Chassis no. 1128 Engine no. 1128". www.bonhams.com. Retrieved 2023-02-04.
  5. "1933 Maserati 4CM". conceptcarz.com.
  6. "Maserati 4CM – primotipo…". primotipo...
  7. "Maserati 4CM". Motor Sport Magazine.
  8. "THE GOLDEN ERA OF GP RACING - MAIN DIRECTORY". www.kolumbus.fi.
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