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Maserati Tipo 4C 2500 - 4CM 2500
Specifications
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Maserati Tipo 4C 2500

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SPECIFICATIONS

Brief History:
In 1932 when the 4 cylinder 1100 and 1500 cc engines began to show so much promise work began on two engines, one a 2000 cc with a stroke of 98 mm and the 2500 cc with a stroke of 112 mm.  The cylinder block of the 2500 cc with its fixed heads and thus fused in sets of two was extracted from the 2000 cc by a simple increase in bore - from 80 mm to 84 mm.   Only one engine (No 2012) delayed until 1934 was built, but it had a varied life.  In 1934 it was first placed into an old 2-seater sports frame but set up for circuit racing and therefore earned the designation 4C 2500.  In this form Taruffi drove it in the 1934 Monaco Grand Prix and then with Zehender at the Montreux.  Afterward (still in 1934) the engine was mounted in a single-seat frame for Villapadierna and thereby earned its 4CM designation.  It was subsequently returned in 1935 and placed in modern 6C34 coachwork for Farina, then in 1936 presented as a sports version by Trossi until finally mounted in a 6CM frame (no 1549) by Hartmann in 1937.

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Specifications:
Production Period: 1934-1937
Designed By: Alfieri Maserati
Body Built By: 4C is two seater racer with a sports frame (single seater frame in the 4CM) aluminium body
Number Built: 1
Dry Weight: 700 kg (600 kg for the 4CM)
Top Speed: 220 kph
Engine Type: Front, vertical in-line four
Bore and Stroke: 84x112mm 
Displacement: 2482.6 cc
Compression: 5.8:1
Engine Output: 195 bhp @ 5300 rpm
Valves & Actuation: Two OHV per cylinder in 90º "V" with dual overhead camshafts
Carburettion: Forced by Roots compressor, with Weber 55ASI or DCO mounted on compressor intake
Ignition: Single by Scintilla magneto
Lubrication: Forced with pressure and scavenger pumps
Drive: Rear wheel drive
Clutch: Dry multi-disc
Gearbox: 4-speeds plus reverse
Frame: Two longitudinal members with cross-members of profiled steel.  In 1934-35 Type 4CM frame.  In 1937 Type 6CM frame
Suspension - Front: Leaf springs with friction dampers
Suspension - Rear: Rigid axle, longitudinal leaf springs with friction dampers
Brakes: Mechanically operated wheel drums - in the 2 seater 4C frame then hydraulic in the 4CM frame
Wheelbase: 2450 mm
Front & Rear Track: 1200 mm front; 1200 mm rear
Wheels & Tyres: Spoked.  Tyres Pirelli 5.00x19 front and rear
    
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Maserati 3500GT
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Last updated:   Monday, June 30, 2003.