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Maserati Tipo 4CM 1100
Specifications
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Maserati Tipo 4CM 1100

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SPECIFICATIONS

Brief History:
Following the development of the 4C (or 4CTR) and its appearance at Monza, Alfieri recognised that the car was better suited to road racing, so the development of the 4CM proceeded using the same mechanicals, but a new single-seat frame and the hydraulic braking system that had been employed on the 8C Trazione Anteriore (front wheel drive).  In 1932 and 1933 the 1100 cc car did well against all competitors until from 1934 it was often outpaced by its 1500 cc rivals.  Nonetheless Maserati continued to develop the series until at the end of their development with a fixed head the magic 100 hp per litre of displacement had been surpassed.  In 1936 the Tipo 4CM 1100 developed by Furmanik and owned by Rovere, using a special body, was used to set a world record for its class and the outstanding power of 143 hp/litre was obtained - never having been achieved before in an automobile engine. The last car built for Lurani in 1937 had by then progressed to the latest generation chassis with independent front wheels and similar in appearance to the 6CM

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Specifications:
Production Period: 1932-1937
Designed By: Alfieri Maserati
Body Built By: Maserati - single seat in aluminium
Number Built: 9
Dry Weight: 580 kg
Top Speed: 185-210 kph
Engine Type: Front, vertical in-line four
Bore and Stroke: 65x82 mm
Displacement: 1088.4 cc
Compression: 5:1 - 6:1
Engine Output: 90 - 125 bhp @ 5300 - 6000 rpm

143 hp per litre obtained from fixed head version developed as a special project by Furmanik

Valves & Actuation: Two OHV per cylinder in 90º "V" with dual overhead camshafts
Carburettion: Forced by Roots compressor with Weber 48ASS on compressor intake.  14.04-17.22 kg/sq. cm mean effective pressure
Ignition: Single with Scintilla magneto
Lubrication: Forced by pressure and scavenger pumps
Drive: Rear wheel drive
Clutch: Dry single disc
Gearbox: 4-speeds plus reverse
Frame: Two longitudinal members with cross-members in profiled steel
Suspension - Front: Leaf springs with friction dampers.  
IN 1937: Independent wheels with torsion bars 
Suspension - Rear: Rigid axle, longitudinal leaf springs with friction dampers
Brakes: Hydraulically operated wheel drums
Wheelbase: 2400 mm.  In 1937 frame 2420 mm
Front & Rear Track: 1200 mm front; 1200 mm rear
Wheels & Tyres: Spoked: 4.00x16 front; 4.00x17 rear
Tyres: Pirelli 5.50x16 & 5.00x17 front and 5.50x16 & 5.00x17 rear
    
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Last updated:   Monday, June 30, 2003.