The Maserati Quattroporte

"A brief return with French flavouring!"

Photos and text courtesy of Ermanno Cozza

Before continuing with the evolution of the Quattroporte, we must record an idea proposed by the Casa to produce, in limited numbers, a car with coachwork by Pietro Frua made especially for a very important client, Karim Aga Khan, already the owner of other Maseratis.

This car, designated AM 121 by the factory, was built on the chassis of the Indy and powered by a 4.9-litre V8 engine, thereby giving the car an extremely reliable mechanical profile. The styling, although traditional, was for that period elegant without being too spectacular. Exceptionally refined, it represented the logical successor to the Quattroporte I.			# AM 121.004 - the prototype with coachwork by Pietro Frua

However this 'Quattroporte' never reached the production stage and remained a prototype, due largely to the political situation at Citroën, the then owners of Maserati, who encouraged a policy of producing cars utilising as many French components as possible.

Official Bertone photograph of the Quattroporte II		Official Bertone photograph of the Quattroporte II

Official Bertone photograph of the Quattroporte II		Official Bertone photograph of the Quattroporte II

As the years passed by, production of the Quattroporte I ended and the need for a new four-door saloon became apparent.

The Quattroporte II with bodywork designed by Bertone		And so was born the Quattroporte II, built with many sophisticated components already in use at Citroën for their own production cars: hydropneumatic suspension, the 'fullpower' braking system and self-centring power steering, even when the car was stationary. The fuel crisis of the early Seventies and the opportunity of making use of the 3-litre V6 engine that had been in production for some time, made this power unit the obvious choice for the new saloon, even though its weight demanded a more powerful larger capacity engine.

The prototype of this model, designated AM 123 by the factory, was first displayed at the Paris Motor Show on the 3rd October 1974.

With coachwork designed by Bertone, who had utilised all his skills to achieve a design that was 'clean' with proportionate dimensions, the Quattroporte II gave one the impression of being elegant and "leggera". Particular attention was paid to sound insulation of the engine bay and wind noise was kept to a minimum by its aerodynamic exterior profile. The well finished interior oozed luxury (all four door widows had individual retractable sun blinds), the digital instrument panel, á la Citroën, being particularly sophisticated.			The clean lines of the Bertone Quattroporte

Thanks to the use of the front-wheel drive, the Quattroporte II had a spacious interior, with a clear floor-pan free from the traditional transmission tunnel, and an extremely spacious boot compartment (25 cu ft).

The Quattroporte II		The drive was effortless in spite of it's size: steering was particularly light with a total lack of adverse reactions. The level of ride comfort was extremely good thanks to the use of Citroën's hydropneumatic suspension, power steering and the servo-assisted brakes. However the car lacked something in the power and torque department, enough to make one weep for the power of that V8 engine. Performance figures from the official factory brochure claimed a top speed in excess of 200 kph (125 mph) and acceleration from 0 to 100 kph (62 mph) in nine seconds.


X-ray view of the Quattroporte II


The hydraulic system of the Quattroporte II

1	Hand brake (released)	9	Electric sun roof
2	Interior light	10	Driver's electric window (left)
3	Heated rear window	11	Rear passenger electric window (left)
4	Headlight door	12	Electronic clock
5	Fog light	13	Front passenger electric window (right)
6	Hazard warning light	14	Rear passenger electric window (right)
7	Instrument panel illumination	15	Glove box
8	Headlights	16	Passenger side air vent

The digital dashboard of the Quattroporte II

17	Air vent grill control	26	Ignition switch
18	Central air vent	27	Clutch pedal
19	Air blower switch	28	Padded steering wheel
20	Air-conditioning temperature switch	29	Driver's foot rest
21	Air-conditioning control lever	30	Hand brake pedal
22	Manual choke	31	Levers for opening boot and fuel cap
23	Gear lever	32	Lever for opening engine bonnet
24	Accelerator pedal	33	Direction indicator lever
25	Brake pedal	34	Windscreen washer and wiper lever


Standard equipment included air conditioning, tinted windows, sun blinds on all windows, radio cassette, electric windows, power steering and a heated rear window. Optional extras included leather interior and an electric sliding roof.

The engine, gearbox and differential assembly of the Quattroporte II

Early in 1968 Citroën gave Giulio Alfieri, Maserati's chief engineer, six months to design a new lightweight compact engine for their future SM model: the 'genius' took only three! Alfieri based his new V6 design by removing two cylinders from an earlier V8 design. The result was the 2.7-litre C114 engine with four overhead camshafts and two valves per cylinder. This all-alloy engine was used successfully in the Citroen SM and later, bored out to 3 litres (by increasing the bore size from 87 mm to 91.6 mm) in the Merak. The 3-litre engine, with its 210 bhp, performed well in the Merak, but in the Quattroporte II, was seriously handicapped by the car's weight of 1600 kg (around 3500 lbs).			The 210 bhp 3-litre engine

The refusal on the part of Citroën to make any further investment into the company made the financial situation at Maserati so serious that on the 23rd of May 1974, Citroën placed the company into liquidation. These events meant that the Quattroporte II was unable to complete its full homologation process and only the 13 examples on the production line were completed when production ended.

TECHNICAL DATA - TIPO 123

Body type	4-door 4/5-seater Luxury Saloon

Production years	From 1974 to 1975

Engine	Front engined V6 cylinder @ 90°

Bore and stroke	91.6 mm X 75 mm

Engine capacity	2965 cc

Compression ratio	8.8:1

Maximum power	210 bhp @ 6000 rpm

Distribution	Four overhead camshafts, two valves per cylinder

Induction system	No 3 twin-choke down-draught 44 DCNF Weber carburettors

Ignition	Single with distributor

Lubrification	Forced with pressure pump

Transmission	Front wheel drive

Clutch	Single dry plate with hydraulic control

Gearbox	Manual 5-speed and reverse

Chassis	Body integral with frame and support-chassis

Front suspension:-	Independent wheels with hydropneumatic suspension - automatic self-leveling system - Possibility to change road clearance when necessary

Rear suspension:-	Independent wheels with hydropneumatic suspension - automatic self-leveling system - Possibility to change road clearance when necessary

Brakes	4 twin circuit disc brakes with automatic distribution of load

Wheelbase	3070 mm

Wheel tracks	Front 1520 mm Rear 1490 mm

Tyres	Front:- 205x70 VR15 Rear:- 205x70 VR15

Dry weight	1600 kg

Overall length	5130 mm

Overall width	1870 mm

Overall height	1370 mm

Maximum speed	over 200 kph (245 kph)

Models constructed	13

Brochures courtesy of Dr. George Lipperts

Colour brochure for Quattroporte II

A rare comprehensive brochure for Quattroporte II
(contains many schematic drawings and full technical specification)