1972 Alfa Romeo Tipo 33/TT/3

From  1972

Chassis  AR 115 72*003*

Dampers  Adjustable Type

Disc Brakes  Rear / Front

Front Suspension  Unequal double wishbones and coil springs

Fuel tank capacity  130 litre

Manufacturer  ALFA ROMEO SPA

Notes Chassis  Steel tubes with light alloy panels

Notes Brakes  Ventilated discs mounted inboard at the rear on early TT 3s to reduce unsprung weight, later moved outboard for easier service.

Notes Suspension  Geometry revised compared to the 33/3. Camber and toe could be adjusted for both front/rear; spring rates and damper settings were tuned depending on circuit/endurance spec.

Chassis Frame  Tubular Spaceframe

Rears Suspension  Unequal double wishbones and coil springs

Steering  Rack and pinion

Wheel track front  1530 mm

Wheel track rear  1520 mm

Wheelbase  2350 mm

From  1972

Arrangement  V-Type

Bore  86 mm

Stroke  64 mm

Compression Ratio  11 : 1

Cooling System  Water Cooled

Cubic displacement  2993 cc

Cylinders  8

Electrical equipment Volt  12

Engine  *030*0092*

Engine Type  Mid

Final drive  Hypoid type

Fuel System Injection type  indirect injection

Gearbox Number of forward speed  5

LSD  Y

Manufacturer  ALFA ROMEO SPA

Maximum power  440 hp

Maximum power  9800 rpm

Maximum torque  33 kgm

Maximum torque  7500 rpm

Notes Fuel System  Lucas, later Spica mechanical

Notes Gearbox  racing-spec unit adapted from Hewland / AP Racing components, modified by Autodelta

Notes Engine  90° V8, Derived from the earlier 2-litre unit, extensively revised

Top speed  320 Km/h

Transmission Clutch  Dry dual disc Hydraulic

Fuel Type  Petrol-Gasoline

Valves per cylinder  4

Valvetrain  DOHC

Transmission Wheel drive  Rear wheel drive

From  1975

Coachbuilder  Autodelta

Colour  Red

Wheels type  Alloy

Height  940 mm

Material  fiberglass reinforced plastic (GRP)

Notes body  TT12-type body. Large rear wing introduced for additional downforce. Extended engine cover and side intakes for cooling the flat-12 engine. Front with wide nose and integrated splitter to increase front-end grip. Easily removable panels for quick access to the engine and suspension during endurance races. Aerodynamic refinement in collaboration with wind tunnel testing (notably at the Politecnico di Milano).

Number of wheels  4

Type of body  Sport and Barchetta

Tyres Front size  10.5/23.0–13

Tyres Rear size  15.0/26.0–15

Unladen weight  650 kg

Wheels Front size  13 in diameter × 10–12 in wide

Wheels Rear size  15 in diameter × 15–16 in wide

Width  1820 mm

From  1972

Hand drive  RHD - Right Hand Drive

Number of seats  1