Positioning:
A definitive guide for owners and mechanics seeking to maintain and repair the Alfa Romeo Alfetta, a sporty sedan known for its distinctive Italian engineering.
Advantage:
Provides factory-level technical data often not found in generic manuals, catering to the specific needs of Alfetta owners.
Features:
Step-by-step repair procedures, critical specifications, detailed diagrams, and troubleshooting advice.
Target User Experience:
Empowers owners to understand their vehicle and perform necessary maintenance and repairs with confidence.
Engine:
Detailed overhaul, tuning, diagnostics, fuel system, ignition system, cooling system, lubrication system.
Transmission:
Service, repair, and overhaul of the transaxle (gearbox and differential).
Drivetrain:
Clutch, driveshafts, propshaft, axle components.
Suspension:
Front and rear suspension components, geometry, shock absorbers, springs, control arms.
Steering:
Steering rack, linkage, power steering system (if equipped).
Brakes:
Front and rear brake systems (discs), master cylinder, hydraulic lines, parking brake.
Electrical System:
Wiring diagrams, starter, alternator, battery, lighting, instrumentation, ignition switch, fuses.
Body And Chassis:
Body panel removal and installation, door mechanisms, trim, chassis component inspection and repair.
Fuel System:
Carburetor(s) (Dell'Orto), fuel pump, fuel lines, fuel tank.
Cooling System:
Radiator, fan, water pump, thermostat, coolant hoses.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, lubrication points, tune-ups.
Repair:
Step-by-step repair instructions for all major systems, from minor adjustments to major overhauls.
Disassembly:
Detailed instructions for the removal and disassembly of components.
Assembly:
Comprehensive instructions for reassembly of components and systems.
Cleaning:
Guidance on cleaning specific parts during overhaul and repair.
Troubleshooting:
Diagnostic procedures and guidance for identifying common faults and issues.
Specifications:
Critical technical specifications for all systems, including tolerances, torque values, clearances.
Illustrations:
Includes diagrams, schematics, and photographs to aid in understanding procedures.
Coverage Level:
Comprehensive, covering from basic maintenance to advanced mechanical and electrical repairs.
Target Audience:
Professional technicians and experienced DIY enthusiasts.
Engine Code:
105 Series (example for early models, specific Alfetta codes may vary slightly)
Engine Type:
Inline-4, DOHC (Dual Overhead Camshaft)
Displacement:
1.8 Liters (1779 cc) / 2.0 Liters (1986 cc) - common for 1973 models
Bore X Stroke:
Refer to manual for specific engine variant (e.g., 84.4 mm x 80 mm for 2.0L)
Horsepower:
Approximately 122 hp (1.8L) to 130 hp (2.0L) DIN, depending on market and tuning.
Torque:
Refer to manual for specific engine variant (e.g., approximately 170 Nm for 2.0L).
Fuel Delivery:
Twin Dell'Orto DHLA carburetors (e.g., 40mm).
Fuel Type:
Unleaded gasoline (RON 95 recommended for original tuning, or as per manual).
Ignition Type:
Distributor-based, coil ignition.
Oil Type Recommendation:
SAE 20W-50 or SAE 10W-40 (API SE/SF classification). Specific viscosity may vary with climate. Refer to manual for precise recommendation.
Oil Capacity:
Approximately 4.5 - 5.0 Liters (including filter). Refer to manual for exact capacity.
Transmission Type:
5-speed manual transaxle (gearbox and differential integrated).
Optional Transmission:
Rarely, an automatic transmission might have been offered in certain markets, but the 5-speed manual is characteristic.
Transaxle Layout:
Rear-wheel drive with engine at front and gearbox/differential at rear (transaxle configuration).
Gearbox Oil Type:
Hypoid gear oil, API GL-4, SAE 80W-90. Refer to manual for specific recommendation.
Gearbox Oil Capacity:
Refer to manual for precise capacity of the transaxle.
Wheelbase:
Approximately 2630 mm (103.5 inches)
Length:
Approximately 4240 mm (167 inches)
Width:
Approximately 1680 mm (66 inches)
Height:
Approximately 1370 mm (54 inches)
Curb Weight:
Approximately 1200-1300 kg (2645-2866 lbs), depending on equipment.
Crash Test Data:
No formal crash test ratings comparable to modern standards are readily available for the 1973 model.
Braking System:
Four-wheel disc brakes, a significant safety feature for its era.
Steering System:
Rack and pinion steering, offering precise control.
Seatbelts:
Likely equipped with front lap belts as standard, with optional shoulder belts.
Construction:
Unitary body construction with integrated safety crumple zones (designed for the era).
Oil Change Interval:
Typically every 5,000 - 7,500 km (3,000 - 4,500 miles) or annually, whichever comes first. Refer to manual for specific recommendation.
Filter Replacement:
Oil filter should be replaced at every oil change. Air filter and fuel filter as per manual recommendations.
Tune Up Interval:
Spark plugs, points (if applicable), and ignition timing checks recommended every 10,000 - 15,000 km (6,000 - 9,000 miles).
Coolant Type:
Ethylene glycol based antifreeze mixture. Refer to manual for specific concentration and type.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid. Refer to manual for exact specification.
Common Wear Items:
Carburetor tuning, ignition system components (points, condenser, coil), exhaust systems, rust in common areas (wheel arches, sills, door bottoms), clutch wear, driveshaft U-joints.
General Maintenance Focus:
Regular checks of fluid levels, lubrication, and belt tension are crucial for longevity.
Brand Legacy:
Alfa Romeo boasts a rich history of sporty and stylish automobiles, often characterized by advanced engineering and passionate driving dynamics.
Alfetta Introduction:
The Alfetta was a groundbreaking model for Alfa Romeo, debuting in 1972 and featuring a novel transaxle layout and De Dion rear axle for improved weight distribution and handling.
1973 Model Year:
The 1973 model represents one of the earliest production years of the Alfetta sedan, showcasing the initial design and engineering principles of the platform.
Production Start Year:
1972
Manufacturing Location:
Italy