🏷️ Basic Information

Make:

Alfa Romeo

Model:

1750

Model Designation:

1750 Berlina, 1750 GTV, 1750 Spider Veloce

Chassis Codes:

105.29 (Berlina), 105.51 (GTV), 105.52 (GTV LHD), 115.37 (Spider Veloce)

Engine Codes:

1750

👋 Introduction

Positioning:

The Alfa Romeo 1750 series represented a significant step forward for Alfa Romeo in the late 1960s and early 1970s, offering a blend of sporty performance, elegant Italian design, and practical usability. It competed against other European sport sedans and coupes of its era.

Competitors:

BMW 2002, Lancia Fulvia Coupe, Fiat 124 Sport Coupe, Ford Capri.

Defining Aspects:

DOHC inline-four engine, dual overhead camshafts, sporty handling, stylish Pininfarina design (Berlina and Spider), Bertone design (GTV), rear-wheel drive, a true driver's car.

Driving Experience:

Renowned for its sharp handling, communicative steering, and the distinct mechanical soundtrack of its twin-cam engine, offering an engaging driving experience.

📋 Manual Details

Models Covered:

All Alfa Romeo 1750 models, engines, trim levels, and transmission types

Estimated Page Count:

Likely over 500 pages (typical for comprehensive workshop manuals of this era)

Type:

Complete Workshop Service Repair Manual

Language:

English

Format:

Downloadable Digital File (PDF)

📖 Manual Coverage

All Major Systems:

Engine, Fuel System, Ignition System, Cooling System, Lubrication System, Exhaust System, Clutch, Manual Transmission, Automatic Transmission (if applicable to specific variants), Driveshafts, Rear Axle, Steering System, Front Suspension, Rear Suspension, Brakes (Front and Rear), Electrical System (including wiring diagrams), Bodywork, Interior Trim, Heating and Ventilation, Air Conditioning (if equipped)

Engine Mechanical:

Engine block, cylinder head, crankshaft, connecting rods, pistons, camshafts, valves, timing gear, oil pump, oil seals, gaskets.

Fuel And Emission:

Fuel tank, fuel pump, fuel lines, fuel filters, carburetor(s) overhaul and adjustment, emission control systems (if applicable to specific market versions).

Ignition And Electrical:

Spark plugs, ignition coils, distributors, points, condensers, alternators, starters, batteries, wiring diagrams, lighting systems, gauges, switches.

Transmission And Drivetrain:

Clutch operation, gearbox components, synchronizers, gears, bearings, seals, driveshafts, U-joints, differential, axle shafts.

Suspension And Steering:

Front control arms, ball joints, tie rods, steering rack/box, coil springs, shock absorbers, rear axle location, trailing arms, Panhard rod, springs, shock absorbers, wheel bearings.

Brakes:

Front disc brakes, rear drum brakes (or discs on some models), master cylinder, brake booster (if equipped), wheel cylinders, brake lines, parking brake system.

Body And Chassis:

Body panel repair, rust prevention, door mechanisms, window regulators, hood and trunk latches, sealing components.

Repair And Maintenance:

Routine maintenance, troubleshooting, diagnostic procedures, engine overhaul, transmission repair, brake system servicing, suspension and steering alignment, electrical component testing and repair, body panel repair and alignment, interior component removal and installation

Engine Repair:

Complete engine rebuild, cylinder head removal and reconditioning, piston and ring replacement, crankshaft and bearing service.

Transmission Repair:

Gearbox disassembly and reassembly, clutch replacement, synchronizer ring replacement.

Electrical Troubleshooting:

Fault diagnosis for lighting, ignition, starting, charging, and auxiliary circuits using wiring diagrams.

Suspension And Steering Adjustment:

Wheel alignment specifications, steering system adjustments.

Brake System Maintenance:

Brake pad/shoe replacement, caliper/wheel cylinder overhaul, brake bleeding.

Chassis And Suspension Components:

Inspection, replacement, and adjustment of all wear items including bushings, ball joints, control arms, and shock absorbers.

Interior Trim Removal:

Guidance on removing dashboard panels, door cards, seat upholstery for access to underlying components.

Heater Core And Ventilation:

Maintenance and repair of the heating system, including blower motor and ducting.

Depth:

Comprehensive, step-by-step instructions with detailed illustrations and diagrams suitable for both novice DIY mechanics and experienced technicians.

Diagnostic Procedures:

Includes methods for diagnosing common engine performance issues, electrical faults, and mechanical noises.

Torque Specifications:

Provides crucial torque values for critical fasteners across all major mechanical systems.

Illustrations And Diagrams:

Features detailed exploded views, wiring diagrams, and step-by-step illustrated procedures.

Troubleshooting Guides:

Systematic approaches to diagnose and resolve issues, often organized by symptom.

Specifications And Tolerances:

Detailed mechanical specifications, clearances, and tolerances for engine and transmission rebuilds.

📊 Manual Specifications

Format:

PDF (Portable Document Format)

Searchability:

Likely text-searchable PDF, allowing for quick retrieval of specific information.

Quality:

High resolution, suitable for clear printing of text and diagrams.

Readability:

Designed for clear reproduction of line drawings and schematics.

Binding:

N/A (Digital Download)

Paper:

N/A (Digital Download - printable on various paper types)

Software:

Adobe Reader (or compatible PDF viewer)

⚙️ Engine Specifications

Type:

DOHC Inline-4

Displacement:

1779 cc (1.8 Liters)

Bore X Stroke:

84.5 mm x 80 mm

Compression Ratio:

Approximately 9.0:1

Horsepower:

Approx. 132 hp (SAE gross) @ 5900 rpm

Torque:

Approx. 186 Nm (137 lb-ft) @ 3000 rpm

Redline:

Typically around 6000-6500 rpm

Induction:

Twin Weber 40 DFN carburetors (common on GTV and Spider)

Fuel Type:

Premium Unleaded Gasoline (historically required leaded fuel or treated unleaded)

Type:

Distributor-based ignition system

🔧 Transmission

Type:

5-speed manual transaxle

Type:

3-speed automatic (less common, available on some Berlina models)

Clutch:

Single dry plate, hydraulically operated

📐 Dimensions

Wheelbase:

2350 mm (92.5 in)

Front Track:

1300 mm (51.2 in)

Rear Track:

1310 mm (51.6 in)

Length:

Varies by body style (e.g., Berlina: ~4160 mm, GTV: ~4010 mm, Spider: ~3900 mm)

Width:

Varies by body style (e.g., Berlina: ~1620 mm, GTV: ~1650 mm, Spider: ~1630 mm)

Height:

Varies by body style (e.g., Berlina: ~1360 mm, GTV: ~1280 mm, Spider: ~1220 mm)

Curb Weight:

Approx. 1050-1150 kg (2315-2535 lbs) depending on body style

Gross Vehicle Weight Rating:

Approximately 1450-1550 kg

Towing Capacity:

Not specified or recommended

🛡️ Safety Features

Safety Standards:

Designed to 1970s safety standards; lacks modern safety features like airbags or ABS.

Handling Dynamics:

Excellent balance, responsive steering, independent front suspension contributed to good active safety.

Restraints:

Lap belts (front), lap or lap/shoulder belts (rear) depending on year and market.

💡 Technology Features

Audio System:

Typically AM/FM radio with a single speaker (optional upgrades were common).

Features:

None (no electronic driver aids present in original factory specifications).

Features:

N/A (no modern connectivity features).

🔧 Maintenance

Oil Change:

Every 5,000-7,500 km (3,000-5,000 miles) or annually

Tune Up:

Every 10,000-15,000 km (6,000-9,000 miles)

Spark Plug Replacement:

Every 10,000-15,000 km (6,000-9,000 miles)

Timing Belt Chain Inspection:

Inspect timing chain and tensioner regularly; replace as needed (no fixed interval).

Engine Oil:

SAE 20W-50 (or as recommended by Alfa Romeo; high-zinc content oil recommended for older engines)

Coolant:

50/50 mix of antifreeze and distilled water

Brake Fluid:

DOT 3 or DOT 4 (ensure compatibility with seals)

Transmission Fluid:

GL-4 Gear Oil (e.g., SAE 75W-90 or SAE 80W-90)

Differential Fluid:

GL-5 Gear Oil (e.g., SAE 75W-90 or SAE 80W-90)

Coolant Capacity:

Approximately 6-7 liters

Engine Oil Capacity:

Approximately 4.5-5 liters with filter

Common Problems:

Rust (especially around wheel arches, sills, and floor pans), electrical gremlins, carburetor tuning, timing chain wear, rear axle bushings, front suspension wear.

Ignition System:

Points and condenser maintenance, coil testing.

Cooling System:

Radiator leaks, water pump seals, thermostat issues.

Bodywork Corrosion:

Concentrated inspection needed for sills, floor pans, boot floor, A-pillars, and door bottoms.

Carburetor Performance:

Syncing of twin carbs is critical for smooth operation and power delivery; can be sensitive to adjustment.

📚 Vehicle History

Legacy:

Alfa Romeo is renowned for its sporting heritage, racing pedigree, and beautiful Italian design. The 1750 builds upon this reputation.

Predecessors:

Successor to models like the Giulia series and predecessor to the Alfetta and Nuova Giulietta. The 1750 was an evolution of the 105-series chassis and mechanicals, with a larger engine.

Production Years:

1967-1972

Manufacturing Location:

Italy

🏆 Awards & Recognition

Historical Acclaim:

The Alfa Romeo 1750 series, particularly the GTV and Spider, is highly regarded by enthusiasts for its driving dynamics, styling, and the overall 'Alfa Romeo experience'.