Generation:
First Generation
Production Years Covered:
1974, 1975, 1976, 1977, 1978
Chassis Code:
860 GT (specific variations may exist)
Historical Context:
The Ducati 860 GT was a significant model for Ducati, aiming to blend performance with a more user-friendly and comfortable touring package compared to earlier models. It represented Ducati's evolution in design and engineering during the mid-1970s.
Competitors:
Competed against other Italian and European performance motorcycles of the era, often emphasizing sporty handling and characteristic V-twin engine sound and feel.
Design Philosophy:
Designed as a 'Gran Turismo' (Grand Tourer) motorcycle, offering a balance of sporting performance and long-distance comfort.
Manual Benefit:
Empowers owners to perform their own maintenance and repairs, saving costs and ensuring high-quality workmanship. Provides in-depth knowledge for emergency situations.
Engine:
Detailed service, repair, overhaul, and troubleshooting for the 860cc V-twin engine.
Transmission:
Service, repair, and adjustment of the gearbox and clutch systems.
Brakes:
Comprehensive coverage of the front and rear braking systems, including hydraulic components.
Electrical System:
Detailed wiring diagrams, component testing, and troubleshooting for the entire electrical system.
Suspension:
Service and adjustment procedures for front forks and rear shock absorbers.
Steering:
Maintenance and repair of the steering head and linkages.
Cooling System:
Air-cooling system principles and maintenance.
Fuel System:
Carburetor tuning, fuel delivery, and related components.
Chassis Body:
Frame inspection, bodywork repair, and component mounting.
Maintenance:
General maintenance, periodic checks, and routine servicing.
Troubleshooting:
Systematic diagnostic procedures for common and complex issues.
Repair:
Step-by-step instructions for component disassembly, repair, and reassembly.
Refurbishment Renovation:
Guidance on restoring and renovating various vehicle components.
Depth:
Comprehensive, covering basic to advanced repair and diagnostic procedures.
Type:
Air-cooled, 90-degree (L-twin) V-twin, desmodromic valve actuation.
Displacement:
860 cc (approx. 52.5 cubic inches)
Bore X Stroke:
83 mm x 80 mm (approximate, variations may exist)
Compression Ratio:
9.0:1 (typical)
Horsepower:
Approx. 65-70 hp at 7000 rpm (figures vary by specific tune and market)
Torque:
Approx. 70 Nm (51.6 lb-ft) at 5000 rpm (figures vary by specific tune and market)
Carburetion:
Typically twin Dell'Orto PHM 40 or similar carburetors.
Fuel Type:
Unleaded gasoline (premium recommended)
Length:
Approx. 2150 mm (84.6 inches)
Width:
Approx. 780 mm (30.7 inches)
Height:
Approx. 1150 mm (45.3 inches)
Dry Weight:
Approx. 200-215 kg (440-474 lbs)
Fuel Tank Capacity:
Approx. 18 liters (4.8 US gallons)
Historical Ratings:
N/A (Vehicle safety ratings were not standardized as they are today for motorcycles).
Brakes:
Dual front discs, single rear disc.
Lighting:
Halogen headlight, taillight, turn signals.
Oil Change:
Every 3,000-5,000 km (or annually), depending on usage. Refer to manual for specific recommendations.
Desmodromic Valve Adjustment:
Intervals vary significantly; typically checked every 10,000-20,000 km. Critical to follow manual procedures.
Carburetor Sync And Cleaning:
Recommended annually or as needed for optimal performance.
Engine Oil:
SAE 20W-50 or 10W-40 motorcycle-specific oil. Check manual for exact viscosity and API service classification.
Brake Fluid:
DOT 3 or DOT 4 DOT compliant brake fluid.
Gearbox Oil:
Refer to manual for specific gearbox oil grade (often SAE 90 gear oil or specific motorcycle transmission fluid).
Electrical Gremlins:
Vintage Ducati electrical systems can be prone to aging components, loose connections, and corroded wiring. The manual provides detailed diagrams to address this.
Desmodromic System Maintenance:
The desmodromic valve system requires precise adjustment and can be complex. Regular checks are crucial to prevent damage.
Carburetor Issues:
Dell'Orto carburetors can require periodic cleaning and synchronization for smooth running, especially with fuel degradation.
Ducati Legacy:
Ducati has a rich history of performance motorcycles, renowned for its L-twin engines and racing heritage, dating back to the 1920s.
860 Series Development:
The 860 GT was part of a series that included the 860 GTS (Sport), building upon the platform of earlier Ducati V-twins and incorporating modern styling and chassis improvements.
Manufacturing Location:
Bologna, Italy.
