Positioning:
The Lamborghini Diablo VT represented the pinnacle of Italian supercar engineering in the mid-to-late 1990s, focusing on exotic performance, distinctive styling, and advanced (for its time) all-wheel-drive capability.
Competitors:
Competed with contemporary supercars such as the Ferrari F355, Porsche 911 Turbo (993), and McLaren F1.
Vt System:
The 'VT' designation signifies the inclusion of a viscous-traction all-wheel-drive system, enhancing stability and grip.
Design Philosophy:
Embodied Lamborghini's traditional aggressive styling, scissor doors (on some variants, though Diablo generally used conventional doors), and a driver-focused cockpit.
Engine:
Detailed coverage of V12 engine, including maintenance, diagnostics, disassembly, and assembly.
Transmission:
Coverage of the VT (Viscous Traction) all-wheel-drive system and manual transmission.
Drivetrain:
Includes front and rear differentials, driveshafts, and CV joints specific to the VT system.
Suspension:
Detailed procedures for front and rear suspension components, including adjustment and alignment.
Brakes:
Comprehensive information on brake system maintenance, repair, bleeding, and component replacement.
Steering:
Information on steering system components, including power steering and alignment.
Electrical System:
Extensive coverage of the electrical system, including wiring diagrams, component testing, and diagnostics.
Fuel System:
Detailed information on fuel injection system, fuel pump, injectors, and fuel lines.
Cooling System:
Procedures for radiator, cooling fans, thermostat, and coolant hoses.
Exhaust System:
Details on exhaust manifolds, catalytic converters, mufflers, and exhaust pipe replacement.
HVAC System:
Coverage of air conditioning and heating system components and service.
Bodywork And Interior:
Includes procedures for body panel removal/installation, interior trim, and minor body repairs.
Wheels Tires:
Information on wheel specifications, tire pressure recommendations, and replacement procedures.
Maintenance:
Routine maintenance, fluid changes, filter replacements, and inspections.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common and complex issues.
Repair:
Detailed step-by-step instructions for component repair and replacement.
Disassembly Assembly:
Complete procedures for the disassembly and reassembly of all major vehicle components.
Adjustments:
Procedures for making precise adjustments to engine, suspension, and other systems.
Diagnostics:
Guidance on diagnosing electrical and mechanical faults, often referencing specific test procedures.
Special Tools:
Identification and usage instructions for specialized tools required for specific repairs.
Safety Precautions:
Explicitly mentions 'DANGER,' 'CAUTION,' and 'NOTE' remarks for safety-critical procedures, highlighting the manual's focus on safe working practices.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and drivetrain rebuilds. Includes factory specifications and tolerances.
Diagnostic Tools:
Manual references specific service tool numbers, indicating a need for specialized equipment for accurate diagnostics and repairs, a hallmark of supercar service.
Engine Type:
Naturally Aspirated V12
Displacement:
5.7 Liters (5706 cc)
Bore X Stroke:
82 mm x 91 mm (approximate, refer to manual for exact figures)
Valvetrain:
DOHC, 4 valves per cylinder (48 valves total)
Horsepower:
Approx. 440-490 hp (depending on specific year and market, manual will specify for covered years)
Torque:
Approx. 440-480 lb-ft (depending on specific year and market, manual will specify for covered years)
Fuel Delivery:
Electronic Fuel Injection (EFI), likely multi-point or sequential.
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
ECU:
Specific ECU models and diagnostic protocols will be detailed within the manual.
Length:
Approx. 4480 mm (176.4 in) - Refer to manual for exact figures by year.
Width:
Approx. 1900 mm (74.8 in) - Refer to manual for exact figures by year.
Height:
Approx. 1115 mm (43.9 in) - Refer to manual for exact figures by year.
Curb Weight:
Approx. 1560-1650 kg (3439-3638 lbs) - Refer to manual for exact figures by year.
Gross Weight Rating:
Not typically specified for this class of vehicle in a standard manner, but will be detailed in manual if applicable for specific components.
Oil Change:
Typically every 5,000-7,500 miles or 1 year, but specific intervals for the V12 engine will be detailed in the manual.
Major Service:
Major services involving timing belt replacement (if applicable, check manual for belt vs. chain) and comprehensive checks are critical and will be outlined.
Engine Oil:
Specific viscosity and API rating (e.g., 10W-60 or similar high-performance synthetic) will be provided in the manual. Capacity is high for a V12.
Coolant:
Ethylene glycol-based coolant, specific mix ratio and type detailed in the manual.
Brake Fluid:
DOT 4 or higher specification brake fluid recommended, refer to manual for precise type.
Transmission Fluid:
Specific gear oil viscosity and type for the manual gearbox and a separate fluid specification for the VT viscous coupling unit will be in the manual.
Common Problems:
Potential issues include aging electrical components, seal leaks, clutch wear, and specific HVAC system malfunctions. The manual will offer diagnostic and repair procedures for these.
Maintenance Importance:
Due to the exotic nature and complexity of the Diablo VT, strict adherence to the maintenance schedule and use of correct procedures is paramount for reliability and longevity.
Heritage:
Lamborghini has a long history of producing exotic and high-performance sports cars, known for their powerful engines and dramatic styling.
Evolution:
The Diablo evolved from the Countach and introduced more modern amenities and a more refined chassis, with the VT variant being a significant enhancement to performance and usability.
Production Period:
Lamborghini Diablo produced from 1990 to 2001. The VT variant was introduced in 1993.
Manufacturer Location:
Sant'Agata Bolognese, Italy
