Jaguar XJ12 Series 2: A Comprehensive Buyer's Guide
The Jaguar XJ12 Series 2, a refined and powerful luxury sedan, represented the pinnacle of Jaguar's engineering prowess during its production run. This guide delves into the specifics of this model, offering insights for potential buyers and enthusiasts.
1. Introduction
The XJ12 Series 2 was produced from 1973 to 1979, building upon the foundation laid by the Series 1 XJ. It firmly positioned itself as a luxury car, competing with rivals such as the Mercedes-Benz S-Class and BMW 7 Series. The XJ12 was Jaguar's flagship model, boasting a smooth and potent V12 engine that set it apart. The Series 2 also addressed some of the shortcomings of the earlier models, refining the styling and improving reliability in certain areas. It offered a blend of performance, comfort, and distinctive British styling that continues to attract enthusiasts today.
2. Generations and Key Changes
- Series 1 (1968-1973): The original XJ. The XJ12 variant was introduced in 1972 near the end of the series 1 production.
- Series 2 (1973-1979):
- Major Changes: A raised front bumper to meet US safety regulations, revised dashboard, improved ventilation system, simplified electrical system compared to early series 1 XJ models.
- Years: 1973-1979
- Engines: 5.3L V12. Fuel injection systems varied across years.
- Key Features: Distinctive radiator grille, comfortable ride, powerful V12 engine.
- Series 3 (1979-1992): Introduced a more modern, Pininfarina-designed exterior, updated interior, and further improvements to reliability.
3. Reliability & Common Issues
While the XJ12 Series 2 offers a unique driving experience, potential buyers should be aware of its potential mechanical vulnerabilities. Owning and maintaining a classic Jaguar requires patience and a willingness to address potential issues.
Engine
- Cooling System: The V12 engine generates significant heat, making the cooling system a critical area. Overheating is a common issue, often due to a clogged radiator, faulty thermostat, or leaking hoses. Regularly inspect and maintain the cooling system to prevent severe engine damage. Aluminum heads can corrode over time, causing leaks and potential head gasket failure.
- Fuel System: Early Series 2 models employed SU carburetors, while later models (especially those destined for the US market) featured Lucas fuel injection. The SU carburetors can be challenging to tune and maintain, while the Lucas system is prone to electrical issues and fuel leaks. Fuel injection systems have many rubber hoses that break down over time. Replacing these hoses with modern fuel-compatible rubber is a good idea.
- Oil Leaks: The V12 engine is notorious for oil leaks, particularly from the valve covers, rear main seal, and oil pan gasket. Regular oil level checks are essential.
- Electrical System: Like many British cars of this era, the XJ12 Series 2 can suffer from electrical gremlins. Wiring harnesses can become brittle and corroded over time, leading to intermittent issues with lights, gauges, and other electrical components. Good grounding points are critical.
Transmission
- Borg-Warner Model 12: The automatic transmission, while generally reliable, can experience wear and tear over time. Look for smooth shifting and avoid vehicles with slipping or harsh gear changes. Regular fluid changes are crucial for longevity.
Suspension & Brakes
- Rear Suspension: The independent rear suspension is complex and can be costly to repair. Worn bushings and dampers can affect handling and ride quality.
- Brakes: Ensure the brakes are in good working order. Inspect brake lines for corrosion and check the condition of the brake pads and rotors. The inboard rear brakes are complex to service.
Body & Interior
- Rust: Rust is a significant concern, especially in areas with harsh climates. Inspect the body carefully for signs of rust, paying particular attention to the sills, floors, wheel arches, and around the windscreen.
- Interior: Check the condition of the leather upholstery, wood trim, and headliner. Restoration can be expensive. Ensure all gauges and switches are functioning correctly. Original radios are often unreliable.
4. Driving Experience
The Jaguar XJ12 Series 2 offers a unique and rewarding driving experience, characterized by its smooth power delivery and comfortable ride. However, potential buyers should be aware of its handling characteristics and potential drawbacks.
Pros:
- Effortless Power: The V12 engine provides ample power and torque, allowing for effortless acceleration and smooth cruising.
- Comfortable Ride: The suspension is designed for comfort, providing a smooth and refined ride quality.
- Distinctive Styling: The XJ12 Series 2 boasts a classic and elegant design that stands out from modern cars.
- Luxurious Interior: The interior is appointed with high-quality materials, such as leather and wood trim, creating a luxurious and comfortable environment.
Cons:
- Fuel Economy: The V12 engine is not known for its fuel efficiency. Expect relatively low MPG.
- Handling: While comfortable, the handling can feel somewhat soft and less precise compared to modern cars.
- Maintenance Costs: Maintaining a classic Jaguar can be expensive due to the cost of parts and specialized labor.
- Reliability Issues: As mentioned earlier, potential reliability issues should be carefully considered before purchasing.
5. Buying Advice
When considering an XJ12 Series 2, careful inspection and research are crucial.
Years to Look For:
- Later Production Years (1976-1979): These models generally benefit from improvements and refinements implemented throughout the production run. Cars with the fuel injection are desireable if it is functioning correctly, as it offers better starting and driveability than the carbureted models.
- Well-Maintained Examples: Prioritize vehicles that have been meticulously maintained and cared for by previous owners. Service records are invaluable.
What to Avoid:
- Cars with Significant Rust: Rust repair can be costly and time-consuming.
- Vehicles with Neglected Maintenance: Avoid cars with deferred maintenance or a lack of service history.
- Extensively Modified Examples: Unless modifications are professionally done and well-documented, it's generally best to avoid extensively modified vehicles.
Key Inspection Points:
- Engine: Check for smooth running, excessive smoke, and any unusual noises. Perform a compression test if possible.
- Cooling System: Inspect the radiator, hoses, and thermostat for leaks and corrosion.
- Transmission: Ensure smooth shifting and check for leaks.
- Suspension: Look for worn bushings and dampers.
- Brakes: Inspect brake lines, pads, and rotors.
- Body: Thoroughly inspect for rust, paying particular attention to vulnerable areas.
- Interior: Check the condition of the leather, wood trim, and headliner. Ensure all gauges and switches are functioning correctly.
Professional Inspection: Before making a purchase, it's highly recommended to have the vehicle inspected by a qualified mechanic specializing in classic Jaguars. They can identify potential issues and provide valuable insights.
The Jaguar XJ12 Series 2 is a classic luxury car that offers a unique blend of performance, comfort, and style. By carefully considering its potential issues and following this buying guide, you can increase your chances of finding a well-maintained example that will provide years of enjoyment.
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