The Morgan Plus 8 3.5 EFI, produced between 1984 and 1990, represents a significant evolution in the long-running Plus 8 lineage. This iteration, powered by a Rover V8 engine and featuring electronic fuel injection (EFI), offered a substantial performance upgrade over earlier carbureted models. It occupied the top-tier position within the Morgan lineup during its production run, appealing to drivers seeking a classic British sports car experience with enhanced reliability and power. The Plus 8, in general, has always been a unique offering, blending traditional coachbuilding techniques with modern mechanical components, and the 3.5 EFI continued this tradition.
Technical Specifications
| Brand | Morgan |
| Model | Plus 8 |
| Generation | Plus 8 |
| Type (Engine) | 3.5 EFI (193 Hp) |
| Start of production | 1984 |
| End of production | 1990 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 2 |
| Doors | 2 |
| Fuel consumption (urban) | 11.8 l/100 km (19.9 US mpg) |
| Fuel consumption (extra urban) | 6.6 l/100 km (35.6 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.6 sec |
| Acceleration 0 – 62 mph | 5.6 sec |
| Acceleration 0 – 60 mph | 5.3 sec |
| Maximum speed | 200 km/h (124.27 mph) |
| Weight-to-power ratio | 4.9 kg/Hp |
| Weight-to-torque ratio | 3.2 kg/Nm |
| Power | 193 Hp @ 5280 rpm |
| Power per litre | 48.9 Hp/l |
| Torque | 298 Nm @ 4000 rpm (219.79 lb.-ft. @ 4000 rpm) |
| Engine displacement | 3947 cm3 (240.86 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 94 mm (3.7 in.) |
| Piston Stroke | 71.12 mm (2.8 in.) |
| Compression ratio | 9.75:1 |
| Engine aspiration | Naturally aspirated |
| Kerb Weight | 940 kg (2072.35 lbs.) |
| Max. weight | 1200 kg (2645.55 lbs.) |
| Max load | 260 kg (573.2 lbs.) |
| Fuel tank capacity | 61 l (16.11 US gal | 13.42 UK gal) |
| Length | 3960 mm (155.91 in.) |
| Width | 1600 mm (62.99 in.) |
| Height | 1220 mm (48.03 in.) |
| Wheelbase | 2490 mm (98.03 in.) |
| Front track | 1380 mm (54.33 in.) |
| Rear track | 1375 mm (54.13 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 gears, manual transmission |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 205/60 VR15 |
| Wheel rims size | 15 |
Powertrain & Engine Architecture
The heart of the Plus 8 3.5 EFI is the Rover V8 engine, specifically the 3.5-liter variant. This engine, derived from the Buick-Oldsmobile-Pontiac V8 originally designed in the 1960s, had undergone significant development by Rover. The “EFI” designation indicates the adoption of Bosch K-Jetronic fuel injection, replacing the previous SU carburettors. This switch to EFI resulted in improved fuel efficiency, smoother power delivery, and increased reliability. The engine produces 193 horsepower at 5280 rpm and 298 Nm (219.79 lb-ft) of torque at 4000 rpm. The engine features a 9.75:1 compression ratio and a relatively mild camshaft profile, prioritizing usability and torque over outright peak power. The engine is mated to a five-speed manual transmission, providing a direct and engaging driving experience.
Driving Characteristics
The Plus 8 3.5 EFI delivers a distinctly British sports car driving experience. The combination of the lightweight chassis and the torquey V8 engine results in brisk acceleration – 0 to 60 mph in approximately 5.3 seconds. While not a track weapon, the Plus 8 offers ample power for spirited driving on winding roads. The five-speed manual transmission allows the driver to keep the engine in its sweet spot, maximizing performance. Compared to earlier carbureted Plus 8 models, the EFI version feels more responsive and refined. The manual gearbox provides a more involved driving experience than the automatic options available on some other Rover V8-powered vehicles. The car’s relatively low weight (around 2072 lbs) contributes to its nimble handling, although the traditional Morgan suspension setup can feel somewhat archaic by modern standards.
Equipment & Trim Levels
The Plus 8 3.5 EFI was generally well-equipped for a sports car of its era, though luxury wasn’t the primary focus. Standard features included leather upholstery, wood trim on the dashboard, and a full set of gauges. The interior was relatively spartan, reflecting the car’s focus on driving enjoyment. Options included a radio/cassette player, wire wheels (in place of the standard steel wheels with hubcaps), and various trim upgrades. The Plus 8 didn’t have distinct “trim levels” in the modern sense; customization was often achieved through a wide range of factory options. The car’s minimalist design and open-top configuration contribute to its raw and engaging driving experience.
Chassis & Braking
The Plus 8 utilizes a traditional ladder-frame chassis, a hallmark of Morgan’s construction methods. The suspension consists of wishbones at the front and a live axle with trailing arms at the rear. While effective, this setup doesn’t offer the sophistication of more modern independent suspension systems. Braking is provided by disc brakes at the front and drum brakes at the rear. While adequate for the car’s performance, the braking system isn’t particularly powerful by contemporary standards. The car’s relatively low weight helps to mitigate the limitations of the braking system. The steering is unassisted, providing a direct and communicative feel, but requiring some effort at low speeds.
Market Reception & Comparison
The Plus 8 3.5 EFI was generally well-received by automotive journalists and enthusiasts. Critics praised its performance, handling, and classic British charm. However, some noted the car’s somewhat archaic technology and lack of modern amenities. Compared to other sports cars of the era, such as the Porsche 911 or Mazda RX-7, the Plus 8 offered a different kind of experience – one that prioritized character and driving engagement over outright speed and sophistication. Within the Morgan lineup, the Plus 8 3.5 EFI represented the performance flagship, offering a significant upgrade over the 2.8-liter models. Fuel economy was reasonable for a V8-powered sports car, averaging around 20 mpg in mixed driving. Reliability was generally good, thanks to the Rover V8’s robust design and the benefits of EFI.
Legacy
The Morgan Plus 8 3.5 EFI remains a highly sought-after classic sports car. Its combination of performance, style, and traditional craftsmanship has ensured its enduring appeal. The Rover V8 engine is known for its durability and relative ease of maintenance, making these cars relatively practical to own. However, sourcing parts can sometimes be challenging, as many components are no longer in production. Today, the Plus 8 3.5 EFI commands a premium in the used car market, attracting collectors and enthusiasts who appreciate its unique character and driving experience. It stands as a testament to Morgan’s commitment to building distinctive and engaging sports cars that defy convention.
