The Isuzu Trooper Soft Top 2.2 TD (UBS52), produced from 1984 to 1991, represents a unique iteration of the first-generation Trooper, a vehicle Isuzu positioned as a rugged, affordable, and capable SUV. This variant, distinguished by its removable soft top and turbocharged 2.2-liter diesel engine, was primarily aimed at buyers seeking a versatile vehicle for both on-road driving and light off-road adventures. While the Trooper was sold globally, the soft-top version, and particularly the diesel variant, found a niche market in Europe and other regions where fuel efficiency and practicality were highly valued. In the United States, the Trooper was initially marketed as a more luxurious alternative to the Jeep Cherokee, but the soft-top diesel was not a major offering in the North American market.
Technical Specifications
| Brand | Isuzu |
| Model | Trooper |
| Generation | Trooper Soft Top (UBS52) |
| Type (Engine) | 2.2 TD (72 Hp) |
| Start of Production | 1984 |
| End of Production | 1991 |
| Powertrain Architecture | Internal Combustion Engine |
| Body Type | SUV |
| Fuel Type | Diesel |
| Power | 72 Hp |
| Engine Aspiration | Turbocharger |
Powertrain & Engine Architecture
The heart of the Trooper Soft Top 2.2 TD (UBS52) is the 4ZD1 2.2-liter inline-four diesel engine. This engine, while relatively modest in output by modern standards, was designed for durability and fuel economy. The 4ZD1 featured indirect injection, a common characteristic of diesel engines of that era. The turbocharger, a key component, significantly boosted power output compared to naturally aspirated versions of the same engine. The turbocharger helped to overcome the inherent limitations of the indirect injection system, providing a noticeable increase in torque. The engine utilized a cast iron block and head, contributing to its robust construction. The fuel injection system was a mechanical, Bosch-supplied unit, known for its reliability but also for requiring periodic maintenance and adjustment. The engine’s valvetrain consisted of a single overhead camshaft (SOHC) operating two valves per cylinder. The transmission paired with this engine was typically a four-speed automatic, although a five-speed manual transmission was also available in some markets. The automatic transmission was chosen to enhance ease of use, particularly for drivers unfamiliar with manual transmissions or those frequently navigating urban environments.
Driving Characteristics
The 72 horsepower output of the 2.2 TD engine, coupled with the four-speed automatic transmission, resulted in a driving experience focused on practicality rather than performance. Acceleration was leisurely, and overtaking required careful planning. The engine produced a respectable 148 lb-ft of torque, which was available at relatively low RPMs, making it well-suited for off-road driving and towing light loads. The automatic transmission’s gear ratios were optimized for fuel efficiency and low-speed crawling, rather than rapid acceleration. Compared to the gasoline-powered Trooper variants, the diesel offered significantly better fuel economy, but at the expense of outright speed. The manual transmission versions of the 2.2 TD provided a more engaging driving experience and slightly improved acceleration, but the automatic was favored by many buyers for its convenience. The soft top, while adding to the open-air experience, did contribute to increased wind noise and reduced structural rigidity compared to the hardtop models.
Equipment & Trim Levels
The Trooper Soft Top 2.2 TD (UBS52) was generally positioned as a mid-range trim level within the Trooper lineup. Standard equipment typically included basic features such as cloth upholstery, a simple dashboard layout, and manual windows and door locks. Air conditioning was often an optional extra, as were power steering and upgraded audio systems. The interior was functional and durable, designed to withstand the rigors of off-road use. The soft top itself was typically made of a durable vinyl material and could be easily removed for open-air driving. Trim levels varied depending on the market, with some regions offering more luxurious options such as leather upholstery and woodgrain interior trim. However, the focus remained on providing a practical and affordable SUV, rather than a luxury vehicle.
Chassis & Braking
The Trooper Soft Top 2.2 TD (UBS52) utilized a body-on-frame construction, a common design for SUVs of that era. The chassis was designed to provide durability and off-road capability. The suspension consisted of independent front suspension with coil springs and a live rear axle with leaf springs. This setup provided a comfortable ride on paved roads while also offering sufficient articulation for off-road driving. Braking systems varied depending on the market, but typically included front disc brakes and rear drum brakes. Stabilizer bars were often fitted to reduce body roll during cornering. The soft top version, due to its reduced structural rigidity, often benefited from additional chassis bracing to improve handling and safety.
Market Reception & Comparison
The Isuzu Trooper Soft Top 2.2 TD (UBS52) received generally positive reviews for its fuel efficiency, durability, and off-road capability. Critics praised the diesel engine’s torque and the vehicle’s ability to handle rough terrain. However, the engine’s modest power output and the automatic transmission’s slow shifting were often criticized. Compared to the gasoline-powered Trooper variants, the diesel offered superior fuel economy but lacked the same level of performance. Compared to competitors such as the Suzuki Samurai and the Mitsubishi Pajero, the Trooper offered a more spacious interior and a more comfortable ride. The soft top version was often seen as a niche product, appealing to buyers who prioritized open-air driving and a rugged aesthetic.
Legacy
The Isuzu Trooper, and particularly the first-generation models like the UBS52, have developed a loyal following among enthusiasts. The 4ZD1 diesel engine is known for its longevity and relatively simple maintenance requirements. While parts availability can be a challenge, the engine’s robust construction means that many examples are still on the road today. The Trooper Soft Top 2.2 TD (UBS52) remains a popular choice for off-road enthusiasts and those seeking a classic SUV with a unique character. In the used car market, these vehicles are often valued for their affordability and their ability to provide a reliable and capable driving experience. The Trooper’s legacy as a durable and versatile SUV continues to endure, making it a sought-after vehicle among collectors and enthusiasts alike.
