1981-1985 Alpina B9 (E28) 3.0 (245 Hp)

The Alpina B9 3.0 (E28), produced between 1981 and 1985, represents a high-performance variant of the BMW E28 5 Series. Alpina, a renowned German automotive engineering company, meticulously refined the 5 Series platform to create a vehicle that blended luxury, performance, and exclusivity. The B9 3.0 was positioned as Alpina’s flagship sedan during this period, offering a significant step up in power and refinement compared to the standard BMW 5 Series models. It wasn’t simply a modified BMW; Alpina vehicles were independently registered and VIN-numbered, establishing them as unique automobiles. The E28 B9 3.0 is highly regarded by enthusiasts for its robust build quality, engaging driving experience, and relative rarity.

Technical Specifications

Powertrain & Engine Architecture

The heart of the Alpina B9 3.0 is its 3.0-liter inline-six cylinder engine, based on the BMW M30 engine block. However, Alpina didn’t simply drop a larger engine into the E28. Extensive modifications were made to enhance performance and durability. These included a lightened and balanced crankshaft, high-compression pistons, a performance camshaft, and a ported cylinder head. The engine featured Bosch K-Jetronic fuel injection, a mechanical fuel injection system known for its reliability and precise fuel delivery. This system, while not as sophisticated as later electronic fuel injection systems, provided consistent performance and was relatively easy to maintain. The engine produced 245 horsepower and approximately 295 lb-ft of torque.

Unlike standard BMWs of the era, the B9 3.0 was exclusively offered with a 5-speed manual transmission, a Getrag 265. Alpina deemed the manual transmission essential for fully exploiting the engine’s power and providing a more engaging driving experience. The rear axle ratio was also optimized for performance, contributing to the car’s impressive acceleration. The exhaust system was a bespoke Alpina design, featuring stainless steel construction and a free-flowing design to minimize backpressure and enhance the engine’s sound.

Driving Characteristics

The Alpina B9 3.0 delivers a driving experience that is both refined and exhilarating. The 3.0-liter engine provides strong, linear power throughout the rev range. Acceleration is brisk, with 0 to 60 mph times estimated around 6.5 seconds – a remarkable figure for a sedan in the early 1980s. The 5-speed manual transmission is precise and offers a satisfying mechanical feel. The suspension, while based on the E28 5 Series design, was modified by Alpina with stiffer springs, Bilstein shock absorbers, and larger anti-roll bars. This resulted in reduced body roll and improved handling, without sacrificing ride comfort. The steering is precise and provides good feedback, allowing the driver to confidently navigate winding roads. The B9 3.0 feels planted and stable at high speeds, inspiring confidence in its driver.

Compared to the standard BMW 5 Series, the B9 3.0 offers a significantly more engaging and dynamic driving experience. The increased power and improved handling make it a true driver’s car. While the standard 5 Series models focused on comfort and practicality, the B9 3.0 prioritized performance and driving pleasure.

Equipment & Trim Levels

The Alpina B9 3.0 was a luxury performance sedan, and its interior reflected this. Standard features included Recaro sport seats upholstered in high-quality leather, a three-spoke Alpina steering wheel, and a comprehensive instrument cluster with additional gauges for oil temperature, oil pressure, and voltmeter. The interior trim was typically finished in wood veneer, adding a touch of elegance. Alpina also offered a range of optional extras, including a sunroof, air conditioning, and a premium sound system. Each B9 3.0 was largely customized to the buyer’s specifications, making each car unique.

Exterior features included Alpina-specific front and rear spoilers, unique alloy wheels (typically 16-inch), and subtle Alpina badging. The exterior trim was generally understated, reflecting Alpina’s philosophy of enhancing performance without resorting to excessive visual modifications.

Chassis & Braking

The B9 3.0 utilized the E28 5 Series chassis, but with several key modifications. As mentioned previously, the suspension was upgraded with stiffer springs, Bilstein shock absorbers, and larger anti-roll bars. This improved handling and reduced body roll. The braking system consisted of ventilated disc brakes on all four wheels, providing ample stopping power. Alpina also upgraded the brake lines and pads for improved performance and fade resistance. The wheels were typically 7.5 x 16 inch Alpina alloys, fitted with high-performance tires.

Market Reception & Comparison

The Alpina B9 3.0 was well-received by automotive journalists and enthusiasts alike. It was praised for its blend of performance, luxury, and exclusivity. Critics noted the car’s strong engine, precise handling, and comfortable ride. Compared to other high-performance sedans of the era, such as the Porsche 911, the B9 3.0 offered a more practical and comfortable driving experience. However, it was also more expensive than most of its competitors.

Compared to other Alpina variants, such as the B7 Turbo, the B9 3.0 offered a more balanced and accessible performance experience. The B7 Turbo was significantly more powerful but also more demanding to drive. The B9 3.0 was considered a more refined and user-friendly option for those seeking a high-performance sedan.

Legacy

The Alpina B9 3.0 (E28) remains a highly sought-after classic car today. Its robust build quality and relatively simple mechanical design contribute to its long-term reliability. While maintenance can be expensive due to the car’s age and the availability of parts, the B9 3.0 is generally considered a reliable and durable vehicle. Values have steadily increased in recent years, reflecting the car’s rarity and desirability. The B9 3.0 represents a significant chapter in Alpina’s history and remains a testament to the company’s commitment to creating exceptional automobiles. It’s a car that continues to provide an engaging and rewarding driving experience for enthusiasts around the world.