30/11/2009
The Pinnacle of BMW Engineering: Unveiling the 850CSi
The BMW 8 Series, particularly the E31 generation, represents a high watermark in automotive design and engineering. Among its ranks, the 850CSi stands as a true titan, a car that embodies raw power, sophisticated luxury, and an uncompromising driving experience. This article delves into the heart of what made the 850CSi so special, focusing on its formidable engine, its place in automotive history, and the characteristics that continue to make it a sought-after classic.
A Heart of Pure Power: The S70B56 Engine
At the very core of the BMW 850CSi's exceptional performance lies its magnificent engine. Unlike its predecessor, the 850i, the 850CSi received a significantly enhanced powerplant, bearing the engine code S70B56. This wasn't just a minor tweak; it was a comprehensive overhaul designed to extract every ounce of performance from BMW's already impressive V12 architecture.
The S70B56 is a naturally aspirated, 60-valve, 48-valve V12 engine. BMW engineers meticulously tuned this behemoth, increasing its capacity to 5,576 cc (approximately 5.6 litres). This enlargement, coupled with advanced Bosch Motronic 1.7 fuel injection, allowed the V12 to breathe more freely and deliver exhilarating power. The result was a staggering output of 280 kW (381 PS; 375 hp) at 5,300 rpm and a substantial 550 N⋅m (406 lbf⋅ft) of torque, available from 4,000 rpm. These figures were enough to propel the luxurious coupe to a claimed top speed of 150 mph, a remarkable feat for a car of its size and era.
Key Engine Specifications: S70B56
| Specification | Details |
|---|---|
| Engine Code | S70B56 |
| Type | V12, Naturally Aspirated |
| Capacity | 5,576 cc (5.6 L) |
| Valves | 48 |
| Fuel Injection | Bosch Motronic 1.7 |
| Power Output | 381 PS (375 hp) at 5,300 rpm |
| Torque Output | 550 N⋅m (406 lbf⋅ft) at 4,000 rpm |
| Performance Claim | 0-60 mph in approximately 6 seconds (Varies by source and configuration) |
| Top Speed Claim | 150 mph (electronically limited in some versions) |
The E31 Generation: A Design Masterpiece
The BMW 8 Series, designated as the E31, was produced from 1989 to 1999, with the 850CSi being a key, high-performance variant. The 850CSi, specifically, was manufactured between 1992 and 1996. This generation of the 8 Series was a departure from BMW's previous offerings, boasting a sleek, aerodynamic silhouette that remains timeless. Its distinctive pop-up headlights, long bonnet, and sculpted lines gave it an aggressive yet elegant presence on the road. The 850CSi, in particular, exuded an aura of exclusivity and performance, setting it apart from its siblings.
The body of the 850CSi was a marvel of design, emphasizing both aesthetics and aerodynamic efficiency. While only the head- and taillights are often mentioned as being original in some custom builds, the core chassis, transmission, and engine of the 850CSi are what define its authentic performance. Grafting this unique body onto the 850CSi's robust platform resulted in a car that was not only visually striking but also dynamically capable.
Driving the Legend: The 850CSi Experience
Owning and driving a BMW 850CSi is an experience that transcends mere transportation. It's about connecting with a piece of automotive history that offers a blend of blistering performance and refined luxury. The V12 engine provides a smooth, powerful delivery of torque, making acceleration effortless and refined. The sound of the V12 is a symphony, a deep, resonant growl that hints at the immense power lurking beneath the bonnet.
The handling of the 850CSi is also a testament to BMW's engineering prowess. Despite its size and V12 powerplant, the car is surprisingly agile, thanks to a well-tuned suspension and a balanced chassis. It offers a commanding driving position, with a driver-focused cockpit that envelops the occupants in premium materials and cutting-edge (for its time) technology. The long wheelbase contributes to its stability at high speeds, making it an exceptional grand tourer.
Where Can You Find a Used BMW 850CSi?
The BMW 850CSi is a rare and desirable classic, meaning finding one requires patience and a keen eye. These vehicles are not typically found on mainstream used car forecourts. Instead, enthusiasts often seek them out through:
- Specialist Classic Car Dealers: Many dealers focus on high-performance and luxury European marques, including BMW. These specialists often have well-maintained examples and provide valuable expertise.
- Online Classic Car Marketplaces: Websites dedicated to classic and performance cars are excellent resources. Here, you can often find detailed listings with extensive history and photographs.
- BMW Enthusiast Forums and Clubs: These communities are invaluable for connecting with owners who may be looking to sell their vehicles or know of others who are. Word-of-mouth is often a powerful tool in the classic car world.
- Auctions: Both online and physical auctions can be a source for the 850CSi, though prices can fluctuate significantly depending on the vehicle's condition and provenance.
When shopping for a used 850CSi, it is absolutely crucial to conduct thorough due diligence. Given its age and complexity, a comprehensive pre-purchase inspection by a mechanic experienced with BMW V12 engines is highly recommended. Check for service history, evidence of rust, and the condition of the electronics, as these can be costly to repair.
Frequently Asked Questions about the BMW 850CSi
What is the engine code for the BMW 850CSi?
The BMW 850CSi uses the engine code S70B56. This signifies a 5.6-litre version of BMW's V12 engine, significantly upgraded from the 850i's M70 engine.
What year is the BMW 8 Series 850CSi?
The BMW 850CSi was produced from 1992 to 1996. It is part of the E31 generation of the 8 Series.
What makes the 850CSi different from the 850i?
The primary difference lies in the engine. The 850CSi features the more powerful S70B56 V12 engine with increased capacity and output (375 hp vs. 300 hp for the 850i), along with chassis and suspension enhancements to match the increased performance.
Is the BMW 850CSi a V12?
Yes, the BMW 850CSi is powered by a 5.6-litre V12 engine.
What is the top speed of a BMW 850CSi?
The claimed top speed for the BMW 850CSi is approximately 150 mph, though some sources suggest it could achieve higher speeds if derestricted.
Conclusion: An Enduring Legacy
The BMW 850CSi remains an automotive icon, a car that perfectly blended performance, luxury, and avant-garde design. Its powerful S70B56 V12 engine, distinctive styling, and the sheer presence it commands ensure its place in the annals of automotive history. For those seeking a truly special driving machine, a classic that offers an unparalleled V12 experience, the 850CSi continues to be a compelling and rewarding choice.
If you want to read more articles similar to BMW 850CSi: The Ultimate V12, you can visit the Automotive category.