02/08/2022
In the annals of motorcycling history, few machines command the reverence and influence of the Honda CB750. It’s not merely a motorcycle; it is a turning point, a paradigm shift that irrevocably altered what riders expected from their two-wheeled companions. Before the CB750 burst onto the scene, the choice was stark: you could opt for a smaller, often underpowered but generally reliable Japanese bike, or you could choose a larger, faster, yet notoriously temperamental and often unreliable machine, typically from European or American manufacturers. The Honda CB750 elegantly, and powerfully, bridged this chasm, delivering a blend of speed, sophistication, and, crucially, rock-solid dependability that had previously been unimaginable. Its impact was so profound that it’s no exaggeration to say the world of motorcycling was never the same again.
The Genesis of a Legend: When Did the CB750 Arrive?
The eagerly anticipated Honda CB750 made its grand debut in 1969, marking a pivotal moment not just for Honda, but for the entire motorcycle industry. This was the year that the world was introduced to a machine that would quickly earn the moniker 'superbike'. The initial series of CB750s, often referred to as the 'sandcast' models due to their distinctive engine cases, were indeed produced with permanent mould casting. This manufacturing method was chosen by Honda due to an understandable degree of uncertainty regarding the sheer volume of orders the bike would receive. While these early engines possess a unique charm and historical significance, making them highly desirable among collectors and vintage motorcycle enthusiasts, it's worth noting that this casting method meant they weren't always as perfectly finished or as robustly consistent as the later, die-cast production models. Nevertheless, these early bikes, despite their minor quirks, laid the foundation for a legacy that would span decades and inspire countless imitations.
SOHC vs. DOHC: Understanding the CB750 Variants
The Honda CB750's illustrious production run saw two primary engine configurations, each with its own characteristics and fan base: the Single Overhead Camshaft (SOHC) and the Double Overhead Camshaft (DOHC) models. Understanding the distinctions between these two generations is key to appreciating the evolution of this iconic motorcycle.
The SOHC (Single Overhead Camshaft) production run represents the original and, for many purists, the definitive CB750. These bikes were built between 1969 and 1978. Characterised by their air-cooled, transverse-mounted four-cylinder engine with a single camshaft operating all sixteen valves, these machines were a revelation in their time. They offered a smooth, powerful, and remarkably reliable riding experience that set new benchmarks for performance motorcycles. Their distinctive chrome fenders, upright riding position, and classic styling have ensured their enduring appeal, making them highly sought-after classics today.
Following the SOHC era, the DOHC (Double Overhead Camshaft) CB750s took centre stage. Produced between 1979 and 2003, these models saw a significant redesign, most notably the switch to a double overhead camshaft engine. This change allowed for more precise valve timing and higher revving capabilities, contributing to a more modern performance profile. The DOHC models were produced in vast numbers and, consequently, are by far the most common model variant you'll encounter on the street today. While they may lack some of the 'originality' cachet of their SOHC predecessors, they are still exceptionally capable and reliable motorcycles, offering a more contemporary riding experience and often proving more accessible for everyday use and maintenance due to their sheer numbers.
To illustrate the key differences, consider the following comparison:
| Feature | SOHC CB750 (1969-1978) | DOHC CB750 (1979-2003) |
|---|---|---|
| Engine Type | Single Overhead Camshaft | Double Overhead Camshaft |
| Production Years | 1969 - 1978 | 1979 - 2003 |
| Valve Operation | Single cam operates all valves | Two cams operate valves independently |
| Design Aesthetic | Classic, more rounded, often chrome-heavy | More angular, modern, less chrome |
| Collector Desirability | Highly desirable, especially early 'sandcast' models | More common, still popular but less 'collectible' |
| Performance Focus | Smooth, reliable power delivery for its era | Higher revving, more modern power delivery |
| Availability of Parts | Good, but some SOHC-specific parts can be rarer | Excellent due to much larger production numbers |
Why the CB750 Was a Game-Changer
The true significance of the Honda CB750 extends far beyond its technical specifications or its production numbers. It was a motorcycle that fundamentally reshaped the global market. Prior to its arrival, the landscape was fragmented. Riders either endured the often-fickle nature of large, powerful British or American motorcycles, which, while thrilling, were frequently plagued by oil leaks, electrical gremlins, and questionable reliability, or they settled for the smaller, more utilitarian Japanese bikes that were dependable but lacked the exhilarating performance many craved. The CB750 shattered this dichotomy. It delivered a powerful 750cc inline-four engine capable of impressive speeds, yet it did so with a level of unprecedented reliability and refinement that astounded the industry. Riders could now enjoy thrilling performance without the constant worry of breakdowns or extensive maintenance. This combination of speed, sophistication, and reliability forced every other motorcycle manufacturer back to the drawing board, ushering in the 'Universal Japanese Motorcycle' (UJM) era, where competitors scrambled to emulate Honda's success. The CB750 wasn't just a bike; it was a statement of intent, proving that mass-produced motorcycles could be both exhilarating and utterly dependable.
The Enduring Appeal: Collectors and Enthusiasts
Decades after its initial launch, the Honda CB750 continues to captivate the hearts of collectors and enthusiasts worldwide. Its iconic status means that even now, these machines are highly sought after. The early SOHC models, particularly the very first 'sandcast' examples, command premium prices due to their historical significance and rarity. Their distinct engine cases, a direct result of Honda's initial production uncertainties, make them instantly recognisable and a badge of honour for any serious collector. Beyond their investment potential, the CB750's enduring appeal lies in its rideability. These bikes, even today, offer a remarkably engaging and comfortable experience, making them perfect for weekend rides, classic rallies, or simply as a cherished display piece. The sheer volume of production, especially for the DOHC models, also means there's a thriving community around these bikes, with clubs, forums, and events dedicated to their preservation and enjoyment. This strong community further fuels their collectibility and ensures that parts and knowledge remain readily available.
Maintaining Your CB750: Keeping the Icon Alive
Owning a classic Honda CB750, whether an early SOHC or a later DOHC, is a rewarding experience, but it also comes with the responsibility of maintenance. While these bikes are renowned for their reliability, they are still machines from a bygone era and require regular care to keep them running smoothly and safely. Fortunately, the popularity and vast production numbers of the CB750 mean that parts availability is generally excellent. Many specialist suppliers offer a wide selection of components to help you resurrect and maintain your Honda CB750. You can readily find essential items such as engine gasket sets, crucial for preventing leaks and maintaining engine integrity, and carburetor kits, vital for ensuring optimal fuel delivery and smooth running. Fork seals, levers, cables, and brake pads are also commonly available, allowing owners to address wear-and-tear items and ensure the bike's safety and performance. The robust design of the CB750 means that with diligent maintenance, these motorcycles can continue to provide reliable service for many more decades. Regular oil changes, valve clearance checks, chain adjustments, and keeping an eye on electrical connections are all part of the routine that keeps these legends on the road. Don't be afraid to delve into the mechanics; the CB750's relatively straightforward design makes it an excellent platform for home mechanics to learn and develop their skills.
Customising Your CB750: Beyond Originality
While many enthusiasts cherish the original factory look of their CB750s, the bike's robust frame, powerful engine, and simple architecture have also made it an incredibly popular platform for customisation. Its adaptability means that almost any machine can be transformed into a unique expression of its owner's style. The CB750 is a common donor bike for a wide array of traditional custom styles, each offering a distinct aesthetic and riding experience:
- Cafe Racer: Characterised by clip-on handlebars, rear-set footpegs, a distinctive humped seat, and minimalist bodywork, designed to evoke the spirit of 1960s British racing. The CB750's inline-four engine provides the perfect power plant for this aggressive, performance-oriented look.
- Street Tracker: Drawing inspiration from flat-track racing, these builds typically feature wide handlebars, a flat, narrow seat, and a stripped-down appearance. They often have high-mounted exhausts and knobbly tyres, giving them an aggressive, off-road ready stance, even if they never leave the tarmac.
- Brat Style: A Japanese-influenced customisation style that prioritises simplicity, low ride height, and a raw, stripped-back aesthetic. Brat bikes often feature a flat, minimalist seat, wide handlebars, and a generally uncluttered look, focusing on the essential elements of the motorcycle.
- Chopper: Perhaps the most radical transformation, choppers involve extending the front forks, raking the steering head, and often feature custom frames, high handlebars ('ape hangers'), and elaborate paint schemes. While less common with CB750s than with V-twin engines, the reliable Honda engine can certainly be the heart of a unique chopper build.
The vast aftermarket support for the CB750 means that a wide selection of parts is available to retrofit almost any beast into these traditional styles. Whether you're looking for a new tank, seat, exhaust system, or suspension components, the options are plentiful, allowing owners to truly personalise their ride and create a one-of-a-kind machine that stands out from the crowd.
Frequently Asked Questions (FAQs)
Q: Is the Honda CB750 reliable?
A: Yes, the Honda CB750 is renowned for its reliability, especially for a motorcycle of its era. It set new standards for dependability when it was launched and remains a testament to Honda's engineering prowess. With proper maintenance, these bikes can run for many decades.
Q: What's the main difference between SOHC and DOHC CB750s?
A: The primary difference lies in their engine architecture. SOHC (Single Overhead Camshaft) models (1969-1978) have one camshaft operating all valves. DOHC (Double Overhead Camshaft) models (1979-2003) have two camshafts, allowing for more precise valve control and generally higher performance characteristics. The DOHC models are also far more numerous.
Q: Are early CB750s worth more?
A: Generally, yes. The very first SOHC models, particularly the 'sandcast' engines from 1969-1970, are highly sought after by collectors due to their rarity and historical significance, commanding premium prices. Later SOHC models are also more desirable than the DOHC variants for collectors.
Q: Can I still get parts for a Honda CB750?
A: Absolutely. Due to the immense popularity and large production numbers of the CB750, there's a thriving aftermarket for parts. Many specialist suppliers offer a wide range of new and used components, from engine internals to cosmetic pieces, making maintenance and restoration very feasible.
Q: Why is the Honda CB750 considered so important?
A: The CB750 is considered the first 'superbike' and a true game-changer. It combined high performance and speed with unprecedented Japanese reliability and affordability. It forced other manufacturers to innovate, effectively ending the dominance of British and American large-capacity motorcycles and ushering in the modern era of performance motorcycling.
Conclusion
The Honda CB750 stands as a towering monument in the history of motorcycling. From its groundbreaking introduction in 1969, it shattered preconceived notions of what a motorcycle could be, delivering a powerful, reliable, and sophisticated package that redefined an entire industry. Whether you're drawn to the classic lines of the original SOHC models or the more modern performance of the DOHC variants, the CB750 offers a rich tapestry of history, engineering excellence, and riding pleasure. Its legacy is not just in the millions of units sold, but in the countless riders it inspired and the competitive landscape it irrevocably transformed. It is, without hyperbole, one of the most significant motorcycles ever made, and its roar continues to echo through the decades, a testament to enduring innovation and timeless design.
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