1973-1975 DAF 66 1300 MARATHON (57 Hp)

The DAF 66 1300 Marathon, produced between 1973 and 1975, represents a significant iteration of the DAF 66 model line. Positioned as a practical and economical sedan, the 1300 Marathon offered a balance between affordability and usability within the Dutch automotive market. It was a key part of DAF’s strategy to provide accessible transportation during a period of economic change. The DAF 66, as a whole, was notable for its innovative Variomatic continuously variable transmission, a feature that defined the car and set it apart from its contemporaries. The Marathon trim, specifically with its 1300cc engine producing 57 horsepower, aimed to provide a reliable and fuel-efficient option for everyday drivers.

Technical Specifications

Powertrain & Engine Architecture

The heart of the DAF 66 1300 Marathon is a 1289cc, inline-four cylinder petrol engine. This engine, while relatively modest in output at 57 horsepower, was designed for durability and fuel efficiency. It featured a single overhead camshaft (SOHC) valvetrain, operating two valves per cylinder. The engine utilized a Solex carburetor for fuel delivery, a common setup for European cars of the era. The Marathon’s engine wasn’t particularly advanced in terms of technology; it prioritized simplicity and ease of maintenance. The engine block was cast iron, contributing to its robustness, while the cylinder head was aluminum to help reduce weight.

However, the defining characteristic of the DAF 66 wasn’t the engine itself, but the transmission. The 66 exclusively used DAF’s innovative Variomatic transmission – a belt-driven, continuously variable transmission (CVT). This system eliminated the need for traditional gears, offering a smooth, stepless acceleration. The Variomatic used two pulleys connected by a V-belt. The effective gear ratio was altered by changing the diameter of the pulleys, controlled by hydraulic pressure. While offering a unique driving experience, the Variomatic was known for its distinctive whine and required specific maintenance procedures, including regular belt replacement.

Driving Characteristics

The DAF 66 1300 Marathon’s driving experience was heavily influenced by the Variomatic transmission. Acceleration was smooth and linear, but not particularly brisk. The 57 horsepower engine, coupled with the CVT, meant that the car prioritized fuel economy over outright performance. The lack of fixed gear ratios meant that the engine often operated at a relatively constant RPM, which some drivers found unusual. The car wasn’t designed for spirited driving or quick overtaking maneuvers. Instead, it excelled in urban environments and on longer journeys where consistent speed was more important than rapid acceleration. The Variomatic, while smooth, did exhibit some rubber-band effect, where engine RPM would rise before corresponding road speed increased. Handling was adequate for its intended purpose, but the car wasn’t particularly sporty. The suspension was tuned for comfort, providing a relatively soft ride.

Equipment & Trim Levels

The DAF 66 1300 Marathon was positioned as a mid-range trim level within the 66 lineup. Standard equipment included cloth upholstery, basic instrumentation (speedometer, fuel gauge, temperature gauge), and a heater. The interior was functional and utilitarian, reflecting the car’s focus on practicality. The Marathon trim typically included a slightly upgraded interior finish compared to the base model, with improved seat materials and door panels. Optional extras included a radio, whitewall tires, and a sunroof. The dashboard layout was simple and straightforward, with all controls within easy reach of the driver. The car featured manually operated windows and door locks. Safety features were limited by the standards of the time, with seatbelts being the primary safety equipment.

Chassis & Braking

The DAF 66 1300 Marathon utilized a monocoque chassis construction, providing a reasonable level of structural rigidity. The front suspension consisted of independent coil springs and wishbones, while the rear suspension employed a trailing arm setup with coil springs. The braking system was hydraulic, with drum brakes on all four wheels. The drum brakes were adequate for the car’s weight and performance, but lacked the stopping power of disc brakes. Steering was rack and pinion, providing reasonably precise control. The car’s relatively light weight (around 950 kg or 2094 lbs) helped to offset the limitations of the braking system and the modest engine power.

Market Reception & Comparison

The DAF 66 1300 Marathon received mixed reviews from automotive critics. The Variomatic transmission was often praised for its smoothness and ease of use, but also criticized for its lack of responsiveness and distinctive whine. The engine was considered adequate for everyday driving, but lacked the power of larger-engined competitors. Fuel economy was a strong point, making the car attractive to budget-conscious buyers. Compared to other cars in its class, such as the Volkswagen Beetle or the Ford Escort, the DAF 66 offered a unique driving experience thanks to the Variomatic. However, it lacked the established reputation and widespread dealer network of its rivals. The Marathon trim offered a good balance of features and affordability, making it a popular choice for families and commuters.

Legacy

The DAF 66, and particularly the 1300 Marathon variant, holds a unique place in automotive history due to its innovative Variomatic transmission. While DAF as a company ultimately faced financial difficulties and was later absorbed into Volvo, the Variomatic technology paved the way for the widespread adoption of CVT transmissions in modern vehicles. Today, the DAF 66 is a sought-after classic car, particularly among enthusiasts who appreciate its quirky engineering and distinctive design. The 1300 Marathon, being a relatively common variant, is generally more affordable than some of the rarer DAF models. Reliability can be an issue with older examples, particularly with the Variomatic transmission, which requires specialized knowledge and parts for maintenance. However, a well-maintained DAF 66 1300 Marathon can provide a charming and unique driving experience, offering a glimpse into a bygone era of automotive innovation.