What is the engine displacement of the 1958 Ariel MK 2 Square Four?

The 1958 Ariel MK 2 Square Four has an engine displacement of 997.0 ccm (60.84 cubic inches).

1958 Ariel MK 2 Square Four Price, Specs, Review

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Review

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The 1958 Ariel MK 2 Square Four is equipped with a 997cc square four-cylinder engine, a design intended to deliver smooth power and a distinctive sound. It has a fuel tank capacity of 6.08 US gallons, providing a decent range for touring. The motorcycle's design reflects the late 1950s aesthetic, characterized by a classic and elegant appearance. The braking system utilizes expanding drum brakes on the front wheel, a standard braking technology for motorcycles of this era. The MK 2 Square Four represents a particular point in motorcycle engineering history, showcasing a unique approach to engine design and overall construction. This Ariel is likely to appeal to collectors and enthusiasts who value innovative engine designs and classic motorcycle styling. Its distinctive engine configuration and appearance make it a noteworthy model for those interested in the history of British motorcycle manufacturing and the evolution of engine technology. The MK 2 Square Four embodies a blend of engineering innovation and timeless design principles.

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Pros (Advantages)

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✅ Why buy this bike?

• Unique and sophisticated Square Four engine design offers exceptional smoothness and balance for its era. • Powerful 997cc engine provides ample torque and cruising ability, making it suitable for long-distance touring. • Distinctive exhaust note and imposing presence attract significant attention and admiration from enthusiasts. • High build quality and robust construction ensure longevity and reliability if properly maintained. • Significant historical value and rarity make it a highly desirable collector's item with appreciating value. • Comfortable riding position and effective suspension for a 1950s motorcycle, enhancing rider enjoyment.

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Cons (Disadvantages)

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⚠️ Things to consider

• Complex engine design makes maintenance and repairs challenging, requiring specialized knowledge and tools. • Heavy weight and long wheelbase can make low-speed maneuvering and parking cumbersome. • Original braking system, while adequate for its time, is modest by modern standards, requiring careful planning. • Parts availability can be a significant issue, often requiring custom fabrication or lengthy searches. • Fuel consumption is relatively high compared to contemporary motorcycles, impacting running costs. • Prone to overheating in congested traffic due to its large, air-cooled engine design.

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License Class (EU)

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Rule of thumb: under 125cc / 15HP → A1, under 47HP → A2, above → A.

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Fuel Economy & Running Costs

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Estimated average for 997cc class: 35-50 mpg (5.0-7.0 L/100km)

⛽ Tank: 23.00 litres (6.08 US gallons)

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Insurance Class

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