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The need for a new engine was recognised by Rolls-Royce in the early 1950s and its development began in 1952, bearing no relation to the 1905 Rolls-Royce V8. The result was a series of V8 engines known as the L series, more specifically the "L410" for its bore size of 4.1 in (104.14 mm), in keeping with company practice.
Rolls-Royce purchased Bentley in 1931 and the new engine was intended for use in both Rolls-Royce and Bentley automobiles. The result was a series of V8 engines known internally as the "L410", the name relating to its bore size of 4.10 inches, in accordance with the company practice.
The problems of Bentley's owner with Rolls-Royce aero engine development, the RB211, brought about the financial collapse of its business in 1970. The motorcar division was made a separate business, Rolls-Royce Motors Limited, which remained independent until bought by Vickers plc in August 1980.
The company confirmed that just a handful of build slots remain before the company's 12-cylinder power plant is discontinued for good.
The luxury car firm said production of the W12 will cease in April next year after more than 100,000 have been produced at its factory in Crewe.
More than 100,000 examples of the W12 engine have been built at the company’s factory in Crewe, Cheshire over the past 20 years.
The Final Series also marked the 50th anniversary of Bentley's V8 engine. The 2009 variant of the engine was still loosely based on the same design that was introduced in the 1959 Bentley S2. However, the updated engine in 2008 shares no interchangeable parts with the 1950 model, the last common item having been replaced in 2005.
[3] [4] The engine retained the Clerget’s signature offset epicyclical cam gears with separate pushrods for the intake and exhaust. In common with many other late war rotary engines, the new engine had two spark plugs per cylinder. [4] The engine was initially known as the A.R.1 for "Admiralty Rotary", but later called the BR.1 ("Bentley ...