page_title: Austin Twenty
section_title: Four-cylinder engine
hierarchical_section_title: Austin Twenty / Four-cylinder engine
caption_attribution_description: 1926 Austin Mayfair at Huddersfield
context_page_description: Austin Twenty is a large car introduced by Austin after the end of the First World War, in April 1919 and continued in production until 1930. After the Austin 20/6 model was introduced in 1927, the first model was referred to as the Austin 20/4.
  Before 1919 Austins had been expensive prestige cars. In the 1920s there were people who believed the four-cylinder Twenty comparable with if not superior to the equivalent Rolls-Royce. If the coachwork were light enough the Twenty could also give a three-litre Bentley a run for its money. The final inter-war version was the enormous, extremely elegant fast and powerful side-valve Twenty-Eight of 1939. The overhead-valve Sheerline and its companion Princess were to continue the line after the Second World War; however, by the 1930s Austin had lost its aristocratic cachet, having become well known for its Twelves and Sevens.
  The deceptively potent four-cylinder Twenty found fame at Brooklands both in private hands and with works drivers Lou Kings and Arthur Waite.
context_section_description: The engine with its 95 mm bore and 127 mm stroke had a cast-iron cylinder block with detachable cylinder head mounted on top of an aluminium crankcase. It developed 45 bhp at 2000 rpm. As an advance on pre-war practice, the engine was directly bolted to the four-speed centre-change gearbox, which drove the rear wheels through an open propeller shaft.
caption: Mayfair limousine 3.6-litre 1926
  with aftermarket bumper
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