This 1956 Ariel Square 4 features a matching Garrard sidecar (stocked with Champagne!). If you take a quick glance at this Ariel, you might notice something doesn’t quite look right. This is because tt the heart of the Ariel is a 997cc square-four engine, or “Squariel”, which was designed in 1936 by the unemployed engine designer Edward Turner.
Turner’s 997cc four-cylinder motor has twin camshafts, which made for low-speed tractability, and punchy acceleration all the way up to its top speed of 100mph. In 1953, the motor’s porting and plumbing were revised for the Mark II edition, which continued to be used until 1959.
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