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Harley-Davidson Evolution engine at the Harley-Davidson Museum. The Evolution engine (popularly known as Evo and sometimes as Blockhead ) is an air-cooled, 45-degree, V-twin engine manufactured from 1984 by Harley-Davidson for the company's motorcycles.
Harley-Davidson engines are now made at Harley-Davidson Motor Company's Pilgrim Road Powertrain Operations facility in Menomonee Falls, Wisconsin. The company's founders started making smaller flathead motorcycle engines individually by hand and fitted to bicycles in the 10 ft x 15 ft wooden barn in Milwaukee that was the Harley-Davidson ...
1947 Harley-Davidson mod. WL 739 cc engine Harley-Davidson 45° V-twin, Sportster Evolution engine. Sportster motorcycles are powered by a four-stroke, 45° V-twin engine in which both connecting rods, of the "fork and blade" or "knife & fork" design, share a common crank pin.
Harley-Davidson Twin Cam engine at the Harley-Davidson Museum. The Harley-Davidson Twin Cam are motorcycle engines made by Harley-Davidson from 1998 to 2017. Although these engines differed significantly from the Evolution engine, which in turn was derived from the series of single camshaft, overhead valve motors that were first released in 1936, they share a number of characteristics with ...
Harley-Davidson, Inc. (H-D, or simply Harley) is an American motorcycle manufacturer headquartered in Milwaukee, Wisconsin, United States.Founded in 1903, it is one of two major American motorcycle manufacturers to survive the Great Depression along with its historical rival, Indian Motorcycles. [3]
In addition, Harley had just completed the "buy back" from AMF, and had developed the all-aluminium Harley-Davidson Evolution engine that was more reliable that the Shovelhead, and had heads that looked like square versions of the round Panheads. It was first offered in the Softail, and helped making it a success.
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Street model using XR racing cylinder head and other XR engine parts. XL, Evolution, "EVO" 53.9 cu in (883 cc), 1,100 cc (6.1 cu in) (1986–1987), 73 cu in (1,200 cc) (1988–) 1986–2022 The first year of the new Sportster to have the Evolution overhead-valve engine, alloy heads XL883N, Iron: 53.9 cu in (883 cc) 2009–2022