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- Harley-Davidson_Evolution_engine abstract "The Evolution engine (popularly known as Evo) is an air-cooled, 45-degree, V-twin engine manufactured from 1984 by Harley-Davidson for the company's motorcycles. It was made in the 1,340 cc (82 cu in) displacement for Harley Davidson Big V-twins bikes, replacing the Shovelhead engine until 2000 when the last EVO was placed in a production factory custom (FXR4). In 2001, it was replaced by the Harley-Davidson Twin Cam 88. It was made in the 1,100 cc (67 cu in) displacement until 1988 and is still made in the 883 cc (53.9 cu in) and 1,200 cc (73 cu in) displacements for the Harley-Davidson Sportster, replacing the ironhead Sportster engine.Most analysts consider the Evolution to be the engine that saved the reorganized Harley-Davidson company from certain bankruptcy. Harley-Davidson's official name for the engine was likely related to the company's attempt to reform its image following the 1981 management buyout from previous owner American Machine and Foundry (AMF).Though a major design advance for Harley-Davidson in many ways, the Evolution is most distinct from earlier Harley-Davidson engine designs by virtue of its reliability, oil tightness, and ability to be run hard under all kinds of circumstances for tens of thousands of miles farther than any of its predecessors. Both the heads and cylinders of the Evolution engine are made from aluminum to reduce weight compared to a cast iron design. Air cooling efficiency is improved as aluminum is a superior thermal conductor to cast iron. The use of aluminum for both heads and block reduces wear on the head gasket seals, compared to a combined cast iron and aluminum design which could induce stress on the head gasket seals as a result of different rates of expansion and contraction between dissimilar metals. The blocky rocker boxes (thus becoming nicknamed "block head"), aluminum heads and cylinders (also referred to as "jugs") are the only part of the Evolution engine that can be said to be essential; the Big Twin and Sportster incarnations of the Evolution are significantly different.".
- Harley-Davidson_Evolution_engine thumbnail Harley_V-twin_w_valvediagram.jpg?width=300.
- Harley-Davidson_Evolution_engine wikiPageExternalLink Evo.htm.
- Harley-Davidson_Evolution_engine wikiPageID "6202821".
- Harley-Davidson_Evolution_engine wikiPageRevisionID "603089107".
- Harley-Davidson_Evolution_engine hasPhotoCollection Harley-Davidson_Evolution_engine.
- Harley-Davidson_Evolution_engine originalResearch "December 2009".
- Harley-Davidson_Evolution_engine peacock "December 2009".
- Harley-Davidson_Evolution_engine refimprove "December 2009".
- Harley-Davidson_Evolution_engine subject Category:Harley-Davidson_engines.
- Harley-Davidson_Evolution_engine type Artifact100021939.
- Harley-Davidson_Evolution_engine type Device103183080.
- Harley-Davidson_Evolution_engine type Engine103287733.
- Harley-Davidson_Evolution_engine type Harley-DavidsonEngines.
- Harley-Davidson_Evolution_engine type Instrumentality103575240.
- Harley-Davidson_Evolution_engine type Machine103699975.
- Harley-Davidson_Evolution_engine type Motor103789946.
- Harley-Davidson_Evolution_engine type Object100002684.
- Harley-Davidson_Evolution_engine type PhysicalEntity100001930.
- Harley-Davidson_Evolution_engine type Whole100003553.
- Harley-Davidson_Evolution_engine comment "The Evolution engine (popularly known as Evo) is an air-cooled, 45-degree, V-twin engine manufactured from 1984 by Harley-Davidson for the company's motorcycles. It was made in the 1,340 cc (82 cu in) displacement for Harley Davidson Big V-twins bikes, replacing the Shovelhead engine until 2000 when the last EVO was placed in a production factory custom (FXR4). In 2001, it was replaced by the Harley-Davidson Twin Cam 88.".
- Harley-Davidson_Evolution_engine label "Harley-Davidson Evolution engine".
- Harley-Davidson_Evolution_engine label "Harley-Davidson Evolution".
- Harley-Davidson_Evolution_engine sameAs Harley-Davidson_Evolution.
- Harley-Davidson_Evolution_engine sameAs m.0fwk71.
- Harley-Davidson_Evolution_engine sameAs Q3379246.
- Harley-Davidson_Evolution_engine sameAs Q3379246.
- Harley-Davidson_Evolution_engine sameAs Harley-Davidson_Evolution_engine.
- Harley-Davidson_Evolution_engine wasDerivedFrom Harley-Davidson_Evolution_engine?oldid=603089107.
- Harley-Davidson_Evolution_engine depiction Harley_V-twin_w_valvediagram.jpg.
- Harley-Davidson_Evolution_engine isPrimaryTopicOf Harley-Davidson_Evolution_engine.
