Search results
Results from the WOW.Com Content Network
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). [2] Both the heads and cylinders of the Evolution engine are made from aluminum to reduce weight compared to a cast iron design.
Harley-Davidson KHK The ironhead was a Harley-Davidson motorcycle engine , so named because of the composition of the cylinder heads (Iron instead of Aluminium). The engine is a two-cylinder, two valves per cylinder, pushrod V-twin .
The original price for the 16 hp (12 kW) version was $70 lower (at US$228) than their single-cylinder cast-iron version bearing the same power rating. [ 18 ] Industrial/Commercial (I/C) – This series of engines, initially ranging from 3 to 20.5 hp (15.3 kW), was introduced in 1979 as Briggs & Stratton's answer to high quality commercial-duty ...
Harley-Davidson was slow to capitalize on this demand, finally introducing the Sportster XR-1000 street bike for the 1983 model year, 13 years after the XR-750 racer. The XR-1000 used XR-750 heads, but kept the Sportster engine, frame and other equipment. [ 10 ]
2010 Harley-Davidson XR1200 Sportster. In the 2008 model year, Harley-Davidson released the XR1200 Sportster in Europe, Africa, and the Middle East. The XR1200 had an Evolution engine tuned to produce 91 bhp (68 kW), four-piston dual front disc brakes, and an aluminum swing arm.
The first year of Sportster, a development of the KH with overhead-valve engines and cast iron heads. The engine was updated after 29 years. [3] XR-750: 46 cu in (750 cc) 1970–1985 Overhead-valve engines, iron heads (1970–1971), alloy heads (1972–1985) XLCR: 61 cu in (1,000 cc) 1977–1978
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 ...
Cylinder head porting refers to the process of modifying the intake and exhaust ports of an internal combustion engine to improve their air flow. Cylinder heads, as manufactured, are usually suboptimal for racing applications due to being designed for maximum durability. Ports can be modified for maximum power, minimum fuel consumption, or a ...