Do Sportsters have Evo engines?
Evolution on the Sportster The unit construction of the Harley-Davidson Sportster, which has essentially been unchanged since its inception as the side-valve 750cc “K” Model in 1952, was retained with the Evolution engine upgrade in 1986, resulting in a unique valve train configuration.
What year Sportsters have Evo engines?
1986
Evolution in the Sportster In 1986, Harley-Davidson upgraded the Sportster with the newly designed Evo engine, replacing the Ironhead that had become a staple of the Sportster since its inception.
What’s the difference between a Sportster Evo and an Evo?
There are few differences in the construction of the 883 and 1200 cc Sportster Evo engines, the main one being a smaller bore on the 883 cc version.
What’s the difference between 883 and 1200 Sportster engines?
It simply has larger bores; approximately 3.5 inches to the approximate 3 inch bore of the 883. Simply put, the 1200 Sportster engine has a bit more material and weighs slightly more than the 883 engine; the difference in weight is too small though to make a significant effect on performance.
Can a Harley Davidson 1200 Sportster be modified?
The Harley-Davidson 1200 Sportster is frequently modified and customized with both Harley-Davidson original parts and aftermarket add-ons and accessories. The 1200 engine can be easily modified to produce more horsepower and torque. Kits are available from Harley-Davidson Screaming Eagle, Revolution Performance and Weisco.
How many cams are in a Harley Davidson Evo?
Harley’s decision to stick with the semi-unit construction of previous Sportsters resulted in a distinctly configured valve train. Unlike most of today’s motorcycle engines, the Sportster Evo uses just one cam per each overhead valve, resulting in four independent gear driven camshafts.
There are few differences in the construction of the 883 and 1200 cc Sportster Evo engines, the main one being a smaller bore on the 883 cc version.
It simply has larger bores; approximately 3.5 inches to the approximate 3 inch bore of the 883. Simply put, the 1200 Sportster engine has a bit more material and weighs slightly more than the 883 engine; the difference in weight is too small though to make a significant effect on performance.
Harley’s decision to stick with the semi-unit construction of previous Sportsters resulted in a distinctly configured valve train. Unlike most of today’s motorcycle engines, the Sportster Evo uses just one cam per each overhead valve, resulting in four independent gear driven camshafts.
How big is the engine on a Harley Davidson Sportster?
With a cylinder bore diameter of 76.2mm, the 883cc engine was the same size as the original Sportster, as well as it’s predecessor, the 1954 Harley K-model. The 1100cc Sportster has a bore of 85.1mm and was offered in 1986 and 1987 only. One notable difference between the two engines is their color.