The 1984 model year was the first year for the Evolution big twin engine, actually introduced in calendar year 1983. The old big twin engine, commonly referred to as the shovelhead was also produced that entire model year. Both were referred to by the factory as being 80 cubic inches, when in fact they were both 81.6 cubic inches.
2007
the 1340 evolution motor by harley davidson is 84cc.
1000
The last year the Harley-Davidson Evo (Evolution) motor was produced was 2000. This engine was a significant evolution in Harley's lineup, introduced in 1984, and was eventually succeeded by the Twin Cam engine. The Evo motor is known for its reliability and performance, contributing to Harley's resurgence in the 1980s and 1990s.
AMF developed the motor. The Evo motor was just sitting on the shelf at HD when AMF sold out.
Harley-Davidson motor company was founded in 1903
1903 The "Harley" of Harley-Davidson was William Sylvester Harley. He was born on December 29, 1880. In 1903 he co-founded Harley-Davidson Motor Company with Arthur Davidson.
Harley-Davidson Motor Company is incorporated on September 17th. Source: Harley Davidson web site.
Harley Davidson is a motor company famed for their motorcycle engines. Any woman riding a Harley Davidson could, with some legitimacy, be called a 'Harley Davidson woman'.
"The Harley Davidson logo is an orange and black symbol with the words ""Harley Davidson Motor Company"". It is used on all Harley Davidson merchandise including motorcycles, shirts, and jackets."
Harley Davidson recommends it (Citco I think) but No!!! Just use the correct weight for your motor, time of year and how you ride it!
The best place to view Harley Davidson motorcycles is at your local Harley Davidson retailer. They have experts that can give you detailed advice on the product.