What Is An Evo Engine By Harley

The Evolution engine on Harleys 883 models has a bore of 3 inches and a stoke of 38 inches.

What is an evo engine by harley. I call it the Blockhead. Making them pretty darn reliable for something 75 years old. I have a S S on it.

The evo motor is a reliable motor. Heres a look at the technical elements and developments that allowed the 80-cu-in. HD bought back the company from AMF in Feb of 1981 with it completely final sale in June.

The 80 inch Evolution Harley-Davidson engine is not known for power but more of the way it delivers its power. A WLA 45 well those date back to 1945. The Evo was released in 1984-12 3 years later.

THE EVOLUTION MOTOR. What years are Harley Evo motors. Probably the first in Harleys history.

As a result it gives a clear reason why they sit atop the list of the best motorcycle producers in the world. The picture was taken in 1979. Blockhead 1984-99 All Blockheads have the same displacement of 80 cubic inches.

Only thing I notice is a little bit of oil in the base gasket area but not enough to worry about i guess. I like the engine but the new ones are probably far better. But theres one used Harley that has a particularly bulletproof reputation.