Bob LaRosa

1984-1999 Overview of the Harley Evolution Engine

Bob LaRosa
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Duration:   3  mins

Oh, Evo, how I love thee. The Harley Evolution engine helped bring Harley-Davidson back from bankruptcy. This was a major design advance for Harley-Davidson in many ways. The Harley Evolution engine is most distinct from earlier Harley-Davidson engine designs by due to its reliability, oil tightness, and ability to run hard under all circumstances, thousands of miles farther than any of its predecessors. If you ride an Evo, check out what makes your ride special. If you are riding a Twin Cam, check out the technology that has been upgraded.

Bob gives us an overview:

-Rubber Mount was a technology breakthrough
-Rear Axle – Castle style nut and cotter pin
-Rear Belt is wider
-Swing Arm design
-Outer Primary Cover
-Stator Retainer
-Speedo drive cable
-Calipers
-Rotor Design
-Wheel Bearings
-Rear Caliper
-Rear Axle Adjusters

Next Video: Evolution Rear Brake Caliper & Pads

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2 Responses to “1984-1999 Overview of the Harley Evolution Engine”

  1. Brian Daniels

    I have an 85 wide glide. I know that the first few years they would dump oil when not started and ran for a few days. I don’t remember my 86 sporty having this issue. What can I do to slow down or stop this issue?

  2. Larry

    I have an 1984 softail, gear shift lever will not return do I have to pull tranny

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