Adding Performance To Your Harley's Milwaukee-Eight Motor

INSTALLING HARLEY’S SCREAMIN’ EAGLE HIGH-FLOW AIR CLEANER KIT

- John Sullivan

ALTHOUGH HARLEY’S MILWAUKEE-EIGHT MOTOR PACKS 107-INCHES OF POWER, IT CAN EASILY BE IMPROVED ON. STARTING WITH HARLEY’S SCREAMIN’ EAGLE HIGH-FLOW AIR FILTER KIT.

THE HI-FLOW AIR FILTER KIT’S TWO MAIN PARTS ARE THE CAST ALUMINUM BACKPLATE AND FILTERING ELEMENT. THE BACK PLATE FEATURES A CONTOURED TRANSITION INTO THE THROTTLE BODY’S AIR INLET.

The introduction of Harley’s Milwaukee-Eight motor in the fall of 2017 brought back memories of 1998 and the Company’s launch of the then-new Twin-Cam motor. The Twin-Cam motor was a huge difference from their prior Evolution motor. For the Milwaukee-Eight motor, Harley developed a completely new V-twin which they fitted with a set of 4-valve cylinder heads. In one way the Mil-8 motor is a bridge back to the Evolution motors; like the Evo motors, it uses a single camshaft. Other than that single camshaft, the new motor has a lot more in common with Harley’s Twin-Cam motors. Like the Twin-Cam motor, the Milwaukee-Eight motor uses a chain system to drive its single camshaft and an outboard camshaft mounting plate that also mounts a crankshaft-driven two-stage gyratory oil pump.