The V-Twin Report Blog
Rumor has it that a new Harley V-Twin engine, 107 MILWAUKEE-EIGHT, is just around the corner
The Twin Cam engine is 18 years old.
Rumors of a new Harley-Davidson V-twin engine are nothing new. I usually pay little attention to them because most of the banter is pure speculation or wishful thinking. However, a new rumor about a 107 ci 4-valve engine surfaced a few months ago, including close-up engine photos that have had a habit of appearing, disappearing and then reappearing again. Two photos are posted on Head Quarters’ Facebook site.
https://www.facebook.com/pages/Head-Quarters/105661307966
The new engine is rumored to have 4-valve heads (a total of eight valves), 107 cubic inch displacement, and is named the “107 MILWAUKEE-EIGHT.” “EIGHT” referring to eight valves, and, of course, Milwaukee is home to Harley-Davidson. The air cleaner in one of the photos includes the “107 MILWAUKEE-EIGHT” branding.
Engine Science 101: Maximize Power Through Sound Engine Design
Heavy Breather A/C. Courtesy Harley-Davidson, Inc.
Most V-Twin owners begin engine performance upgrades with a free-flowing air cleaner and high-flow exhaust system. Then they add an EFI tuner along with a dyno tune to optimize the combination. But some combinations never perform up to expectations regardless of the amount of time spent tuning or the tuner’s expertise. This is because tuning actually starts with engine design and parts selection. And some engines were never designed properly. As a result, no amount of tuning can make a poorly conceived engine perform up to expectations.
