Harley-David­son have in­tro­duced their new big V-twin en­gine line, Mil­wau­keeEight, in the 2017 Tour­ing line-up. It’s only their third new en­gine line in 80 years

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AF­TER NAMES LIKE ‘SHOVELHEAD’, ‘PANHEAD’, and ‘Flathead’, the new ‘Mil­wau­kee-Eight’ V-twin en­gines ac­tu­ally de­rive their name from H-D’s home city of Mil­wau­kee, Wis­con­sin, in the United States of Amer­ica. The ‘Eight’ sig­ni­fies the eight­valve lay­out. There are two dis­place­ments avail­able: 107 cu­bic inches (~1,750 cc) and 114 cu­bic inches (~1,860 cc). Th­ese two re­place the 103-inch (1,670-cc) big twin and 110-inch (1,802cc) Screamin’ Ea­gle units.

In its stan­dard guise — air-cooled with an oil-cooler — the 107 will ini­tially be of­fered in the 2017 Tour­ing mod­els: Street Glide, Road King, Road Glide and the Ultra Clas­sic Elec­tra Glide, while the ‘Twin-Cooled’ unit, with liq­uid-cooled heads and ra­di­a­tors, will fea­ture in high-end mod­els such as the Ultra Lim­ited and Road Glide Ultra as well as the TriGlide trike. The 114 is be­ing of­fered in the top-end CVO mod­els such as the Lim­ited and the Street Glide.

While the old 103 de­liv­ered be­tween 74 and 86 PS, and 124 and 138 Nm, de­pend­ing on tune, the new 107 bet­ters those fig­ures by be­tween eight and 11 per cent. The Road King and Street Glide put out about 90 PS and a hefty 151 Nm, while the Twin-Cooled 107 surely bet­ters 90 PS and puts out a bit more torque, rated at 154 Nm. The old 110 was close to 100 PS and made 156 Nm. The new 114 should put out 100+ PS, mak­ing 168 Nm across a more re­laxed rev spread. When the 107 moves to the Sof­tail and, even­tu­ally, the Dyna line, we may still ex­pect 80+ PS and 145+ Nm. The 2017 Tour­ing mod­els also cut ac­cel­er­a­tion times by over 10 per cent. Ini­tially, only the Tour­ing line-up will get th­ese en­gines but th­ese will even­tu­ally be avail­able across the range.

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