Anyway, back to topic. All harleys are no longer 100% air cooled, i dont see how S&S can make the new emission standard without at least liquid cooling the heads.
Likewise the new 2016 Triumph Bonneville. The engine looks as if it is air cooled, but unlike the 2001 version the heads are water cooled.
The water cooling also helps the motor meet noise regulations, I'm told.
Peter, 66, 2016 Porsche Boxster S No longer driving Tarka, the 2014 Plus 8...
