Liquid cooled Harley-Davidson's for 2014

Named "Project Rushmore," the 2014 Harley model release saw several updates to there traditional motorcycle line. Most notably, they announced that some of their 2014 Touring models will feature the "Twin-Cooled" engine. These engines will circulate coolant through the cylinder heads in combination with air cooling to allow for higher compression ratios and more stable engine output.

Ever since a patent of a liquid cooled Twin Cam surfaced on the internet, there has been speculation that Harley-Davidson would be releasing a liquid cooled engine.  It looks like the speculation was right.  The design of the engine shows a discrete radiator located between the down tubes. 

Three models will receive the “Twin-Cooled” engine, including the 103 cubic inch Electra Glide Ultra Limited motorcycle and the Tri Glide Ultra motorcycle. A 110 cubic inch version of the “Twin-Cooled” engine will also be found in the 2014 CVO Limited.

Other touring models featured as part of "Project Rushmore" will received a traditionally air cooled, High Output Twin Cam 103 motors.


Here is what Harley has to say on its web site about the new “Twin-Cooled” engines:

“If you started in 1909 with the very first Harley-Davidson V-Twin engine and worked your way up through every engine, every innovation, every improvement, every ride, every durability test in all those years and countless miles since, you arrive at the Twin Cooled High Output Twin Cam 103™ engine. This is the top of the line. 103 cubic inches of air and precision cooled Harley-Davidson®V-twin power. Twin cooling cools the heads around the exhaust ports to deliver at or near peak performance under all operating conditions and temperatures. Higher compression ratio increases efficiency and horsepower. There’s a new airbox for increased airflow and a new cam to optimize low-end torque. It’s got the fastest 60 to 80 mph 5th gear roll on in the history of Harley-Davidson. Which means it’s got the most passing power in the history of Harley-Davidson. On top of all that, it puts less heat on the rider and passenger on scorching days and in stop and go traffic.”

For more information and details regarding the new 2014 Harley-Davidson motorcycles and "Project Rushmore," visit the Harley-Davidson website.