Re-Tuning the Heads
“The tighter you squeeze the air mixture, the more horsepower you get out of it,” Doggett said. The box stock Harley-Davidson® engine is built for longevity, not for peak performance, said Tom Doggett of Strokers USA, Inc. Harley de-tunes the Evolution engine by making the head ports less efficient. Doggett said he can increase the engine’s fuel efficiency and boost its horsepower by porting and decking the heads. During the interview, for... [Read More...]
Cylinder Boring for your V-Twin
After your Harley-Davidson® motorcycle has a lot of miles on it and it isn’t running as strong as it should. The cylinders seem to wear closer to the top and they loose mechanical efficiency. You have them bored to get them straight. The engine will then run cooler and have more power. Evolution motors’ cylinders have a tenancy to get out of round because of the long cylinder studs. When the motor gets hot, in lines of traffic in hot... [Read More...]
How to change your oil
An oil change sounds really simple but doing it correctly will make a huge difference in the life of your motorcycle engine. Here are a few tips to remember. Read More →