Bigger & Badder Series: Performance Upgrades for Your Harley-Davidson
Power 101: Internal Combustion, Engine Displacement, Exhaust & Tuning
The V-Twin engine in your Harley-Davidson motorcycle is powered by internal combustion. It?s when air and fuel (gasoline) combine in the carburetor or throttle body. The gasoline funnels into the cylinders through the intake manifold and a spark ignites the air & fuel mixture as the piston approaches top dead center (TDC). The combustion pushes the piston?