Harley-Davidson is a well-known American motorcycle manufacturer, known for its iconic V-twin engines. Two popular engine models produced by Harley-Davidson are the 103 and 107. While they may seem similar on the surface, there are several differences between these two engine models.
Main Differences between 103 and 107 Harley Engine :
Harley-Davidson 103 Engine: The Harley-Davidson 103 engine is a V-twin engine with a displacement of 103 cubic inches or 1690 cc. It is an air-cooled engine with a compression ratio of 9.6:1. The engine produces a maximum torque of 100.3 lb-ft at 3750 rpm and a maximum horsepower of 75 hp at 5500 rpm.
Harley-Davidson 107 Engine: The Harley-Davidson 107 engine is a V-twin engine with a displacement of 107 cubic inches or 1745 cc. It is also an air-cooled engine with a compression ratio of 10.0:1. The engine produces a maximum torque of 111 lb-ft at 3250 rpm and a maximum horsepower of 86 hp at 5500 rpm.
Difference between Harley-Davidson 103 and 107 Engines: One of the most significant differences between the Harley-Davidson 103 and 107 engines is their displacement. The 107 engine has a larger displacement than the 103 engine, which translates to more power and torque. This makes the 107 engine ideal for riders who want a more powerful and responsive ride.
Another difference between the two engines is their compression ratio. The 107 engine has a higher compression ratio than the 103 engine, which also contributes to its increased power and torque.
Lastly, the 107 engine is also more fuel-efficient than the 103 engine, thanks to a redesigned combustion chamber and improved fuel injection system.
In summary, while both the Harley-Davidson 103 and 107 engines are V-twin air-cooled engines, the 107 engine has a larger displacement, higher compression ratio, and improved fuel efficiency, making it the more powerful and desirable engine for riders who want a high-performance ride.