The main difference between the 2.7-liter and 3.4-liter Boxster engines is the stroke. The stroke is the distance the piston travels up and down inside the cylinder. The 3.4-liter engine has a longer stroke than the 2.7-liter engine, which means the pistons travel a longer distance.
In addition to the longer stroke, the 3.4-liter engine also has a larger bore than the 2.7-liter engine. The bore is the diameter of the cylinder. The larger bore means that the pistons are larger in diameter and can hold more air and fuel.
The combination of the longer stroke and larger bore results in a significant increase in displacement from 2.7 liters to 3.4 liters. The 3.4-liter engine also has a higher compression ratio than the 2.7-liter engine, which means the air and fuel mixture is compressed more before ignition. This results in more power and torque.
In summary, the Porsche Boxster engines are not just bored out to increase the displacement. They have a number of significant differences, including the stroke, bore, and compression ratio, which contribute to the overall performance and character of the engine.
