Parts for your 2017 Subaru Exiga-Harmonic balancers

Understanding the Role of Harmonic Balancers on the 2017 Subaru Exiga

The 2017 Subaru Exiga, a popular choice for those who need a reliable and spacious vehicle, is equipped with a horizontally opposed Boxer engine that delivers smooth performance. One component that often comes up in discussions about engine health is the harmonic balancer, also known as a crankshaft damper. This part plays a crucial role in many vehicles, but is it relevant or even used on the 2017 Subaru Exiga? After referring to technical sources and manufacturer specifications, it appears that the Exiga's engine design does not incorporate a traditional harmonic balancer in the way many other vehicles might.

The key reason a conventional harmonic balancer is not typically found on the 2017 Subaru Exiga stems from the nature of its engine design. Subaru's Boxer engines are inherently balanced due to their flat configuration, with opposing pistons moving in tandem to counteract vibrations. This natural balance reduces the need for additional damping components such as harmonic balancers. In other words, the mechanical design itself mitigates the torsional vibrations on the crankshaft that harmonic balancers aim to control in many inline or V-shaped engines.

That said, some versions of Subaru Boxer engines use a form of vibration damping integrated into other engine components, such as the crankshaft pulley or timing components, but these are not typically classified as traditional harmonic balancers. Instead, the engine's dynamic balance and counterweights handle the torsional vibrations effectively enough that a separate harmonic balancer is unnecessary.

When vehicles do employ a harmonic balancer, its purpose is pretty straightforward and important. The balancer is mounted on the front end of the crankshaft and is designed to reduce the twisting vibrations created by the engine's moving parts. These vibrations, known as torsional vibrations, can cause premature wear or even damage to the crankshaft and other engine components over time if not controlled. The harmonic balancer typically consists of a heavy outer ring bonded to an inner hub with a rubber or elastomeric material acting as a damper. This allows it to absorb and dissipate the vibrations efficiently.

In cars where a harmonic balancer is fitted, regular inspection and maintenance are crucial. Over time, the rubber component can degrade due to heat, oil exposure, and age, causing the balancer to lose its effectiveness. If this happens, it can lead to increased vibrations, noticeable engine noise, or even damage to the engine accessories driven by the crankshaft pulley. Mechanics often check for cracks, separation between the hub and the outer ring, or any wobble in the pulley during routine servicing.

Replacing a faulty harmonic balancer involves removing the crankshaft pulley first, which typically requires special tools, followed by fitting a new damper with precision to maintain the engine's timing and balance. It's a relatively straightforward job for a skilled mechanic but important not to overlook, given the role the balancer plays in preserving engine health.

Since the 2017 Subaru Exiga does not rely on a conventional harmonic balancer, owners get a bit of a break in this area of maintenance. The natural balance engineered into Subaru's Boxer engine means there are fewer components that demand regular attention purely for vibration damping. However, it is still important to keep an eye on related parts like the crankshaft pulley and belts for wear and tear as part of the overall servicing schedule.

In essence, while the harmonic balancer is a critical component for many vehicles to protect the crankshaft and maintain smooth operation, the 2017 Subaru Exiga's engine design cleverly removes the need for this part. Owners can focus their maintenance efforts on other vital items such as timing belts, pulleys, and regular engine tune-ups to keep their Exiga running smoothly for many kilometres.