Centrifugal Supercharger vs. Roots Supercharger

Attribute	Centrifugal Supercharger	Roots Supercharger
Design	Uses an impeller to compress air	Uses two meshing lobes to move air
Efficiency	Higher efficiency at higher RPMs	Lower efficiency at higher RPMs
Noise	Quieter operation	Louder operation
Installation	More complex installation	Relatively simpler installation

Introduction

Superchargers are a popular aftermarket modification for car enthusiasts looking to increase the horsepower and performance of their vehicles. Two common types of superchargers are the centrifugal supercharger and the roots supercharger. Both types have their own unique attributes and advantages, making them popular choices among car enthusiasts. In this article, we will compare the attributes of centrifugal superchargers and roots superchargers to help you decide which one is best for your vehicle.

Centrifugal Supercharger

Centrifugal superchargers are known for their compact size and efficiency. They are typically mounted on the front of the engine and are driven by a belt connected to the crankshaft. The centrifugal supercharger works by drawing air into a compressor housing, where it is compressed and forced into the engine's intake manifold. This results in increased air flow and higher horsepower output.

One of the main advantages of a centrifugal supercharger is its ability to provide a linear power delivery. This means that the power increase is consistent throughout the RPM range, making it ideal for daily driving and street use. Additionally, centrifugal superchargers are known for their ease of installation and compatibility with a wide range of vehicles.

However, centrifugal superchargers are known to produce more heat compared to roots superchargers. This can lead to potential heat soak issues, especially during extended periods of high-speed driving or track use. Additionally, centrifugal superchargers tend to be more expensive than roots superchargers, making them less budget-friendly for some car enthusiasts.

Roots Supercharger

Roots superchargers are known for their instant boost and low-end torque. They are typically mounted on top of the engine and work by using two rotors to compress air and force it into the engine's intake manifold. This results in a quick and noticeable increase in horsepower and torque, making roots superchargers popular among drag racers and off-road enthusiasts.

One of the main advantages of a roots supercharger is its ability to provide instant boost, even at low RPMs. This makes roots superchargers ideal for applications where quick acceleration and low-end torque are desired, such as drag racing or off-roading. Additionally, roots superchargers are known for their reliability and durability, making them a popular choice for high-performance applications.

However, roots superchargers are known for their parasitic drag, which can rob the engine of power and efficiency. This can result in decreased fuel economy and overall performance, especially at higher RPMs. Additionally, roots superchargers are typically larger and bulkier than centrifugal superchargers, making them less ideal for vehicles with limited space under the hood.

Comparison

• Size: Centrifugal superchargers are typically more compact and easier to install compared to roots superchargers.
• Power Delivery: Centrifugal superchargers provide a linear power delivery, while roots superchargers offer instant boost and low-end torque.
• Heat Production: Centrifugal superchargers tend to produce more heat compared to roots superchargers, which can lead to potential heat soak issues.
• Efficiency: Centrifugal superchargers are known for their efficiency, while roots superchargers are known for their parasitic drag.
• Cost: Centrifugal superchargers are typically more expensive than roots superchargers, making them less budget-friendly for some car enthusiasts.

Conclusion

Both centrifugal superchargers and roots superchargers have their own unique attributes and advantages. Centrifugal superchargers are known for their compact size, linear power delivery, and efficiency, while roots superchargers are known for their instant boost, low-end torque, and reliability. When choosing between the two types of superchargers, it is important to consider your specific needs and preferences, as well as the intended use of your vehicle. Ultimately, both centrifugal superchargers and roots superchargers can provide a significant increase in horsepower and performance, making them popular choices among car enthusiasts.