Table of Contents
The Subaru BRZ has garnered significant attention among car enthusiasts for its lightweight chassis and engaging driving dynamics. However, many owners seek to enhance performance, particularly in terms of horsepower. Two popular supercharger options for the BRZ are the Rotrex C38-91 and the Jackson Racing supercharger. This article compares these two superchargers to help you determine which one is best suited to boost your BRZ to over 300 horsepower.
Overview of Supercharging
Supercharging is a method of forced induction that increases an engine’s power output by compressing the intake air, allowing for more air and fuel to enter the combustion chamber. This results in a significant boost in horsepower and torque. Both the Rotrex C38-91 and Jackson Racing superchargers offer unique benefits and features that cater to different driving styles and performance goals.
Rotrex C38-91 Supercharger
The Rotrex C38-91 is a centrifugal supercharger known for its efficiency and compact design. It utilizes a gear-driven system that allows for a high level of boost without sacrificing reliability.
Performance Characteristics
The C38-91 is designed to deliver a smooth power curve, making it ideal for daily driving as well as track use. Key characteristics include:
- Boost Levels: Capable of producing up to 10-12 psi of boost.
- Power Output: Can achieve over 300 hp with proper tuning.
- Efficiency: High efficiency at various RPMs, minimizing lag.
Installation and Compatibility
The installation of the Rotrex C38-91 requires specific mounting brackets and piping, which are usually included in the kit. It is generally compatible with both manual and automatic BRZ models, making it a versatile option for many owners.
Jackson Racing Supercharger
The Jackson Racing supercharger is another popular choice among BRZ enthusiasts. This supercharger is known for its roots-style design, which provides immediate power delivery and a distinctive sound that many drivers love.
Performance Characteristics
The Jackson Racing supercharger is designed to provide a different driving experience compared to the Rotrex. Key characteristics include:
- Boost Levels: Typically produces around 7-9 psi of boost.
- Power Output: Can also achieve over 300 hp with appropriate tuning.
- Power Band: Offers strong low-end torque and immediate throttle response.
Installation and Compatibility
The Jackson Racing supercharger kit is designed for straightforward installation, often requiring fewer modifications than the Rotrex. It is compatible with both manual and automatic transmissions, making it a user-friendly option for many BRZ owners.
Comparative Analysis
When comparing the Rotrex C38-91 and Jackson Racing superchargers, several factors should be considered:
- Power Delivery: The Rotrex offers a smooth power curve, while the Jackson Racing provides immediate throttle response.
- Installation Complexity: Jackson Racing typically has a simpler installation process.
- Sound: Jackson Racing has a distinctive supercharger whine, while the Rotrex is quieter.
- Boost Levels: Rotrex generally offers higher boost potential.
Conclusion
Choosing between the Rotrex C38-91 and the Jackson Racing supercharger ultimately depends on your driving preferences and performance goals. If you prefer a smoother power delivery and higher boost potential, the Rotrex may be the better choice. However, if you value immediate throttle response and easier installation, the Jackson Racing supercharger could be more suitable. Both options can elevate your BRZ’s performance to over 300 horsepower, providing an exhilarating driving experience.