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Aftermarket camshafts are a popular modification for car enthusiasts looking to increase horsepower and improve engine performance. The FA20 engine, used in various Subaru and Toyota models, has become a focal point for such modifications. This article explores whether aftermarket camshafts, specifically the Crower brand, are worth the investment compared to OEM options.
Understanding Camshafts
Camshafts play a crucial role in controlling the timing and duration of the engine’s intake and exhaust valves. The design and specifications of a camshaft can significantly affect engine performance, including horsepower and torque output. When considering aftermarket options, it’s essential to understand the differences in design and how they impact performance.
OEM Camshafts
OEM camshafts are designed to meet the manufacturer’s specifications and provide reliable performance. They are engineered to ensure a balance between power, efficiency, and emissions compliance. Here are some characteristics of OEM camshafts:
- Designed for optimal performance within factory parameters.
- Typically offer good reliability and longevity.
- Less aggressive profiles compared to aftermarket options.
Aftermarket Camshafts
Aftermarket camshafts, such as those from Crower, are designed to enhance performance beyond factory specifications. They often feature more aggressive profiles, which can lead to increased horsepower and torque. Here are some benefits of opting for an aftermarket camshaft:
- Potential for significant horsepower gains, often between 15-20 HP.
- Improved throttle response and engine dynamics.
- Customization options to suit specific performance goals.
Testing Methodology
To determine the effectiveness of Crower camshafts compared to OEM, we conducted a series of tests on a Subaru WRX equipped with the FA20 engine. The testing involved:
- Baseline dyno runs with OEM camshafts.
- Installation of Crower camshafts and subsequent dyno runs.
- Monitoring of engine parameters such as horsepower, torque, and RPM.
Results
The results of our testing revealed notable differences between the two camshaft options. The OEM camshafts provided a baseline performance, while the Crower camshafts showed significant improvements.
- OEM Camshafts: Peak horsepower of 250 HP.
- Crower Camshafts: Peak horsepower of 270 HP.
This data indicates a gain of 20 horsepower, aligning with the expected performance increase from aftermarket camshafts. Additionally, torque improvements were observed, enhancing overall engine responsiveness.
Considerations Before Upgrading
While aftermarket camshafts can provide significant performance gains, there are several factors to consider before making the switch:
- Cost of aftermarket camshafts versus potential gains.
- Compatibility with existing engine components.
- Impact on fuel economy and emissions.
- Need for tuning to maximize performance.
Conclusion
In conclusion, aftermarket camshafts, particularly from Crower, can be worth the investment for those looking to enhance the performance of their FA20 engine. With a potential gain of 15-20 HP, they offer a compelling option for enthusiasts seeking more power. However, it’s essential to weigh the benefits against the costs and ensure compatibility with your vehicle’s setup.
Ultimately, whether to upgrade to aftermarket camshafts depends on individual performance goals and budget considerations. For those ready to take their engine performance to the next level, Crower camshafts present a viable option worth exploring.