Table of Contents
The 13B-REW rotary engine is known for its unique design and impressive performance capabilities. One of the most effective modifications to enhance the engine’s power output is the installation of a performance camshaft. This article outlines the steps and considerations for installing a performance camshaft in the 13B-REW, focusing on increasing torque and horsepower.
Understanding the 13B-REW Engine
The 13B-REW is a part of Mazda’s Wankel rotary engine family, featuring a compact design and lightweight construction. Its unique rotary design allows for high RPMs and smooth power delivery. However, to unlock its full potential, performance upgrades like a camshaft can significantly improve engine characteristics.
Benefits of a Performance Camshaft
Installing a performance camshaft can lead to several benefits, including:
- Increased Torque: A performance camshaft is designed to optimize the engine’s airflow, resulting in better torque delivery, especially at mid to high RPMs.
- Higher Horsepower: With improved airflow and combustion efficiency, a performance camshaft can contribute to a noticeable increase in horsepower.
- Better Throttle Response: Upgraded cam profiles allow for quicker throttle response, enhancing overall driving experience.
- Enhanced Engine Sound: Many performance camshafts provide a more aggressive engine note, adding to the driving excitement.
Choosing the Right Performance Camshaft
Selecting the appropriate camshaft for your 13B-REW is crucial for achieving desired performance goals. Consider the following factors:
- Profile Type: Different cam profiles cater to various performance needs. Choose between street, track, or racing profiles based on your usage.
- Duration and Lift: Higher duration and lift can provide more power, but may affect drivability and idle quality.
- Compatibility: Ensure that the camshaft is compatible with your engine setup, including intake and exhaust systems.
- Manufacturer Reputation: Opt for camshafts from reputable brands known for quality and performance.
Tools and Materials Needed
Before starting the installation process, gather the following tools and materials:
- Socket set and wrenches
- Torque wrench
- Camshaft installation tool
- Engine oil
- Performance camshaft
- Gaskets and seals
- Timing tools
- Shop manual for the 13B-REW
Installation Steps
Follow these steps to install a performance camshaft in your 13B-REW:
- Preparation: Disconnect the battery and remove any components obstructing access to the camshaft, such as the intake manifold and exhaust system.
- Remove the Old Camshaft: Carefully remove the timing cover and timing belt or chain. Follow the service manual to properly align the timing marks.
- Inspect Components: Check the condition of the timing components, seals, and gaskets. Replace any worn parts before proceeding.
- Install the New Camshaft: Lubricate the new camshaft with engine oil. Align it with the timing marks and gently install it into the engine.
- Reassemble: Replace the timing cover, timing belt or chain, and any other components removed during disassembly. Ensure all bolts are torqued to specification.
- Reconnect Battery: After reassembly, reconnect the battery and check for any leaks or issues before starting the engine.
Tuning After Installation
After installing the performance camshaft, it’s essential to tune the engine for optimal performance. Consider the following:
- ECU Recalibration: Adjust the engine control unit (ECU) settings to accommodate the new camshaft characteristics.
- Dyno Testing: Conduct dyno testing to measure power gains and make further adjustments if necessary.
- Fuel Map Adjustments: Ensure the fuel map is optimized for the increased airflow and performance.
Conclusion
Installing a performance camshaft in the 13B-REW can significantly enhance torque and horsepower, making your rotary engine more powerful and enjoyable to drive. By carefully selecting the right camshaft and following the installation steps, you can unlock the full potential of your engine. Always remember to tune your engine after installation to achieve the best results.