Table of Contents
The 13B-REW engine is a popular choice among rotary enthusiasts, known for its lightweight design and high-revving capabilities. When equipped with turbo upgrades, this engine can achieve impressive horsepower figures, making it a favorite for performance builds. In this article, we will explore various turbo upgrades for the 13B-REW that have demonstrated real-world results of 350-450 horsepower on the dyno.
Understanding the 13B-REW Engine
The 13B-REW is a part of Mazda’s renowned Wankel rotary engine family. It features a compact design with a unique rotary combustion process, allowing for a high power-to-weight ratio. This engine was primarily used in the Mazda RX-7, particularly in the third generation (FC) and the fourth generation (FD) models.
Popular Turbo Upgrades for the 13B-REW
- Garrett GT28 Turbo
- Precision 6262 Turbo
- Holset HX35 Turbo
- Turbonetics T3/T4 Hybrid Turbo
- FP Turbo 68HTA
1. Garrett GT28 Turbo
The Garrett GT28 turbo is known for its quick spool time and ability to support up to 400 horsepower. Many 13B-REW owners have reported achieving excellent results with this turbo, especially in street applications where responsiveness is crucial.
2. Precision 6262 Turbo
The Precision 6262 turbo is a favorite among racers, capable of producing up to 600 horsepower. It is often used in builds aiming for higher horsepower figures, providing a balance of performance and reliability.
3. Holset HX35 Turbo
The Holset HX35 is a robust turbocharger that can deliver exceptional performance. It is capable of supporting horsepower levels well above 400, making it a solid choice for serious performance enthusiasts looking to push their 13B-REW to its limits.
4. Turbonetics T3/T4 Hybrid Turbo
The Turbonetics T3/T4 hybrid turbo is versatile and can cater to a wide range of performance needs. Its ability to produce strong boost levels makes it suitable for builds targeting the 350-450 horsepower range.
5. FP Turbo 68HTA
The FP Turbo 68HTA is designed for high-performance applications, offering quick spool and high efficiency. This turbo has gained popularity among rotary enthusiasts for its ability to produce strong power figures while maintaining reliability.
Supporting Modifications for Optimal Performance
While upgrading to a larger turbo is essential for achieving higher horsepower, several supporting modifications are necessary to ensure the engine can handle the increased power. These modifications include:
- Upgraded fuel injectors
- High-flow fuel pump
- Upgraded intercooler
- Performance exhaust system
- ECU tuning
1. Upgraded Fuel Injectors
To support increased horsepower, upgrading the fuel injectors is crucial. Larger injectors provide the necessary fuel flow to match the engine’s demand, ensuring optimal performance and preventing lean conditions.
2. High-Flow Fuel Pump
A high-flow fuel pump is essential to deliver the increased fuel required by larger injectors. This upgrade ensures that the engine receives a consistent fuel supply under high boost conditions.
3. Upgraded Intercooler
An upgraded intercooler helps reduce intake temperatures, allowing for denser air and improved combustion efficiency. This is particularly important when running higher boost levels.
4. Performance Exhaust System
A performance exhaust system reduces back pressure, allowing the engine to expel exhaust gases more efficiently. This upgrade can contribute to improved horsepower and torque figures.
5. ECU Tuning
Finally, proper ECU tuning is essential to maximize the performance of the upgraded turbo and supporting modifications. A tuned ECU will optimize fuel maps and ignition timing for the best possible power output.
Real-World Dyno Results
Many enthusiasts have taken their 13B-REW engines to the dyno to measure the results of their upgrades. Here are some notable dyno results achieved with various turbo setups:
- Garrett GT28: 375 HP
- Precision 6262: 450 HP
- Holset HX35: 420 HP
- Turbonetics T3/T4: 390 HP
- FP Turbo 68HTA: 410 HP
Conclusion
The 13B-REW engine, when paired with the right turbo upgrades and supporting modifications, can achieve remarkable horsepower figures between 350-450 HP. With a variety of turbo options available, enthusiasts can choose the setup that best suits their performance goals. Whether on the street or the track, these upgrades can transform the 13B-REW into a powerhouse that delivers exhilarating performance.