13b-rew vs 13b-rew Rev 1: Performance Differences and Upgrade Paths

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The 13B-REW and 13B-REW Rev 1 are two variants of the Mazda Wankel rotary engine, each with distinct features and performance characteristics. This article will explore the differences between these two engines, their performance metrics, and potential upgrade paths for enthusiasts and builders.

Overview of the 13B-REW

The 13B-REW engine was introduced in the early 1990s as part of the Mazda RX-7 lineup. It is known for its lightweight design and high power output, making it a favorite among performance enthusiasts.

Key Specifications

  • Displacement: 1.3 liters
  • Power Output: Approximately 255 hp
  • Torque: 217 lb-ft

Overview of the 13B-REW Rev 1

The 13B-REW Rev 1 is an updated version of the original 13B-REW engine. It incorporates several enhancements aimed at improving performance and reliability.

Key Specifications

  • Displacement: 1.3 liters
  • Power Output: Approximately 280 hp
  • Torque: 225 lb-ft

Performance Differences

While both engines share a similar base design, there are notable performance differences that set them apart.

Power and Torque Comparison

The 13B-REW Rev 1 offers a higher power output and torque compared to the standard 13B-REW. This increase is due to various enhancements in the engine’s design and tuning.

Engine Management System

The 13B-REW utilizes an earlier engine management system, while the Rev 1 features a more advanced system that allows for better tuning and fuel efficiency.

Cooling Systems

The Rev 1 engine includes improved cooling systems that enhance performance during high-stress situations, such as racing or spirited driving.

Upgrade Paths

For those looking to enhance the performance of either engine, there are several upgrade paths available.

Performance Parts for 13B-REW

  • Aftermarket exhaust systems
  • High-performance intake manifolds
  • ECU tuning options

Performance Parts for 13B-REW Rev 1

  • Upgraded turbochargers
  • Enhanced intercoolers
  • Advanced engine management systems

Conclusion

Both the 13B-REW and 13B-REW Rev 1 offer unique advantages for rotary engine enthusiasts. Understanding the differences in performance and available upgrades can help owners make informed decisions about their vehicles.