Cost Breakdown: Building a 13b-rew with Forged Internals for 400+ Hp on a $5,000 Budget

Building a powerful 13B-REW engine with forged internals is an exciting project for any automotive enthusiast. This article will break down the costs associated with achieving over 400 horsepower on a budget of $5,000.

Understanding the 13B-REW Engine

The 13B-REW is a part of Mazda’s Wankel rotary engine family, known for its lightweight design and high power-to-weight ratio. To achieve the desired horsepower, modifications and upgrades are necessary.

Cost Breakdown

Here’s a detailed breakdown of the costs involved in building a 13B-REW with forged internals:

  • Engine Block: $1,200
  • Forged Rotors: $800
  • Forged Apex Seals: $300
  • Upgraded Fuel Injectors: $400
  • Aftermarket Turbocharger: $1,000
  • ECU Tuning: $600
  • Miscellaneous Parts (gaskets, bolts, etc.): $700

Detailed Cost Analysis

Engine Block

The foundation of your build starts with a solid engine block. A used or remanufactured 13B block can be sourced for around $1,200, depending on condition.

Forged Rotors

Forged rotors are essential for handling increased power. Expect to spend about $800 for a set of high-quality forged rotors that can withstand the stress of high horsepower.

Forged Apex Seals

Apex seals are critical for engine compression and durability. Upgrading to forged apex seals will cost approximately $300, providing better performance and longevity.

Upgraded Fuel Injectors

To ensure proper fuel delivery, upgraded fuel injectors are a must. A set of high-flow injectors can be found for around $400.

Aftermarket Turbocharger

A reliable aftermarket turbocharger will significantly boost your power output. Budget about $1,000 for a suitable turbo that can support 400+ horsepower.

ECU Tuning

Proper tuning is vital for maximizing performance. Investing around $600 in ECU tuning will ensure your engine runs efficiently with the new modifications.

Miscellaneous Parts

Don’t forget the smaller components that can add up quickly. Budget about $700 for gaskets, bolts, and other miscellaneous parts needed for the build.

Final Thoughts

By carefully sourcing parts and sticking to a budget, building a 13B-REW with forged internals for over 400 horsepower is achievable within the $5,000 limit. Each component plays a crucial role in the overall performance and reliability of the engine.

With dedication and the right resources, you can embark on this rewarding project and enjoy the thrill of a powerful rotary engine.