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The Mazda FD RX-7 is a beloved sports car known for its lightweight design and rotary engine. Many enthusiasts seek to upgrade this vehicle to achieve higher horsepower and improved performance. This article provides a detailed cost analysis of upgrading the FD RX-7 to 400 horsepower using sequential rotaries and aftermarket electronics.
Understanding the Rotary Engine
The rotary engine, specifically the Wankel design used in the RX-7, is distinct from traditional piston engines. It offers a unique combination of lightweight construction and high-revving capabilities. However, to reach 400 horsepower, modifications are necessary.
Key Upgrades for Achieving 400 HP
- Sequential Rotary Setup
- Aftermarket Engine Management System
- High-Performance Turbocharger
- Upgraded Fuel System
- Improved Cooling System
Sequential Rotary Setup
Upgrading to a sequential rotary setup involves installing multiple rotors to increase airflow and power output. This modification can significantly enhance performance but comes with a cost.
Cost of Sequential Rotary Setup
The cost for a sequential rotary setup can vary based on the components used. On average, expect to pay between $5,000 and $10,000 for high-quality parts and installation.
Aftermarket Engine Management System
An aftermarket engine management system (EMS) is crucial for tuning the engine to handle the increased power. This system allows for precise adjustments to fuel maps and ignition timing.
Cost of Aftermarket EMS
The price of an aftermarket EMS typically ranges from $1,500 to $3,000, depending on the brand and features. Professional tuning services may add an additional $500 to $1,000.
High-Performance Turbocharger
A high-performance turbocharger is essential for achieving the desired horsepower. It increases the amount of air entering the engine, allowing for more fuel and power.
Cost of Turbocharger
The cost of a quality turbocharger can range from $1,000 to $3,000. Installation costs may add another $500 to $1,500, depending on the complexity of the setup.
Upgraded Fuel System
To support the increased power, an upgraded fuel system is necessary. This includes high-flow fuel injectors and a more powerful fuel pump.
Cost of Fuel System Upgrade
The cost for upgrading the fuel system typically ranges from $1,000 to $2,500, including parts and labor.
Improved Cooling System
With increased power, the engine will generate more heat, making an improved cooling system vital. This may include a larger radiator and upgraded cooling fans.
Cost of Cooling System Upgrade
The costs for an improved cooling system can range from $800 to $1,500, depending on the components chosen.
Total Cost Estimate
When considering all the upgrades necessary to achieve 400 horsepower in the FD RX-7, the total estimated costs are as follows:
- Sequential Rotary Setup: $5,000 – $10,000
- Aftermarket EMS: $1,500 – $3,000
- High-Performance Turbocharger: $1,000 – $3,000
- Upgraded Fuel System: $1,000 – $2,500
- Improved Cooling System: $800 – $1,500
The total cost for upgrading the FD RX-7 to 400 horsepower can range from approximately $9,300 to $20,000, depending on the choices made and labor costs.
Conclusion
Upgrading the Mazda FD RX-7 to achieve 400 horsepower is an exciting prospect for any enthusiast. However, it requires careful planning and budgeting. By understanding the costs associated with each upgrade, owners can make informed decisions that align with their performance goals and financial constraints.