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The Mazda RX-7 is a legendary sports car known for its lightweight design and rotary engine performance. Upgrading to a Garrett GT35 Turbo to achieve 300 wheel horsepower (WHP) can enhance its capabilities significantly. This article will provide a detailed cost breakdown for this upgrade, including parts, labor, and additional considerations.
Understanding the Upgrade
The goal of upgrading to a Garrett GT35 Turbo is to increase the power output of the RX-7. Achieving 300 WHP requires more than just the turbo itself; it involves a series of components and modifications to ensure reliability and performance.
Cost Breakdown
- Garrett GT35 Turbo: $1,200 – $1,800
- Turbo Manifold: $500 – $1,000
- Intercooler: $300 – $600
- Wastegate: $200 – $400
- Blow-off Valve: $100 – $300
- Fuel Injectors: $300 – $600
- Fuel Pump: $150 – $300
- Tuning (ECU): $500 – $1,000
- Labor Costs: $1,000 – $2,000
Individual Component Costs
Garrett GT35 Turbo
The Garrett GT35 Turbo is a high-performance turbocharger designed for applications seeking significant power increases. Prices can vary based on the supplier and any additional features.
Turbo Manifold
A quality turbo manifold is essential for proper turbo installation. It ensures optimal exhaust flow and can impact the overall performance of the turbo system.
Intercooler
An intercooler is crucial for reducing the temperature of the compressed air from the turbo, improving efficiency and power. Selecting the right size is important for achieving the desired WHP.
Wastegate
A wastegate controls the boost pressure generated by the turbo. An external wastegate is often preferred for performance applications, allowing for better boost control.
Blow-off Valve
A blow-off valve prevents compressor surge by venting excess pressure when the throttle is closed. This component is important for maintaining turbo health and performance.
Fuel Injectors
Upgrading fuel injectors is necessary to ensure the engine receives enough fuel to match the increased air from the turbo. Proper sizing is critical for optimal performance.
Fuel Pump
A high-performance fuel pump is essential for delivering the increased fuel flow needed for higher horsepower levels. It helps maintain fuel pressure under load.
Tuning (ECU)
After all components are installed, proper tuning of the engine control unit (ECU) is necessary to optimize performance and ensure reliability. This can be done through a professional tuning service.
Labor Costs
Labor costs can vary significantly depending on the shop and the complexity of the installation. It is advisable to get quotes from multiple shops and ensure they have experience with RX-7 modifications.
Additional Considerations
When upgrading to a Garrett GT35 Turbo, there are additional factors to consider that can impact the overall cost and success of the project:
- Supporting Mods: Upgrading the clutch, brakes, and suspension may be necessary to handle the increased power.
- Maintenance: Regular maintenance is crucial for reliability, especially with increased performance parts.
- Insurance: Check with your insurance provider about any changes in coverage due to performance modifications.
Conclusion
Upgrading a Mazda RX-7 to achieve 300 WHP with a Garrett GT35 Turbo can be an exciting project for any car enthusiast. With a total estimated cost ranging from $4,000 to $8,000, it is essential to plan carefully and consider all components and labor involved. By understanding the costs and requirements, you can ensure a successful upgrade that enhances your driving experience.