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The 2JZ engine, known for its robust performance and tuning potential, is a favorite among car enthusiasts aiming for high horsepower builds. When pushing the limits to achieve 700+ horsepower, an efficient and reliable fuel system is crucial. This article will delve into designing a custom fuel system for the 2JZ using AEM and Aeromotive components.
Understanding the Fuel Requirements
Before selecting components for your fuel system, it’s essential to understand the fuel requirements for a 700+ hp 2JZ setup. The engine’s fuel needs will depend on several factors, including boost levels, fuel type, and desired air-fuel ratios.
- Fuel Type: Common choices include E85, pump gas, or race fuel.
- Target Air-Fuel Ratio: Typically, a ratio of 11.0:1 to 12.0:1 is ideal for high-performance builds.
- Injector Size: Larger injectors will be necessary to meet fuel demands.
Choosing the Right Components
For a high-powered 2JZ fuel system, selecting quality components from reputable brands is vital. AEM and Aeromotive provide excellent options for fuel pumps, regulators, and injectors.
AEM Fuel Pumps
AEM offers a range of fuel pumps designed for high-performance applications. Their pumps are known for reliability and high flow rates, making them suitable for 700+ hp builds.
- AEM 50-1000: Capable of supporting up to 1,000 hp, this pump is a popular choice among tuners.
- AEM 50-1200: This pump can handle even higher demands, ensuring adequate fuel supply under extreme conditions.
Aeromotive Fuel Regulators
Aeromotive fuel regulators are designed to maintain consistent fuel pressure, which is crucial for optimal engine performance. For a 2JZ setup, the following models are recommended:
- Aeromotive A1000: This regulator is adjustable and can handle high flow rates, making it perfect for high-powered applications.
- Aeromotive Eliminator: Designed for extreme performance, this regulator ensures stable pressure under varying conditions.
Designing the Fuel System Layout
Once the components are selected, the next step is designing the fuel system layout. A well-planned layout will ensure efficient fuel delivery and minimize potential issues.
- Fuel Tank: Consider upgrading to a larger fuel tank to accommodate increased fuel demands.
- Fuel Lines: Use AN-8 or AN-10 lines to ensure adequate flow and pressure.
- Fuel Filter: Install a high-flow fuel filter to protect the injectors from debris.
Installing the Fuel System
Installation of the custom fuel system should be done meticulously to avoid any leaks or performance issues. Follow these steps for a successful installation:
- Mount the Fuel Pump: Securely mount the AEM fuel pump in the fuel tank or near the tank if using an external setup.
- Run Fuel Lines: Route the fuel lines from the tank to the engine bay, ensuring they are protected from heat and abrasion.
- Install the Regulator: Position the Aeromotive regulator close to the fuel rail for optimal pressure control.
- Connect Injectors: Ensure proper installation and connection of high-flow injectors.
Tuning the Fuel System
After installation, tuning the fuel system is crucial for achieving the desired performance. A professional tuner should be consulted to ensure that the air-fuel ratio is optimized and the system operates effectively.
- Dyno Testing: Use a dynamometer to measure the engine’s performance and make necessary adjustments.
- Wideband O2 Sensor: Install a wideband O2 sensor to monitor air-fuel ratios in real-time.
Conclusion
Designing a custom fuel system for a 2JZ engine aiming for over 700 hp involves careful selection of components and meticulous planning. By utilizing AEM and Aeromotive parts, enthusiasts can create a reliable and efficient fuel system that meets the demands of high-performance builds. With the right setup and tuning, the 2JZ can achieve impressive power levels while maintaining reliability.