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The Toyota AE86 is a beloved platform among car enthusiasts, known for its lightweight design and balanced handling. However, many enthusiasts seek to increase the power output of their AE86s to achieve a more thrilling driving experience. One popular method is swapping in the Nissan SR20DET engine, which can easily provide over 100 horsepower. This article will guide you through the steps to successfully complete this swap.
Understanding the SR20DET Engine
The SR20DET is a turbocharged inline-four engine produced by Nissan. It has become a popular choice for engine swaps due to its robust performance and tuning potential. Here are some key features of the SR20DET:
- 2.0 liters of displacement
- Turbocharged for increased power
- Strong aftermarket support
- Lightweight design, ideal for swaps
Preparing for the Swap
Before diving into the engine swap, it’s essential to prepare adequately. This preparation includes gathering the necessary tools, parts, and knowledge. Here’s a checklist to help you get started:
- Tools: socket set, wrenches, engine hoist, and more
- Parts: SR20DET engine, transmission, mounts, and wiring harness
- Knowledge: research the swap process and watch tutorial videos
Gathering the Necessary Parts
To achieve a successful SR20DET swap, you’ll need to source various parts. Here’s a breakdown of the essential components:
- SR20DET engine (complete with turbo and accessories)
- SR20DET transmission (preferably the 5-speed manual)
- Custom engine mounts for AE86
- Wiring harness specific to the SR20DET
- ECU compatible with the SR20DET
- Upgraded fuel pump and injectors
- Intercooler and piping
Engine Removal
With all parts gathered, the next step is to remove the existing engine from the AE86. Follow these steps:
- Disconnect the battery and remove the hood for better access.
- Drain fluids from the engine, including oil and coolant.
- Remove the intake and exhaust systems.
- Disconnect the wiring harness from the engine.
- Unbolt the engine mounts and transmission.
- Carefully lift the engine out using an engine hoist.
Installing the SR20DET
Once the AE86’s original engine is out, it’s time to install the SR20DET. Follow these steps for a seamless installation:
- Install the custom engine mounts into the AE86 chassis.
- Position the SR20DET engine into the engine bay.
- Secure the engine to the mounts and ensure proper alignment.
- Connect the transmission to the engine.
- Install the intercooler and connect the piping.
- Hook up the wiring harness and ECU.
Finalizing the Swap
With the SR20DET installed, it’s time to finalize the swap. This includes:
- Connecting the fuel lines and installing the upgraded fuel pump.
- Filling the engine with oil and coolant.
- Reconnecting the battery and double-checking all connections.
- Starting the engine and checking for leaks.
- Taking the car for a test drive to ensure everything functions properly.
Tuning and Performance Upgrades
After the swap, tuning the SR20DET is crucial for maximizing performance. Consider the following upgrades:
- ECU tuning for optimal fuel mapping
- Upgraded turbocharger for increased boost
- Performance exhaust system for better airflow
- Aftermarket intake for improved throttle response
Conclusion
Swapping an SR20DET into your Toyota AE86 can significantly increase horsepower, providing a more exhilarating driving experience. By following the steps outlined in this guide and ensuring proper preparation and tuning, you can achieve over 100 horsepower while maintaining the beloved characteristics of the AE86. Happy swapping!