Step-by-step Guide to Installing an S50 in Your E30 for 320+ Hp

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Installing an S50 engine in your E30 is an exciting project that can significantly boost your car’s performance. This guide will walk you through the steps required to install the S50 engine, ensuring you achieve over 320 horsepower.

What You Will Need

  • S50 engine
  • E30 chassis
  • Engine harness
  • Transmission
  • Motor mounts
  • Exhaust system
  • Fuel pump
  • Cooling system components
  • Basic hand tools
  • Torque wrench

Preparation Steps

Before you start the installation, it is essential to prepare your workspace and gather all necessary tools and parts. Follow these steps:

  • Clear and clean your workspace.
  • Gather all tools and parts listed above.
  • Disconnect the battery from your E30.
  • Remove any components that obstruct engine access, such as the hood and front bumper.

Engine Removal

To install the S50 engine, you first need to remove the existing engine from your E30. Follow these steps:

  • Drain fluids from the engine, including oil and coolant.
  • Disconnect the engine harness and any sensors.
  • Remove the exhaust system.
  • Unbolt the engine from the transmission.
  • Support the engine with an engine hoist and remove the motor mounts.
  • Carefully lift the engine out of the engine bay.

Preparing the S50 Engine

Once the old engine is removed, it’s time to prepare the S50 for installation. Here’s what you need to do:

  • Inspect the S50 engine for any damage or wear.
  • Install the new engine harness if necessary.
  • Attach the motor mounts to the S50 engine.
  • Ensure that the oil pan and timing cover are in good condition.

Installing the S50 Engine

With the S50 engine prepared, it’s time to install it into the E30. Follow these steps carefully:

  • Position the engine hoist over the E30 engine bay.
  • Lower the S50 engine into the engine bay, aligning it with the transmission.
  • Secure the engine by bolting it to the transmission.
  • Attach the motor mounts to the chassis.

Connecting Components

Once the engine is securely in place, you need to connect various components:

  • Reconnect the engine harness and all sensors.
  • Install the exhaust system, ensuring all connections are tight.
  • Install the cooling system components, including the radiator and hoses.
  • Install the fuel pump and connect the fuel lines.

Final Steps

Before you start the engine, complete these final steps to ensure everything is in order:

  • Double-check all connections and bolts for tightness.
  • Refill the engine with oil and coolant.
  • Reconnect the battery.
  • Install the hood and any other components removed during the process.

Testing the Installation

With everything in place, it’s time to test your installation:

  • Turn the ignition key to the ON position without starting the engine to prime the fuel system.
  • Start the engine and listen for any unusual sounds.
  • Check for leaks in the fuel and cooling systems.
  • Allow the engine to reach operating temperature and monitor the oil pressure.

Conclusion

Installing an S50 engine in your E30 is a rewarding project that can enhance your driving experience. By following this guide step-by-step, you can achieve the desired power output and enjoy the performance of your upgraded vehicle.