Crazy Secrets to Pulling a Subaru WRX Engine Revealed!

The Subaru WRX is a legendary performance car known for its powerful boxer engine and rally-bred heritage. Whether you’re upgrading to a bigger and better powerplant, rebuilding your existing engine, or simply need to access the engine bay for maintenance, knowing how to pull the Subaru WRX engine is a valuable skill. This guide will walk you through the entire process, providing detailed instructions and tips to ensure a smooth and successful engine removal.

Getting Started: Essential Tools and Preparation

Before diving into the engine removal, gather the necessary tools and prepare your workspace. Here’s what you’ll need:

• Basic hand tools: Wrenches, sockets, screwdrivers, torque wrench, breaker bar
• Jack and jack stands: To safely lift the vehicle
• Engine hoist or crane: To safely lift and move the engine
• Protective gear: Gloves, safety glasses, and a respirator
• Shop manual: A Subaru WRX service manual is essential for detailed instructions and torque specifications
• Clean workspace: A clean and organized workspace will make the process much easier

Step 1: Disconnecting the Battery

Start by disconnecting the battery to prevent any electrical shorts or damage. Locate the battery in the engine bay and disconnect the negative (-) terminal first, followed by the positive (+) terminal.

Step 2: Removing Accessories and Components

Next, you’ll need to remove various components connected to the engine. This includes:

• Air intake: Disconnect the air intake hose and remove the air filter box.
• Cooling system: Drain the coolant and disconnect the radiator hoses.
• Fuel lines: Disconnect the fuel lines and cap the fuel lines to prevent leaks.
• Exhaust system: Disconnect the exhaust manifold and remove the exhaust system.
• Electrical connectors: Disconnect all electrical connectors attached to the engine, including sensors, wiring harnesses, and the engine control module (ECM).
• Accessories: Remove any accessories attached to the engine, such as the alternator, power steering pump, and AC compressor.

Step 3: Removing the Engine Mounts

With the accessories and components disconnected, you can now remove the engine mounts. The WRX has three engine mounts: one at the front, one at the rear, and one on the passenger side.

• Front engine mount: Locate the front engine mount and remove the bolts securing it to the engine and the chassis.
• Rear engine mount: Remove the bolts securing the rear engine mount to the engine and the chassis.
• Passenger side engine mount: Disconnect the passenger side engine mount and remove the bolts securing it to the engine and the chassis.

Step 4: Lifting the Engine

Now that the engine mounts are removed, you can use the engine hoist to lift the engine. Attach the hoist to the engine lifting points, ensuring it’s securely attached. Slowly lift the engine, keeping it level and avoiding any sudden movements.

Step 5: Disconnecting the Transmission

With the engine partially lifted, you can now disconnect the transmission. Disconnect the driveshaft and remove the transmission mount. Then, carefully separate the transmission from the engine.

Step 6: Removing the Engine

Once the transmission is disconnected, you can fully lift the engine out of the engine bay. Carefully guide the engine out of the vehicle, ensuring there’s enough clearance for the engine hoist and the engine itself.

Step 7: Cleaning and Inspecting

After removing the engine, take the opportunity to clean and inspect it. Remove any dirt, grime, or debris from the engine block, cylinder head, and other components. Inspect for any signs of damage or wear, such as cracks, leaks, or excessive wear on the bearings.

A New Beginning: Reassembly and Installation

Once you’ve completed the necessary repairs or modifications, you can reassemble the engine and install it back into the vehicle. Follow the same steps in reverse order, ensuring all components are properly installed and tightened to the correct torque specifications.

Final Thoughts: A Rewarding Journey

Pulling a Subaru WRX engine can be a challenging but rewarding experience. With careful planning, patience, and the right tools, you can successfully remove and replace the engine, unleashing the full potential of your WRX. Remember to always prioritize safety and consult a professional if you’re unsure about any part of the process.

Questions We Hear a Lot

Q1: What are some common reasons for pulling a Subaru WRX engine?

A1: Common reasons include engine rebuilds, upgrades to a different engine, or addressing major engine issues like head gasket failures or cylinder head damage.

Q2: How long does it take to pull a Subaru WRX engine?

A2: The time required varies depending on your experience and the specific modifications being made. However, a seasoned mechanic can typically complete the process in a few hours.

Q3: Are there any special considerations for pulling a Subaru WRX engine?

A3: The Subaru WRX engine is a boxer engine, which means the cylinders are horizontally opposed. This unique design requires careful attention to ensure the engine is lifted and moved correctly to avoid damage.

Q4: What are some tips for preventing damage to the engine during removal?

A4: Use a proper engine hoist, ensure the hoist is securely attached to the engine, and avoid sudden movements or dropping the engine. Also, be mindful of any fragile components like wiring harnesses and sensors.