Fa20 engine

Types of FA20 Engines

The FA20 engine is a 2.0-liter flat-four gasoline engine. Manufacturers mainly use it in sports cars. The Subaru FA20 engine is a naturally aspirated variant. On the other hand, Toyota uses the turbocharged version of the FA20 engine. Car brands that use the FA20 engine in their vehicles include the Subaru and Toyota.

Manufacturers design the FA20 engines for spirited driving. They have a high power output for their size. Additionally, they feature direct fuel injection for better fuel efficiency and emissions control.

• FA20D engine: The FA20D engine is another variant of the FA20 engine. It is a 2.0-liter inline-four engine with a Dual VVT-i system. The Dual VVT-i system controls the intake and exhaust valves' timing. As a result, it improves the engine's performance, emissions, and fuel economy. Manufacturers use the FA20D engine in models like the Camry and RAV4.
• FA20G engine: The FA20G engine is also a variant of the FA20 engine. It is a 2.0-liter inline-four engine with a VVT-i system. The VVT-i system optimizes the engine's performance and fuel efficiency. The FA20G engine is used in older models of the 86 and Subaru BRZ.

Below is a summary of the different types of the FA20 engine.

• Subaru FA20 engine: Naturally aspirated variant used in most Subaru models.
• Subaru FA20D engine: Dual VVT technology, used in older models of Subaru BRZ and 86.
• Subaru FA20G engine: Turbocharged variant, used in most Toyota and Subaru sports models.

FA20 Engine Specifications and Maintenance

• Displacement

  All models have a 2.0-liter (1987 cc) displacement. The Subaru FA20 engine uses metric designations for the cylinders, while the Toyota 4A family of engines uses metric designations for the cylinders.

• Configuration

  The FA20 is a flat-four (boxer) engine. The cylinders are arranged in two rows of four cylinders each at 180 degrees.

• Fuel type

  All models are designed to use unleaded fuel with an octane rating of 91 RON or higher.

• Fuel system

  The FA20 engines have an electronic fuel injection system (EFI) with dual port fuel injectors (one for each row of cylinders).

• Ignition system

  The FA20 engines have a distributor-less ignition system (DLI) with individual coils for each bank of cylinders.

• Cooling system

  The FA20 engines are water-cooled, and the cooling system uses a thermostat to regulate the engine's temperature.

• Oil system

  The FA20 engines have a pressurized oil system with a mechanical oil pump. The oil is filtered before it enters the engine, and the system has a gallery to distribute the oil to all the moving parts.

Choosing an FA20 Engine

The FA20 engine is not just a regular engine; it is a complex system that powers cars. When choosing an FA20 engine, it is important to consider several factors.

• Power needs: One needs to think about the amount of power required for driving. A higher-powered engine will be suitable for those who want a sportier drive. While a lower-powered engine will be suitable for those who drive more comfortably.
• Fuel efficiency: Consider the fuel efficiency of the engine. If one needs to make a lot of savings on fuel, then a more fuel-efficient engine will be the best choice.
• Driving experience: Consider the type of driving experience one wants. Some engines offer a more responsive and sporty feel, while others focus on smooth and comfortable driving.
• Budget: The initial cost and long-term maintenance costs should be considered when choosing an FA20 engine. Setting a budget is important to find an engine that fits within the affordable range.
• Environmental impact: Choosing an engine with lower emissions is important for those who are environmentally conscious. Some FA20 engines also have features that reduce emissions and make them more environmentally friendly.
• Engine size: The FA20 engine comes with different sizes. The size of the engine to choose will depend on the power requirements and the type of car one wants to drive.

How to DIY and Replace FA20 Engine

Replacing a Subaru FA20D or FA20G engine is a complex task that typically requires the expertise of a trained mechanic or automotive technician. However, for those with advanced mechanical skills and knowledge, here are the general steps for replacing an FA20 engine:

• Preparation: Disconnect the negative (-) battery cable. Drain the engine oil and coolant. Gather all necessary tools, including sockets, wrenches, hoist, and new gaskets and seals.
• Remove Accessories: Remove the air intake system, exhaust system, electrical connectors, power steering pump, alternator, starter motor, and other accessories connected to the engine.
• Engine Mounts: Remove the bolts securing the engine to the transmission and the engine mounts.
• Hoist and Support: Attach the engine hoist to the engine using appropriate lifting points and slings. Ensure the engine is adequately supported and secure.
• Engine Removal: Carefully lift the engine out of the engine bay using the hoist. Be cautious of clearance issues and ensure no components are damaged during removal.
• Engine Replacement: Transfer all necessary accessories, sensors, and components from the old engine to the new engine before installing the new engine.
• Reinstallation: Lower the new engine into the engine bay and secure it to the transmission and engine mounts. Reconnect all electrical, cooling, and exhaust systems.
• Fluids: Refill the engine with new engine oil and coolant.
• Testing: Start the engine and allow it to run for a few minutes. Check for any leaks, unusual noises, or warning lights. Ensure all systems function correctly.

Q and A

Q1: What is the FA20 engine?

A1: The FA20 engine is a 2.0-liter, four-cylinder boxer engine used in various Subaru and Toyota models. It is known for its low center of gravity, which helps improve vehicle stability and handling.

Q2: Which vehicles use the FA20 engine?

A2: The FA20 engine is used in several Subaru and Toyota models, including the Subaru BRZ, Toyota 86, and Toyota GT. These vehicles are known for their sporty performance and handling characteristics.

Q3: What is the difference between the FA20 and the FB20 engine?

A3: The FA20 and FB20 engines are both Subaru boxer engines. The main difference is that the FA20 is a petrol engine, while the FB20 is a diesel engine. Other than that, the FA20 and FB20 have similar designs and specifications.

Q4: What is the FA20D engine?

A4: The FA20D engine is a variant of the FA20 engine. It has dual overhead camshafts and is used in some high-performance models. The FA20D engine delivers more power and torque than the standard FA20 engine.

Q5: Is the FA20 engine reliable?

A5: The FA20 engine is generally considered reliable. However, like any engine, its reliability depends on proper maintenance and care. Users can expect good reliability from the FA20 engine with regular oil changes, coolant changes, and other routine maintenance tasks.