Can you put a turbo engine in a non turbo Subaru?
Subaru enthusiasts often wonder if it's possible to upgrade their non-turbo Subaru with a turbocharged engine. The short answer is yes, it is possible, but the process is complex and requires careful planning, technical expertise, and a significant investment. In this article, we’ll explore the key considerations, challenges, and steps involved in making this modification.
Understanding the Basics of Turbocharging
A turbocharger is a device that forces more air into the engine's combustion chamber, allowing it to burn more fuel and produce more power. Turbocharged engines are designed with specific components to handle the increased pressure and heat generated by the turbo system. Non-turbo engines, on the other hand, lack these reinforcements, which makes the conversion process more challenging.
Key Considerations Before Starting
Before diving into the project, there are several factors to consider:
- Compatibility: Not all Subaru models are easily compatible with turbocharged engines. Research your specific model to determine if the swap is feasible.
- Budget: Engine swaps can be expensive. Beyond the cost of the turbo engine itself, you’ll need to account for additional parts, labor, and potential unforeseen expenses.
- Technical Expertise: This is not a beginner-level project. It requires advanced mechanical skills and knowledge of Subaru’s engine systems.
- Legal and Emissions Compliance: Ensure the modification complies with local laws and emissions regulations to avoid fines or issues during inspections.
Steps to Install a Turbo Engine in a Non-Turbo Subaru
If you’ve decided to move forward, here’s a general outline of the process:
- Choose the Right Turbo Engine: Select a turbo engine that is compatible with your Subaru model. Popular choices include the EJ20 or EJ25 engines found in turbocharged Subaru models like the WRX or STI.
- Upgrade Supporting Components: Non-turbo Subarus lack the necessary components to handle a turbo engine. You’ll need to upgrade the following:
- Fuel system (fuel pump, injectors, and lines)
- Cooling system (radiator and intercooler)
- Exhaust system (turbo-compatible exhaust)
- Transmission (to handle the increased power)
- Install the Turbo Engine: Remove the existing engine and install the turbo engine. This step requires precision and may involve custom fabrication for mounts and connections.
- Update the ECU: The engine control unit (ECU) must be reprogrammed or replaced to manage the turbo engine’s performance and ensure proper operation.
- Test and Tune: After installation, thoroughly test the vehicle and fine-tune the engine to optimize performance and reliability.
Challenges and Risks
While the idea of turbocharging your Subaru is exciting, it’s important to be aware of the challenges:
- Cost: The total cost of the project can easily exceed the value of the car, especially if professional labor is required.
- Reliability: Improper installation or inadequate supporting components can lead to engine failure or other mechanical issues.
- Time-Consuming: This is a time-intensive project that may take weeks or even months to complete.
Conclusion
Installing a turbo engine in a non-turbo Subaru is a rewarding but challenging project. It requires careful planning, a solid budget, and advanced mechanical skills. If you’re up for the challenge, the result can be a powerful and unique Subaru that stands out on the road. However, for those who lack the expertise or resources, it may be more practical to purchase a factory turbocharged Subaru instead.
At Kevin’s Autos, we specialize in engine swaps and performance upgrades. If you’re considering a turbo conversion, feel free to contact us for expert advice and professional service. Let’s make your Subaru dreams a reality!
Frequently Asked Questions
Can I convert normal engine to turbo?
To carry out a conversion on a naturally aspirated engine, the following modifications to the engine would need to be undertaken to effectively complete the retrofit: Fabrication of both inlet and exhaust manifolds to fit the specific application, The camshaft specification should also be checked to ensure that the ...
Is it legal to put turbo on my car?
Turbochargers are not illegal in the United States, as most diesel engines are designed to use a turbo.
How do I know if my engine can handle a turbo?
First, you need to check whether your engine can handle a turbocharger. This can be done by checking the engine's health. Compression and leak-down tests are the two commonly done tests on engines before turbos are installed. Turbochargers need air pressure to work properly.
How much does it cost to add a turbo?
The typical cost of installing a turbocharger in a car is approximately $3,000 to $5,000. However, it's essential to note that this estimate is subjective and can vary based on individual circumstances.
Is it better to have a turbo or no turbo engine?
The turbocharged option is more recommended for those who use their car on long roads, in uphills, or in rough patches. The turbocharged engine allows acceleration, more power, and greater vehicle control. The normal engine is more recommended for city life.
Can I turbo a non-turbo Subaru?
The easy way would be to use an Accessport and a turbo-car ECU, and have it custom-tuned on the dyno, but then you'd have to acquire a turbo ECU (more money), and is the ECU wiring harness identical between the two cars? They are almost certainly not, so you would need to re-wire the ECU wiring harness.
Can you put a turbo engine in a non turbo car?
It is possible to add a turbo to any engine that doesn't have one. However, the success of this process depends on careful preparation and following the necessary steps. This includes upgrading the ECU, enhancing the clutch system, overhauling the fuel system, and upgrading the internal engine components.
How much does it cost to turbo a non turbo car?
The turbo can cost at least $1,500, while labor will typically run $500 or more. However, the type of car you drive and the engine it has will impact the final price you pay. For example, replacing a twin-turbo system, which is common on performance vehicles that have V6 or V8 engines, can cost up to $6,000.
How to convert non-turbo to turbo?
With a turbo kit, it becomes a simple matter of removing the factory exhaust manifold, and bolting the aftermarket turbo kit onto the engine. Next step is preparing the turbocharger for fitment, bolting it on, and bolting on the associated supporting parts.
How hard is it to add a turbo to a car?
Installing a turbo isn't hard for any individual who has the time and tools needed. But it does require a significant time investment and careful preparation before beginning the process.
