Garrett GTX3071R GEN II GTX-Series Turbo's - Reverse Rotation

Unsure about fitment or need a reccomendation? Get in touch at [email protected] or see our RB/SR Specific JDMGarageUK Turbo Kits.

Various FAQ, write ups and further information can be found on the Garrett Website

Q: What are the Garrett Motion GTX turbos?

A: Turbochargers manufactured by Garrett Motion. These turbos are designed for high-performance applications and are commonly used in race cars and modified street vehicles.

Q: What are the differences between these turbos?

A: The main difference between these turbos is their maximum horsepower output. For example the GTX3071R Supports around 340 - 675 Horsepower on cars with a Displacement between 1.8L to 3L.

Q: What vehicles are compatible with the turbos?

A: The Garrett Motion GTX series turbos can be used in a variety of vehicles, but they are primarily designed for use in high-performance sports cars and modified street cars. The specific compatibility will depend on the vehicle and the specific turbo being used.

Q: What are the benefits of using a GTX series turbo?

A: The GTX series turbos offer a number of benefits for high-performance applications, including increased horsepower and torque output, improved throttle response, and greater boost efficiency. They are also known for their durability and reliability, making them a popular choice among enthusiasts and professional racers.

Q: What other components are needed to install a GTX series turbo?

A: In addition to the turbocharger itself, installation of a GTX series turbo will typically require additional components such as intercoolers, intake piping, exhaust systems, and engine management software. The specific components needed will depend on the vehicle and the specific turbo being used.

Q: What is a turbo A/R size?

A: The A/R size is a measurement of the turbo housing's aspect ratio. It is the ratio between the cross-sectional area of the turbine housing and the distance from the centerline of the turbine wheel to the housing wall.

Q: How does A/R size affect turbo performance?

A: A/R size affects the turbo's performance by influencing the speed at which the exhaust gas flows through the turbine. A smaller A/R size will result in faster spool-up, but less overall power potential, while a larger A/R size will have a slower spool-up but greater top-end power potential.

Q: How do I choose the right A/R size for my turbo?

A: Choosing the right A/R size for your turbo depends on the specific requirements of your engine and the type of driving you plan to do. Generally, a smaller A/R size is better for street-driven cars, while larger A/R sizes are better suited for race cars or high-performance engines.

Q: What are the common A/R sizes available for turbos?

A: Common A/R sizes for turbos range from 0.35 to 1.5, with smaller sizes being more common for gasoline engines and larger sizes for diesel engines. However, there is no set standard for A/R sizing, and it can vary greatly between different turbo models.

Q: Can I change the A/R size of my turbo?

A: The A/R size of a turbo is determined by the size of the turbine housing, so it is not possible to change the A/R size without replacing the turbine housing. However, some manufacturers offer interchangeable housings, which can allow you to change the A/R size of your turbo. This is just one more advantage of using a Garrett turbo.

Q: What are the pros and cons of different A/R sizes?

A: Smaller A/R sizes offer faster spool-up and better low-end response, but less top-end power potential. Larger A/R sizes offer greater top-end power potential, but slower spool-up and reduced low-end response. The ideal A/R size depends on the specific requirements of your engine and the type of driving you plan to do.

Q: What is the difference between a divided and undivided turbine housing?

A: A divided turbine housing has a partition separating the turbine wheel's inlet and outlet, while an undivided turbine housing has a single chamber for the exhaust gas to flow through. Divided housings can offer improved performance by reducing exhaust gas interference and improving flow to the turbine wheel.

Q: How does the A/R size affect the choice between a divided or undivided turbine housing?

A: The A/R size of the turbine housing can affect the choice between a divided or undivided housing. Generally, larger A/R sizes are better suited for divided housings, as they can take advantage of the improved exhaust gas flow. Smaller A/R sizes can work well with either type of housing, depending on the specific requirements of your engine.

Q: What is a standard turbo?

A: A standard turbo is a turbocharger in which the compressor is located at the front and the turbine at the rear of the turbo housing. The airflow direction through the turbo is from the compressor to the turbine.

Q: What is a reverse turbo?

A: A reverse turbo, also known as a reverse rotation or backwards rotation turbo, is a turbocharger in which the compressor is located at the rear and the turbine at the front of the turbo housing. The airflow direction through the turbo is from the turbine to the compressor.

Q: What are the benefits of a reverse turbo?

A: A reverse turbo can provide improved packaging and fitment options for certain applications, especially those with limited space or tight engine bays. They can also offer improved throttle response and reduced turbo lag in some cases.

Q: What are the downsides of a reverse turbo?

A: Reverse turbos can be less efficient than standard turbos due to increased pressure losses and reduced compressor efficiency. They can also require different oil and coolant routing compared to standard turbos, which can add complexity and cost.

Q: Can I switch between a standard and reverse turbo on my engine?

A: Switching between a standard and reverse turbo on an engine can be difficult or impossible due to differences in the turbo housing and orientation. It is generally best to choose a turbo configuration that is designed for your specific application and stick with it.

Q: Which type of turbo is more commonly used?

A: Standard turbos are more commonly used in most applications, as they offer good efficiency and performance while being easier and more cost-effective to manufacture. However, reverse turbos can be found in some high-performance and racing applications where space constraints or packaging considerations make them a better option.

Q: Can I upgrade to a reverse turbo for better performance?

A: Upgrading to a reverse turbo for better performance may not be the best option for all engines. It depends on the specific application and requirements of the engine. In some cases, a reverse turbo may provide improved performance, but in others, a standard turbo may be a better choice. Consult with a qualified turbo specialist to determine the best option for your engine.

Q: What are some examples of engines that use reverse turbos?

A: Some engines that use reverse turbos include the Subaru Impreza WRX and STI, Mitsubishi Lancer Evolution, and certain Porsche models.

Q: What is a turbo oil restrictor?

A: A turbo oil restrictor is a small device used to reduce the amount of oil flowing to the turbocharger's bearings. It is typically used in high-performance or racing applications where excessive oil flow to the turbocharger can cause bearing damage.

Q: Why do turbochargers need oil?

A: Turbochargers need oil to lubricate the bearings and prevent them from overheating or seizing. The oil also helps to cool the turbocharger and remove heat generated by the turbo.

Q: What happens if there is too much oil flow to the turbocharger?

A: If there is too much oil flow to the turbocharger, it can cause excessive oil pressure and damage the turbocharger bearings. This can lead to oil leakage, decreased turbocharger performance, and potential engine damage.

Q: How does a turbo oil restrictor work?

A: A turbo oil restrictor works by reducing the amount of oil flowing to the turbocharger's bearings. It does this by creating a smaller oil passage, which restricts the oil flow and reduces the oil pressure entering the turbocharger.

Q: What are the common sizes of turbo oil restrictors?

A: The most common sizes for turbo oil restrictors are 0.030-inch and 0.060-inch diameter. However, the size of the restrictor needed will depend on the turbocharger and engine application.

Q: Can I install a turbo oil restrictor on any turbocharger?

A: Not all turbochargers require a restrictor, and some may even require additional oil flow for proper lubrication. It is important to consult with a qualified turbocharger specialist to determine whether a restrictor is necessary and what size restrictor is appropriate for your specific application.

Q: How is a turbo oil restrictor installed?

A: Turbo oil restrictors are typically installed between the engine's oil supply line and the turbocharger's oil inlet. They can be installed in the oil line or directly in the turbocharger housing, depending on the specific turbo and engine setup.

Q: What are the benefits of using a turbo oil restrictor?

A: Using a turbo oil restrictor can help to prevent damage to the turbocharger's bearings and extend its lifespan. It can also help to maintain consistent oil pressure and reduce the risk of oil leakage.

Q: What is a turbo wastegate?

A: A turbo wastegate is a device used to regulate the boost pressure of a turbocharged engine. It works by diverting some of the exhaust gas away from the turbine wheel of the turbocharger, which limits the amount of boost pressure that the turbocharger can produce.

Q: Why do turbocharged engines need a wastegate?

A: Turbocharged engines need a wastegate to prevent over-boosting, which can lead to engine damage or failure. By regulating the boost pressure, the wastegate helps to ensure that the engine operates within safe limits.

Q: How does a wastegate work?

A: A wastegate works by diverting some of the exhaust gas away from the turbine wheel of the turbocharger. This is achieved through a valve that is typically controlled by a vacuum or electronic solenoid. When the boost pressure reaches a predetermined level, the wastegate valve opens, allowing some of the exhaust gas to bypass the turbine wheel and reduce the boost pressure.

Q: What are the different types of wastegates?

A: There are two main types of wastegates: internal and external. Internal wastegates are built into the turbocharger housing, while external wastegates are mounted separately on the exhaust manifold or downpipe.

Q: What are the advantages of an external wastegate?

A: External wastegates offer several advantages over internal wastegates. They can be more precise in regulating boost pressure, provide better flow characteristics, and allow for more flexibility in turbocharger and exhaust system configurations.

Q: Can a wastegate be adjusted?

A: Yes, wastegates can be adjusted to change the boost pressure of a turbocharged engine. This is typically done by changing the preload on the wastegate actuator, which controls the opening pressure of the wastegate valve.

Q: What happens if a wastegate fails?

A: If a wastegate fails, it can lead to over-boosting and potentially cause engine damage or failure. Signs of a failing wastegate can include inconsistent boost pressure, poor engine performance, and unusual sounds coming from the turbocharger or wastegate.

Q: How can I diagnose wastegate problems?

A: Wastegate problems can be diagnosed through a combination of visual inspection, vacuum and pressure testing, and data logging. It is recommended to consult with a qualified turbocharger specialist to properly diagnose and address any wastegate issues.

Q: What is a turbo flange?

A: A turbo flange is a component that connects the turbocharger housing to the engine's exhaust system. It is designed to create a secure and leak-free seal between the turbocharger and the exhaust piping.

Q: What are the different types of turbo flanges?

A: There are several types of turbo flanges, including T3, T4, V-Band, and Twin-Scroll flanges. The type of flange needed will depend on the specific turbocharger and engine application.

Q: What is a T3 flange?

A: A T3 flange is a commonly used turbo flange that has three bolt holes and a circular shape. It is often used on smaller turbochargers and in applications where space is limited.

Q: What is a T4 flange?

A: A T4 flange is a larger turbo flange that has four bolt holes and a rectangular shape. It is often used on larger turbochargers and in high-performance or racing applications.

Q: What is a V-Band flange?

A: A V-Band flange is a type of turbo flange that uses a V-shaped clamp to secure the turbocharger housing to the exhaust piping. It is typically used on high-performance and racing applications where quick and easy installation and removal is desired.

We would highly reccomend using a V-Band Flange

Q: What is a Twin-Scroll flange?

A: A Twin-Scroll flange is a turbo flange that is designed for use with a twin-scroll turbocharger. It features two separate exhaust ports that are designed to improve exhaust gas flow and reduce turbo lag.

Q: Can turbo flanges be interchanged?

A: Turbo flanges are specific to the turbocharger and exhaust system that they are designed for, and are not interchangeable between different types of flanges. It is important to choose the correct flange for your specific application to ensure a proper fit and a leak-free seal.

Q: What materials are turbo flanges made from?

A: Turbo flanges are typically made from high-strength materials such as stainless steel or titanium. These materials are resistant to heat and corrosion, and can withstand the high pressures and vibrations associated with turbocharged engines.

Garrett Motion is a cutting-edge technology company that specializes in developing and manufacturing turbochargers, electric-boosting technologies, and automotive software solutions. With a history spanning over 60 years, Garrett Motion has established itself as a leading innovator in the automotive industry, helping to improve fuel efficiency, reduce emissions, and enhance overall vehicle performance.

Headquartered in Switzerland, Garrett Motion operates in more than 30 countries worldwide, with a diverse team of over 6,000 talented professionals. With a focus on innovation, quality, and sustainability, Garrett Motion is committed to delivering the highest level of customer satisfaction and driving the industry towards a cleaner, more efficient future.