A turbine housing is a crucial component of a turbocharger system. It is also known as the “turbo hot side” due to its constant exposure to high temperatures of the exhaust gases. This component collects exhaust gases from the engine and directs them towards the turbine wheel to spin it, converting thermal energy into mechanical power to drive the turbocharger’s compressor and increase engine efficiency.
Investing in high-quality turbine housings also helps enhance engine performance by reducing backpressure and improving exhaust flow, which can further translate to better thermal durability and a longer lifespan of the turbo system. Thus, it is best to partner with a reputable manufacturer, like Noporvis, for your turbine housing needs.
At Noporvis, we specialize in providing custom turbo exhaust housing solutions tailored to meet specific performance requirements. Whether you need a unique A/R ratio or flange configurations, our expert team will work closely with you to deliver high-performance turbine housings optimized for your exact application.
Our Turbine Housing Volute Options
The volute refers to the internal passage within the turbine housing, through which exhaust gases flow from the inlet to the outlet. This passage reduces in the area along its length, increasing the velocity of the exhaust gases to efficiently drive the turbine wheel.
Noporvis offers two types of volute designs for our custom turbine housing: single-scroll volutes and twin-scroll volutes.
Single Scroll Turbine Housing (Open Scroll Turbine Housing)
A single scroll turbine housing features one continuous volute channel for the exhaust gases from all cylinders. While this simple design offers compactness and lower manufacturing costs, it can experience turbo lag due to exhaust gas interference, especially at lower RPMs.
As such, single-scroll volutes are typically better suited for higher-RPM applications, such as racing or high-speed driving, where sustained power and responsiveness at higher speeds is more critical than low-speed efficiency.
Twin Scroll Turbine Housing (Divided Turbine Housing)
Twin scroll turbine housings are equipped with two separate volute channels, designed to prevent exhaust pulses from interfering with one another. This design reduces turbo lag while improving low-end torque and spool-up time.
Furthermore, the features of twin-scroll volutes offer better drivability and fuel efficiency in urban or stop-and-go environments. This is why this type of volute is usually preferred for everyday vehicles and low RPM applications that require quick response times, even though it can be more complex and costly to manufacture.
Available Turbine Housing Flange Types
Turbine housing flanges serve as the attachment points for the inlet and outlet connections, ensuring proper alignment between the turbocharger components while providing a secure seal to maintain optimal exhaust gas flow.
At Noporvis, we offer a wide range of turbine housing flange shapes and sizes to suit diverse applications. Common options include:
- T25: It is designed for small to mid-sized turbochargers, commonly used in lower horsepower applications. It is ideal for compact engine setups where space constraints are a concern and efficiency at lower flow rates is required.
- T3: This type of flange offers a balance between costs and efficiency. It is versatile and suitable for most mid-range horsepower applications, making it a popular choice for vehicles aiming for moderate performance boosts.
- T4: These flanges are larger and optimized for mid to high-performance engines. They accommodate increased exhaust gas flow, making them suitable for applications requiring more significant power output, such as track vehicles or heavily modified cars.
- T6: This type of flange is the largest in its range and is engineered for high-horsepower setups. It is commonly used in high-performance racing or industrial engines, where maximum flow and durability are critical.
- V-Band: The V-band flange features a circular clamping mechanism for quick, easy installation and removal. It also has a robust, leak-free design to help enhance the reliability of the turbine housing. Due to its versatility, it is a popular option for both performance and OEM setups.
It is important to choose the correct flange type based on your turbocharger size and manifold configuration. Our team will always be ready to provide expert guidance to help you ensure compatibility and optimize the performance of your specific turbocharger setup.
Tailored Turbine Housing Sizes
Turbine housing sizes are defined by their Area Over Radius (A/R) ratio, which represents the ratio of the inlet area to the radius of the volute. Selecting the right turbine housing A/R depends on your engine’s power characteristics and intended use.
For instance, a smaller A/R ratio provides faster exhaust gas velocity, resulting in quicker spool times and reduced turbo lag, ideal for low-speed power delivery and responsive performance. However, smaller A/R can limit high-end power by increasing backpressure and reducing flow capacity at higher RPMs.
On the other hand, a larger A/R ratio allows for better exhaust flow by reducing backpressure and boosting peak engine power for efficiency at higher RPMs. Nevertheless, it delays boost response and may introduce turbo lag.
Rest assured, Noporvis offers fully custom A/R ratios for all turbine housing orders. By tailoring the A/R to your specific engine and performance goals, we can optimize the efficiency of your turbine housing.
Turbine Housing Material Selections
Noporvis creates turbine housing with high-quality materials, such as FCD iron, D5S alloy, and casting steel, chosen for their unique properties and can help ensure exceptional performance in diverse applications.
- Ferrous Casting Ductile (FCD) Iron: FCD is a form of cast iron with added nodular graphite inclusions. This structure gives it higher strength, flexibility, and resistance to thermal stress compared to conventional cast iron. It is ideal for handling high temperatures, providing excellent durability in high-performance and industrial-grade turbochargers that require stability.
- D5S Iron Alloy: D5S is a specialized high-nickel alloy designed to withstand extreme thermal cycling and fatigue. Its superior heat resistance makes it perfect for applications where turbochargers operate under continuous and intense temperature fluctuations, such as in racing or heavy-duty vehicles.
- Casting Steel: This material is a robust, versatile form of steel shaped through casting processes. It offers a balance between affordability and strength while delivering reliable performance under moderate thermal and mechanical stress. Its adaptability makes it a practical choice for most standard vehicles and various custom turbine housing designs.
By selecting the right material for your turbine housing, we can help you maintain the durability, heat resistance, and overall performance of this critical component.
Noporvis: Trusted Supplier for High-Performance Turbine Housings
Noporvis stands out as a trusted partner for high-performance turbine housings. We deliver top-tier products backed by our ISO 9001 certification, guaranteeing that every product meets rigorous quality assurance standards for reliability and consistency.
With our extensive experience and cutting-edge technology, we can cater to the unique needs of every customer, whether it’s for industrial applications, everyday use, or racing. Contact us today for a quote and experience unparalleled performance with our custom turbine housing solutions!
