What is the A/R ratio on this turbocharger and why does it matter?

The A/R ratio on the turbine housing is 0.85. This measurement relates to the size and shape of the exhaust housing's volute. A lower A/R ratio generally leads to quicker turbocharger spool-up, while a higher A/R ratio can improve top-end power by reducing exhaust backpressure.

What does VOF WG mean in the product name?

VOF WG stands for 'V-Band Outlet Flange Wastegate'. This indicates that the turbocharger features an internal wastegate and uses a V-band flange for the exhaust outlet, which can simplify installation and sealing compared to traditional bolted flanges.

What supporting modifications are typically needed for a turbocharger like this?

Installing a turbocharger of this caliber usually requires significant supporting modifications. This often includes upgrading the fuel system, engine management tuning, a more efficient intercooler, and potentially strengthening internal engine components to handle the increased power.

BorgWarner EFR Turbocharger 11639880005

Name: BorgWarner Turbocharger EFR B1 7163F 0.85 a/r VOF WG
Brand: BorgWarner
SKU: borgwarner-borgwarner-turbocharger-efr-b1-7163f-0-85-a-r-vof-wg-t14-4385204
Price: 2668.57 USD
Availability: BackOrder

BorgWarner Turbocharger EFR B1 7163F 0.85 a/r VOF WG

$2668.57

On Backorder

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BorgWarner Turbocharger EFR B1 7163F 0.85 a/r VOF WG

Key Features

Fits custom performance applications.
71mm compressor wheel and 63mm turbine wheel for balanced airflow.
0.85 A/R turbine housing promotes quick spool and strong top-end power.
Internal wastegate (VOF WG) simplifies installation and boost control.
Cast stainless steel turbine housing offers heat and corrosion resistance.
Aluminum compressor cover contributes to a manageable overall weight.

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Product Details

If you're building a high-performance engine and looking to significantly increase power output, a turbocharger like the BorgWarner EFR B1 7163F is a critical component. This turbocharger is designed for custom applications where maximizing airflow and boost pressure is the primary goal. It's a well-built unit that BorgWarner is known for, offering a robust solution for serious engine builds.

The EFR B1 7163F features a 71mm compressor wheel and a 63mm turbine wheel, providing a good balance for a wide range of engine sizes and applications. The 0.85 A/R (Area/Radius) ratio on the turbine housing helps to spool the turbo quickly while still allowing for good top-end power. This specific model includes an internal wastegate (VOF WG), which simplifies installation by managing boost pressure directly within the turbo assembly. The turbine housing is made from cast stainless steel, offering good resistance to heat and corrosion, which is essential for the demanding environment a turbocharger operates in. The compressor cover is made from aluminum, keeping the overall weight manageable.

This turbocharger is a substantial upgrade for any performance build. It's important to note that this unit is not CARB approved and cannot be shipped to California. Proper supporting modifications, including fuel system upgrades, engine management tuning, and exhaust work, are necessary to take full advantage of its capabilities and ensure reliable operation. Always consult with your engine builder or a performance tuning specialist to confirm compatibility and installation requirements for your specific project.