What is the primary advantage of the ceramic-ball bearing CHRA in this turbo?

The ceramic-ball bearing center housing rotating assembly (CHRA) significantly reduces friction compared to traditional journal bearings. This allows the turbo to spool up faster, reach full boost sooner, and operate more reliably under high-stress conditions.

What kind of supporting modifications are typically needed for this turbocharger?

Installing a turbocharger of this caliber usually requires an upgraded fuel system to supply adequate fuel, an engine management system for proper tuning, and custom exhaust and intake plumbing to connect the turbo to your engine and exhaust system.

What is the significance of the 0.92 A/R ratio on the turbine housing?

The 0.92 A/R ratio on the turbine housing influences the turbocharger's performance characteristics. A larger A/R like this generally favors top-end power and can help reduce backpressure at higher RPMs, though it might slightly delay initial spool compared to a smaller A/R.

BorgWarner Turbocharger EFR B2 7064 179389

Name: BorgWarner Turbo EFR B2 7064 0.92 a/r VTF WG
Brand: BorgWarner
SKU: borgwarner-borgwarner-turbo-efr-b2-7064-0-92-a-r-vtf-wg-t14-4385389
Price: 2969.50 USD
Availability: BackOrder

BorgWarner Turbo EFR B2 7064 0.92 a/r VTF WG

$2969.50

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

BorgWarner Turbo EFR B2 7064 0.92 a/r VTF WG

Key Features

BorgWarner EFR B2 7064 turbocharger with a 0.92 A/R turbine housing.
Features a 70mm compressor wheel and a 64mm turbine wheel for a balance of airflow and responsiveness.
Includes an integrated wastegate (VTF WG) for simplified setup and boost control.
Utilizes a ceramic-ball bearing center housing rotating assembly (CHRA) for reduced friction and faster spool.
Turbine housing is constructed from high-silicon molybdenum ductile iron for thermal shock resistance.
Designed to support approximately 500-700 horsepower applications.

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Product Details

This is the BorgWarner EFR B2 7064 turbocharger, a well-built unit designed for serious performance builds. It features a 70mm compressor wheel and a 64mm turbine wheel, with a 0.92 A/R (Area/Radius) ratio on the turbine housing. This specific model includes an integrated wastegate (VTF WG), simplifying installation and control for many applications. The EFR series is known for its advanced design, offering improved spool times and broader powerbands compared to many stock or older aftermarket turbochargers.

The EFR B2 7064 is constructed with durable materials to withstand the high temperatures and pressures associated with boosted engines. Its ceramic-ball bearing center housing rotating assembly (CHRA) is a key feature, reducing friction and allowing the turbo to reach full boost faster and more reliably than journal bearing turbos. The turbine housing is made from a high-silicon molybdenum ductile iron, which offers good resistance to thermal shock. This turbo is a popular choice for enthusiasts looking to significantly increase horsepower and torque on a wide range of performance vehicles, often used in applications aiming for 500-700 horsepower.

When installing this turbocharger, ensure you have the necessary supporting modifications, such as an upgraded fuel system, engine management tuning, and appropriate exhaust and intake plumbing. Proper oil and coolant lines are critical for longevity, so refer to BorgWarner's installation guidelines for specific requirements. Please note that this turbocharger is not CARB approved and cannot be shipped to California.