Adam breaks down the specs and compares the Garret G-Series Turbo to the Borg-Warner EFR Turbo.
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BORG WARNER EFR 7670
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Low Inertia Turbine Wheel
Gamma-Ti turbine wheel cuts turbine inertia by roughly 50% dramatically improving turbo response. Turbine sizes range from 55 to 80mm in exducer diameter.

Heat Resistant Turbine Housings
Investment cast stainless steel turbine housings improve durability and offer an offer extremely smooth internal flow channel. Turbine housings have thin walls to reduce weight and thermal inertia.

High Turbine Efficiency
Superback” and “Fullback” back-disk shapes offer very high efficiencies. The Superback shape adds a curved profile to the back-disk and has the effect of lowering centrifugal stress and permitting higher rotational speeds.

Enhanced Turbo Response
EFR turbochargers use a dual-row ball bearing cartridge with ceramic balls and metal cage. This bearing system provides substantial friction reduction at low turbo speeds and in the process helps improve turbo response. Metal cage improved the durability of the ball bearing assembly

Flexible Compressor Cover
The EFR turbo “large” cover has a dual-machined outlet, both for a hose connection and a v-band connection.

Simplified Installation
Integrated compressor recirculation valve (CRV) to help avoid compressor surge and backflow during a throttle lift event. This feature helps to simplify the installation task and lowers overall system install cost.

Forged Milled Compressor Wheels (FMW)
EFR turbos contain wheels that are fully milled from forged aluminum, commonly known as “billet”. Cut from custom forgings, their strength exceeds that which is available from typical bar-stock and also exceeds the material properties of an aluminum casting

Sensor Mounting Convenience
Speed sensor mounting provisions are also supplied on every compressor cover. Speed sensors are sold separately.

Boost Control Solenoid Valve (BCSV)
A boost control solenoid valve (BCSV) is included with every EFR turbo.

High Flow Wastegates
Purpose designed large wastegate ports give the wastegated EFR turbos the capability of handling the flow requirements of high performance applications.

Ease of Orientation
Turbo orientation flexibility is facilitated by the wastegate bracket to bearing housing mounting arrangement.

Adjustable Wastegate
The fabrication and installation task is simplified with wastegated EFR models that feature adjustable wastegates available in three different canister sizes.

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GARRETT G30-660 G-SERIES 3067R TURBO
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The Most Powerful Small Frame Turbo On The Market
Garrett’s all new G3067R is the newest release in the 2019 G-Series turbocharger lineup. A clean-slate ball bearing turbo with state of the art aerodynamics, this turbo is smaller and outflows all comparable products on the market. New compressor and turbine aero combined with exotic high temperature alloys allowed engineers to push the limits of performance. Carrying nothing over from the old gen GT/GTX – the G-series 67mm exducer billet compressor wheel redefines what we thought was possible for a given airflow range – flowing +12 lbs/min (+24.5% gain) compared to the outgoing GTX3067R Gen II turbo it supercedes.

Max turbo speed is 165krpm and max temp is 1050C/1922F. G30-660 Compressor housings use a traditional 3″ inlet and 2″ hose outlet with fully machined Speed Sensor Port. The Improved ported shroud inlet design offers maximum surge-resistance with huge flow rates in a compact outline. Available in standard rotation and reverse rotation options for enthusiasts that want the perfect twin turbo installation or a single reverse rotation turbo for applications with installation restrictions. Sold as Complete Assembly with Supercore and Turbine Housing.

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