BorgWarner's EFR 7670 is ideal for responsive autocross, road racing, and time attack applications.
The BorgWarner EFR 7670 Turbo Is Perfect for Single or Twin-Turbo Applications
BorgWarner's EFR 7670 is ideal for responsive autocross, road racing, and time attack applications. The EFR 7670 delivers an early spool with a healthy 64lb/min compressor flow, It is an excellent fit for use in single turbo applications for the 400-600hp range (up to 2.6L), or as twin turbo applications 700-1100hp.
BorgWarner utilizes their 70mm Gamma-Ti turbine wheel as the optimal match for the 57.2mm inducer / 76mm exducer FMW compressor for an unmatched response. This turbo uses the mid-size EFR ported-shroud compressor housing, with a 3.5" inlet and 2.0" outlet. It features ceramic ball bearings, giving you more responsive power and extreme durability. We recommend watercooling for this turbo.
Compressor Specifications
Compressor type: Forged-Milled Wheel (FMW) Extended Tip
Compressor wheel OD Exducer: 76mm
Compressor wheel Inducer: 57.2mm
Max flow rate: 64 lb/min
Built-in BOV: All EFR compressor housings incorporate an integrated compressor recirculation valve
Compressor inlet: 3.5″ Ported Shroud Hose Coupler
Compressor outlet: 2.0″ Hose Coupler w/ integrated Vband option
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Turbine Specifications
Turbine type: Low Inertia Gamma-Ti Turbine Wheel
Turbine wheel OD: 70mm
Stainless steel turbine housing
Turbine outlet: GT V-Band (aka 3″ V-Band) ~92mm OD for all EFR turbo
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Features
Dual row ceramic ball bearings offer the lowest friction and fastest spool/response, most extreme durability, built-in 2mm oil restrictor
Watercooled center section—watercooling is recommended, 14mm banjo bolts
Double seals on both turbine and compressor end for extreme durability and resistance to any oil seepage
Boost control solenoid valve integrated into the compressor housing
Integrated speed sensor mounting provisions
Optional Turbo Speed Sensor Kit
Optional Turbo Speed Gauge
The EFR 9274 is available in (4) different turbine housing configurations:
0.83 A/R T3 Undivided (Internal WG) #12741008000
0.92 A/R T4 Twin Scroll (Internal WG) #12741008001
1.05 A/R T4 Twin Scroll (External WG) #12741019002
1.45 A/R T4 Twin Scroll (External WG) #12741008003
Why We Love It:
The EFR 7670 is one of our all time favorite "do everything well" turbos. Our head engineer runs it on his 2.3L Evo8 and many happy people have used it on everything from K series Honda engines to Subarus, Evos, 1JZ's and everything in between. In T3 configuration this is a direct fit for Nissan RB20 and RB25 engines. Awesome response. great spool and up to 600hp. Â
Recommended Optional Accessories
Up your turbocharged game a little more with the following accessories:
Full-Race 3" EFR V-band Clamp
Borgwarner ERF 3" Downpipe V-band Flange
Turbo Speed Sensor Kit
Turbo Speed Gauge TSG-1