BorgWarner EFR 9274 Turbo

BorgWarner EFR 9274 Turbo

Representing the next evolution of the wildly popular EFR9174, the BorgWarner EFR9274 is the highest flowing 74mm turbine EFR turbo.  Recommended for competitive drift and time attack application (especially at altitude), this unique turbo was designed specifically by BW engineering to combine the highest flowing 91mm compressor exducer with a 72mm compressor inducer to allow the same footprint to breathe a LOT better up top.

The BorgWarner 9274 is intended for setups that will push a turbo to the limit with high boost and critically high turbo shaft speed.  Higher pressure ratios are achieved at lower turbo shaft speed. Using the same 74mm Gamma-Ti turbine wheel from the EFR9174, this turbo flows an impressive 106lbs/min of air at 125k RPM maximum shaft speed.

Compressor Specifications

• Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
• Compressor Wheel OD (exducer): 91mm
• Compressor Wheel Inducer: 72mm
• Max Flow Rate: 106 lb/min
• Built-in BOV: All EFR compressor housings incorporate an integrated compressor recirculation valve
• Compressor Inlet: 4″ Ported Shroud Hose Coupler
• Compressor Outlet: 2.5″ Hose Coupler w/ integrated Vband option

Turbine Specifications

• Turbine Type: Low Inertia Gamma-Ti Turbine Wheel
• Turbine Wheel OD: 74mm
• Stainless Steel Turbine Housing
• Turbine Outlet: GT V-Band (aka 3″ V-Band) ~92mm OD for all EFR turbos

Compressor Map

Features

• Dual Row Ceramic Ball Bearings—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 to 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 the 9274:

This turbo is the 2nd largest turbocharger in the EFR Black Series.  The EFR Black means their highest flowing compressor possible for the 74mm turbine wheel.  This 9274 has become a staple for professional drifting, used by Fred Aasbo, Ryan Tuerck, Jhonattan Castro, Ryan Litteral and more.  Note - 9274 spools a little earlier and is more resistant to overspeed than the 9280 but will have higher backpressure at high rpm and high boost.  

If you have questions about this product or its installation, contact us.