BorgWarner EFR 9174 Turbo

BorgWarner EFR 9174 Turbo

The BorgWarner EFR9174 is a hybrid turbo that combines the turbine from 8374 with the compressor from 9180. EFR9174 is intended for applications that will push a turbo to the limit with high boost and critically high turbo shaft speed, especially at altitude. This unique turbo was designed to combine the high-flowing 91mm compressor with a fast spooling 74mm turbine wheel. RPM capabilities have also been improved with higher pressure ratios achieved at lower turbo shaft speed. The use of a 74mm turbine wheel allows for a max turbo speed of 125k RPM.

Compressor Specifications

• • Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
  • Compressor Wheel OD (exducer): 91mm
  • Compressor Wheel Inducer: 67.7mm
  • Max Flow Rate: 95 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

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 9174 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

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