BorgWarner EFR 9174 Turbocharger

The EFR 9174 is a brand new release for 2016 from BorgWarner Turbo Systems. This hybrid turbo uses the lightweight alloy bearing housing derived from Indycar with a 67mm inducer compressor. EFR 9174 is intended for applications that will push a turbo to the limit with high boost and critically high turbo shaft speed. This unique turbo was designed specifically by BW engineering to combine the high flowing 91mm compressor with a fast spooling 74mm turbine wheel. The use of a 74mm turbine wheel allows for a max turbo speed of 125k RPM vs 116k for the bigger EFR9180.

Compressor Specs

• • 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 BOV.
  • Inlet: 4″ Ported Shroud Hose Coupler
  • Outlet: 2.5″ Hose Coupler w/ integrated Vband option

Turbine Specs

• 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 oil control orifice – (aka oil restrictor) **no restrictor can be used with EFR turbos
• Watercooled Center Section – water cooling 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

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