BorgWarner EFR 8374 Turbo (12839097000)

EFR 8374 is engineered to support big power levels yet spool fast enough for professional time attack teams. The 74mm Gamma-Ti turbine wheel is an optimal match for the 62.6mm inducer / 83mm exducer FMW compressor wheel and is capable of 79lb/min airflow. This is one of the most exciting turbos in the EFR lineup for the high-power addicts. This turbo has the largest EFR compressor housing and is ideal for use in single turbo applications for the 500-800hp range, or as twin turbo applications up to 1300hp. Ceramic Ball Bearing only, watercooling optional (recommended)

Compressor Specifications

• Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
• Compressor Wheel OD (exducer): 83mm
• Compressor Wheel Inducer: 62.6mm
• Max Flow Rate: 79 lb/min
• Built-in BOV: All EFR compressor housings incorporate an integrated BOV.
• Compressor Housing Connections:
  • Inlet: 4? Ported Shroud Hose Coupler
  • 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 - The EFR 8374 is available in (3) different turbine housing configurations, all use 3? vband (92mm OD): [list]
• 0.83 A/R T3 Single Scroll (Internal WG) - Part # 179258
• 0.92 A/R T4 Twin Scroll (Internal WG)- Part # 179357
• 1.05 A/R T4 Twin scroll (external WG)- Part # 179393

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 - 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

1.05 A/R T4 Twin Scroll (external WG)

Optional 2000 Degree Coating

Additional Photos

0.83 A/R T3 Single Scroll (Internal WG)

Optional 2000 Degree Coating

0.92 A/R T4 Twin Scroll (Internal WG)

Optional 2000 Degree Coating