Description
BorgWarner EFR 8374 Turbo
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
Additional Photos: