BorgWarner EFR 6758 Turbo

The EFR 6758 is a remarkably versatile turbocharger, packaged in the compact B1 EFR frame. The compressor offers broad map width for outstanding power potential in a variety of applications from rally, drift, road racing, autocross, drag and street driven applications. This FMW compressor wheel measures 53.9mm inducer with 67mm OD compressor to support a 53lb/min max flow rate. The EFR 58mm turbine wheel is made of Gamma-Ti for low inertia and an optimal match for the FMW compressor wheel. Ideal for use in single turbo applications for the 300-450hp range, or as twin turbo applications 550-900+hp. Ceramic Ball Bearing only, watercooling recommended.  Extremely popular for stock location subaru and many other quick spooling 4 cylinder applications, EFR6758 was also used as twins for the Chevy Indycar team from 2010-2013

Compressor Specifications

• Compressor Type: Forged-Milled Wheel (FMW) Extended Tip
• Compressor Wheel OD (exducer): 67mm
• Compressor Wheel Inducer: 53.9mm
• Max Flow Rate: 53 lb/min
• Built-in BOV: All EFR compressor housings incorporate an integrated BOV.
• Compressor Housing: 2.5" inlet, 2.0" hose coupler outlet

Turbine Specifications

• Turbine Wheel Diameter: 63mm
• Turbine type: Mixed Flow Aerodynamics
• Turbine Wheel Material: Low Inertia Gamma-Ti Turbine Wheel
• Stainless Steel Cast Housing
• 0.85 A/R Vband or T25 -OR- T4 twinscroll 0.80 A/R
• Turbine outlet: GT-Vband (aka small 3" vband) ~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 provision
• Optional Turbo Speed Sensor Kit
• Optional Turbo Speed Gauge

67/58 T25 0.64 A/R Photos:

67/58 T4 0.80 A/R Photos: