BorgWarner Airwerks S471SX3 T4 Turbocharger aka 71mm S400SX3

BorgWarner’s 71mm S400SX3 turbocharger is one of the highest bang-for-the-buck large-frame turbos available. This design pairs a high flowing 83mm S400SX3 turbine wheel with a 100.17mm OD AirWerks “S” generation compressor wheel with Extended Tip Technology for the ultimate in aerodynamics, low RPM spool-up & high RPM horsepower output. This combination provides huge exhaust flow energy without restriction. Bolt-on for many twinscroll T4 manifolds and 4″ downpipes.

Compressor Specifications

• Compressor Wheel Exducer: 100.17mm
• Compressor Wheel Inducer: 71mm
• Max Flow Rate: ~100 lbs/min (Compressor Map Unavailable)
• Max Recommended Turbo Speed: 105079 RPM
• Compressor Housing Connections:
  • Inlet: 5.0″ Hose Coupler
  • Outlet: 3.5″ V-Band

Turbine Specifications

• Turbine Wheel Exducer: 74.29mm
• Turbine Wheel Inducer: 83mm
• Housing Size and A/R ratio: S471SX3 10083 is available in four (4) different turbine housing configurations:
  • 0.90 A/R Divided T4 Twin Scroll Inlet
  • 1.00 A/R Divided T4 Twin Scroll Inlet
  • 1.10 A/R Divided T4 Twin Scroll Inlet
  • 1.25 A/R Divided T4 Twin Scroll Inlet

Turbine Outlet: Half Marmon Flange

BorgWarner’s S400SX3 71mm Turbo Features:

• 5.0″ inlet / 3.5″ outlet compressor housing
• All-new severe duty 360 degree thrust bearing
• Interchangeable with existing turbine housings
• 83mm turbine wheel

This is a journal bearing oil cooled only turbocharger ideally suited to competitive drag racing.

This turbo is an excellent choice for a Drag Race B-series engine. The airflow this turbo generates compliments high flowing VTEC cylinder heads and 83mm turbine wheel nicely. The S400SX turbos will fit Full-Race twinscroll turbo manifolds and 4″ downpipes.