Set of 2 Comp Turbo CTR4002H-6875 - 1,150hp each
Set of 2 Comp Turbo CTR4002H-6875 - 1,150hp eachSet of 2 Comp Turbo CTR4002H-6875 - 1,150hp eachSet of 2 Comp Turbo CTR4002H-6875 - 1,150hp eachSet of 2 Comp Turbo CTR4002H-6875 - 1,150hp eachSet of 2 Comp Turbo CTR4002H-6875 - 1,150hp eachSet of 2 Comp Turbo CTR4002H-6875 - 1,150hp eachSet of 2 Comp Turbo CTR4002H-6875 - 1,150hp eachSet of 2 Comp Turbo CTR4002H-6875 - 1,150hp each
***Use Discount Code: " Oil-Less " at checkout for a $300 discount when bundling this item with our Twin Turbo Kit***
Individual Turbo Info:
Horsepower - 1,150
Displacement - 1.5L - 6.0L
  • Inducer - 68mm
  • Exducer - 102mm
  • OD - 82mm
  • Exducer - 75mm
Compressor Housing:
  • Inlet - 4"
  • Outlet - 3"
  • A/R .85
  • Boost - 1/8-27 NPT
    Turbine Housing Options:    
    • (4093812) .81 A/R T4 Inlet Single Entry 3 5/8 V-Band
    • (4093962) .96 A/R T4 Inlet Single Entry 3 5/8 V-Band
    • (4093103) 1.00 A/R T4 Inlet Twin Scroll 3 5/8 V-Band
    • (4093113) 1.15 A/R T4 Inlet Twin Scroll 3 5/8 V-Band
    OIL-LESS 3.0 Features: 
    • Titanium Bullet Nose
    • 99% Mechanical Efficiency
    • Fully Rebuildable/Upgradeable
    • Anti-Surge Compressor Housing
    • Billet Aluminum Bearing Housing
    • Can Be Mounted In Any Orientation
    • Inconel 713C 10 Bladed Turbine Wheel
    • Patented TRIPLEX CERAMIC™ Ball Bearing Oil-Less System
    • NEW 7/14 Vane Billet Slim Hub Extended Tip Compressor Wheel
    OIL-LESS Bearing Housing:
    • Water Port Threads 3/8 18 NPT
      Compressor Wheel Technology:
      • Comp turbo compressor wheels are 5-axis machined from an aluminum billet that has significantly higher mechanical properties than cast wheels and are thus capable of higher speed and pressure ratios. Aerodynamically, they represent the latest in compressor design technology that includes backward leaning, alternately cut back vanes.
      • The inducer diameters are maximized so that high air mass flow is obtained from small diameter wheels.
      • Vaneless diffusers and volute compressor casings are used, resulting in a compact design with broad range and high efficiency.
      OIL-LESS 3.0 Technology
      • Comp Turbo Technology, Inc. extended the boundaries of turbocharger technology with the announcement of the availability of a turbocharger model that used a bearing system that did not need a lubricating oil supply from the engine.  The oil-less model has been in production now for over six years and has established an enviable record for extended durability in the field.  Lube oil supply and drain lines are unnecessary, and the oil-less turbochargers can be mounted in a variety of positions and locations that were not possible when lube oil had to be gravity-drained back into the engine crank case.
      • Historically, the use of engine oil to lubricate turbocharger bearing systems has given rise to a number of serious operational problems.  To prevent oil leakage into the compressor and turbine casings, small piston rings are employed as oil seals in commercial turbochargers.  Since the piston rings are not positive contact seals, here is a small leak path around the rings.  During certain operating conditions of the engine, such as low idle or when a vacuum occurs in the air intake system due to a restricted air cleaner, some oil leakage around the piston rings can occur.  Any lube oil leakage into the turbocharger casings can result in undesirable emissions and/or smoke in the engine exhaust.​
      • In cold weather or cold climates, due to the high viscosity of cold lube oil when the engine is started, there can be a significant time lag before lube oil reaches the turbocharger bearings.  In some cases, this time lag can cause sleeve bearings to fail due to oil starvation.
      • Another problem can occur when a hot engine is shut down quickly from being operated at high speed and load where exhaust temperatures are maximized.  Heat that is conducted into the turbocharger casings from the hot exhaust manifold can cause residual lube oil in the turbocharger bearing housing to carbonize.  After repeated hot engine shut-downs, this carbonization can accumulate in the bearing housing and eventually cause failure of the bearings.
      • Notwithstanding the fact that years of development and operational experience has mitigated the above described problems, there remained a motivation to remove the use of engine oil from turbocharger bearing systems, thereby eliminating completely the problems associated with the use of oil.  Comp Turbo Technology, Inc. responded to this challenge by developing the first commercial oil-less turbocharger.  The oil-less models employ a version of the TRIPLEX CERAMIC™ ball bearing system where the full complement bearings are lubricated by a high-quality channeling grease.  The internal components are made of stainless steel to prevent rusting over the lifetime of the turbocharger.
      • The elongated steel cylinder that mounts the bearings is provided with axially spaced "O" rings in its outside diameter that engage the bore in the bearing housing and the steel cylinder does not rotate.  Cooling water is supplied from the engine to an enlarged circumferential water jacket in the turbocharger bearing housing.  This cools the bearing housing, taking away the heat conducted to it from the hot turbine casing.  A Zerk fitting has been added to the bearing housing to allow re-greasing the bearings on site without disassembling the turbocharger, thereby extending their life indefinitely.
      Turbine Wheel Technology:
      • Comp Turbo turbine wheels are designed where high exhaust flow capability is required and have a minimal leaving gas velocity that increases turbine efficiency. This light-weight, high efficiency, slim hub, 10-vane turbine wheel has lower inertia leading to faster rotor acceleration
      Turbine Housing Technology:
      • The turbine casings are available in both the undivided and divided type that is used with divided exhaust manifolds.  Divided manifolds that separate the engine exhaust pulsations produce the best engine acceleration and the best low engine speed performance.  Built-in waste gates in the turbine casing are available where vehicle applications dictate maximizing low engine speed boost pressure and prevent over-speeding the turbocharger over the high engine speed range.
      Outside of continental USA and International Shipping must contact us prior to ordering. Sales