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Billet Turbocharger Compressor Wheel GM 6.6 Duramax Lmm 2007-2010 759335-0002
Feb 28, 2018

Billet Turbocharger Compressor Wheel GM 6.6 Duramax Lmm 2007-2010 759335-0002 Basic Info

  • Model NO.: BOSJ-T

  • Body Material: Aluminium

  • Electric Turbocharger Type: Axialflow

  • ETS Type: Axialflow

  • Brand: Garrett

  • Trademark: BOSJ

  • Origin: Jiangsu

  • Type: Compound Turbo System

  • Certification: ISO9001, CE, E-Mark, RoHS

  • ETS Component: Turbine

  • Application: WuLing

  • Making Machine: 5 Axis

  • Specification: BOSJ-T

Product Description

Turbine Compressor Wheel

Energy provided for the turbine work is converted from the enthalpy and kinetic energy of the gas. The turbine housings direct the gas flow through the turbine as it spins at up to 250,000 rpm. The 
size and shape can dictate some performance characteristics of the overall turbocharger. Often the same basic turbocharger assembly is available from the manufacturer with multiple housing choices 
for the turbine, and sometimes the compressor cover as well. This lets the balance between performance, response, and efficiency be tailored to the application.
The turbine and impeller wheel sizes also dictate the amount of air or exhaust that can be flowed through the system, and the relative efficiency at which they operate. In general, the larger the 

turbine wheel and compressor wheel the larger the flow capacity. Measurements and shapes can vary, as well as curvature and number of blades on the wheels.
Compressor Wheel Parameter

ApplicationReplace wheel number: ???
Fit CHRA : 700177-0001
Fit Turbo # : 714569-0001, 714569-0002, 714569-0003
Product SituationBrand New
Maximum boost 5 bar / 70 Psi
BalanceBalanced By SCHENCK Germany
Ready to competition
Wheel SizeInducer Dia.: 54.97 / 76.13 mm (Trim 52)
Exducer Dia. : 76.13 mm
Extend Tapered Tip Exducer dia : 82.54 mm
Tip Height: 6.55 mm
Super Back Height: 2.36 mm
Bore: 5.99 mm
Blade : 6+6
MaterialForged Aluminum
 NoteWe can customize billet compressor wheel, Please contact us if you need it.
We can combine shipping for all items and will send invoice when we receive all of your order.

On the left, the brass oil drain connection. On the right are the braided oil supply line and water coolant line connections.
Compressor impeller side with the cover removed.
Turbine side housing removed.
A turbocharger's performance is closely tied to its size. Large turbochargers take more heat and pressure to spin the turbine, creating lag at low speed. Small turbochargers spin quickly, but may 
not have the same performance at high acceleration. To efficiently combine the benefits of large and small wheels, advanced schemes are used such as twin-turbochargers, twin-scroll turbochargers, 
or variable-geometry turbochargers.

 Pre-treatment Machine

Two-stage variable twin-turbos employ a small turbocharger at low speeds and a large one at higher speeds. They are connected in a series so that boost pressure from one turbocharger is multiplied 
by another, hence the name "2-stage." The distribution of exhaust gas is continuously variable, so the transition from using the small turbocharger to the large one can be done incrementally. Twin 
turbochargers are primarily used in Diesel engines. For example, in Opel bi-turbo Diesel, only the smaller turbocharger works at low speed, providing high torque at 1,500-1,700 rpm. Both 
turbochargers operate together in mid range, with the larger one pre-compressing the air, which the smaller one further compresses. A bypass valve regulates the exhaust flow to each turbocharger. 
At higher speed (2,500 to 3,000 RPM) only the larger turbocharger runs.
Smaller turbochargers have less turbo lag than larger ones, so often two small turbochargers are used instead of one large one. This configuration is popular in engines over 2,500 CCs and in V-
shape or boxer engines.
Twin-scroll or divided turbochargers have two exhaust gas inlets and two nozzles, a smaller sharper angled one for quick response and a larger less angled one for peak performance.
With high-performance camshaft timing, exhaust valves in different cylinders can be open at the same time, overlapping at the end of the power stroke in one cylinder and the end of exhaust stroke 
in another. In twin-scroll designs, the exhaust manifold physically separates the channels for cylinders that can interfere with each other, so that the pulsating exhaust gasses flow through 
separate spirals (scrolls). With common firing order 1-3-4-2, two scrolls of unequal length pair cylinders 1-4 and 3-2. This lets the engine efficiently use exhaust scavenging techniques, which 
decreases exhaust gas temperatures and NOx emissions, improves turbine efficiency, and reduces turbo lag evident at low engine speeds.
Variable-geometry or variable-nozzle turbochargers use moveable vanes to adjust the air-flow to the turbine, imitating a turbocharger of the optimal size throughout the power curve. The vanes are 
placed just in front of the turbine like a set of slightly overlapping walls. Their angle is adjusted by an actuator to block or increase air flow to the turbine. This variability maintains a 
comparable exhaust velocity and back pressure throughout the engine's rev range. The result is that the turbocharger improves fuel efficiency without a noticeable level of turbocharger lag.


Fuel-air mixture ratio
In addition to the use of intercoolers, it is common practice to add extra fuel to the intake air (known as "running an engine rich") for the sole purpose of cooling. The amount of extra fuel varies, but typically reduces the air-fuel ratio to between 11 and 13, instead of the stoichiometric 14.7 (in petrol engines). The extra fuel is not burned (as there is insufficient oxygen to complete the chemical reaction), instead it undergoes a phase change from atomized (liquid) to gas. This phase change absorbs heat, and the added mass of the extra fuel reduces the average thermal energy of the charge and exhaust gas. Even when a catalytic converter is used, the practice of running an engine rich increases exhaust emissions


Billet Turbocharger Compressor Wheel GM 6.6 Duramax Lmm 2007-2010 759335-0002.jpg