Semi-Truck Turbo Rebuilds

Diesel engines in semi-trucks feature turbochargers that maximize overall performance by increasing power and efficiency and improving fuel economy.  Because of this, semi-truck turbochargers play an important role in the function of the truck’s diesel engine.  If there is an issue with the turbo in your semi-truck, it is important to address the issue to ensure optimal engine performance and efficiency.

At HD Turbo, we provide remanufactured semi-truck turbo replacements as well as rebuilds and upgrades to maintain the performance, efficiency, and durability of your truck’s engine. We use the best parts available and follow strict quality control standards to ensure superior performance from our semi-truck turbo replacements.  We also offer repairs and calibration for semi-truck turbos.

Different Types of Semi-Truck Turbos

Semi-truck turbos work by capturing the exhaust gases from the engine that drive a turbine wheel which forces air into the combustion chamber.   The air is compressed before it reaches the cylinder which allows more fuel to be burned, increasing the mechanical power of the truck and the efficiency of the combustion process.  This process is repeated within each cylinder to ensure a continuous generation of power.  By maximizing the efficiency of the combustion process, semi-truck turbos also improve fuel economy.

There are several types of turbochargers used in semi-trucks to increase engine power, efficiency, and fuel economy while reducing emissions.  The following are the main semi-truck turbo types:

• Variable geometry turbochargers (VGT): Variable geometry turbochargers have adjustable vanes that change the angle of the turbine and compressor wheels. The vanes between the turbine and inlet expand or contract to control the flow of exhaust gases towards the turbine and match the boost requirements of the engine.  VGTs improve performance at low RPMs and provide higher boost pressures at high RPMs.
• Wastegate turbocharger: Wastegate turbochargers differ from VGT turbos in that they have fixed vanes and feature a wastegate valve in the turbine housing that controls the flow of exhaust gases to the turbine wheel. When the valve opens, it allows some of the gas to leak out and bypass the turbine wheel to reduce speed and help prevent over boosting at high speeds for improved performance and fuel efficiency.  Wastegate turbos can also include a pneumatic or electric actuator to operate the wastegate valve.
• Twin turbos: Twin turbos consist of two turbochargers that work together to compress the air and fuel mixture that enter the combustion chamber. This process quickly forces more air and fuel into the combustion chamber which allows the engine to power up faster, reducing lag and improving fuel efficiency.

Semi-Truck Turbo Signs of Failure

Semi-truck turbos increase the power and efficiency of diesel engines while improving fuel economy.  If there is a problem with the turbocharger, the truck will lose power, and the engine will operate less efficiently.  It is important to recognize these signs of a failing semi-truck turbo so you can address the issue:

• Power loss: A failing turbo will not provide enough power to the engine, resulting in a noticeable loss of power and difficulty maintaining high speeds.
• Exhaust smoke: If there is bluish-green smoke coming from the exhaust, this could mean oil is leaking from a cracked turbo housing or damaged seals.
• Oil consumption: There could be a problem with the turbo if the engine is burning through more oil than normal.
• Noises: Whistling, grinding, and whining noise may indicate a problem with the turbo.
• Check engine light: The failure of the turbo to reach the required pressure can cause the check engine light to come on.
• Loss of fuel efficiency: The engine will become less fuel efficient if the turbo does not function properly.
• Increase in engine temperature: Turbochargers use colling systems to prevent overheating. If the engine temperature is higher than normal, there could be a problem with the turbo.

Semi-Truck Turbo Replacement by HD Turbo

HD Turbo offers a wide range of semi-truck turbo replacements for many different makes and models of trucks.  You can work with us to get an aftermarket diesel turbo for your truck or rebuild or repair your turbo to ensure maximum performance.  We can also provide semi-truck turbo upgrades to improve the power and efficiency provided by your turbocharger.  We always adhere to strict quality control measures when it comes to our parts, processes, and testing so you can expect high quality turbos for your truck.

For more information about our available remanufactured semi-truck turbos or turbo repairs and upgrades, call HD Turbo at (847) 258-3785.