What is the difference between a VGT turbo and a non VGT turbo? A VGT turbo uses the vanes for a more controlled exhaust flow. On the other hand, the boost pressure completely depends on the exhaust flow which may be controlled by a wastegate or exhaust bypass.
Well, a turbocharger provides your engine with the necessary air pressure to create more power and torque. The job of the turbocharger is to pull the air in and supply extra air pressure to the engine. This extra air pressure helps the engine to boost up.
While there are different kinds of turbochargers, the main debate is always about VGT vs non VGT turbo.
VGT Vs Non VGT Turbo Differences
|Vanes||Boost pressure control||Wastegate|
|Est. 49.4mm||Compressor inducer diameter||Est. 60 mm-69 mm|
|Adjustable||A/R||0.96 mm-1.32 mm|
|Comparatively less durable||Durability||Almost 150000 miles|
VGT Or Non VGT Turbo- Basic Differences
Variable geometry turbocharger, widely known as VGT is a kind of turbocharger that can control the air-fuel pressure ratio.
VGT has adjustable vanes that control the exhaust flow. The vanes change remains folded or open depending on the low engine speed and the high engine speed, which allows the turbocharger to maximize or minimize the flow. It helps to get a perfect air-fuel ratio. Thus, the accurate boost your vehicle needs.
When it comes to VGT vs on VGT turbo Duramax, research shows a better reaction from the Duramax VGT turbo users.
On The other side, a fixed geometry turbocharger, commonly known as non VGT turbo is the most common and most basic turbocharger.
Non VGT turbochargers simply have a turbine that rotates with the exhaust flow. The boost completely depends on the exhaust flow that comes through the housing.
A wastegate or side bypass is often used in the non VGT turbocharger to gain more exhaust pressure control.
The Powerstroke users often suggest non VGT for a better towing experience while debating about VGT vs non VGT turbo 6.7 Powerstroke.
Non VGT Vs VGT Turbo: Boost Pressure Control
The standard non VGT is a simple machine with a turbine. In some non VGT turbo, a wastegate is added to control the boost pressure.
It is a valve placed in the middle of the turbocharger and exhaust intake.
On the other hand, VGT turbo has an electrical solenoid that makes the vanes fold or open depending on the engine speed. It allows the engine more boost even with low airflow.
Non VGT Vs VGT: Compressor Inducer Diameter
The size of the compressor inducer makes a significant difference in the performance. A compressor inducer with large diameter has more airflow capability.
VGT turbo compressor inducer has an average diameter of 49.4 mm.
Non VGT turbo has the upper hand in this case. They generally have an average diameter of 60 mm to 69 mm.
A/R (Area over Radius)
The exhaust airflow that comes from the engine passes through the turbine housing and as a result, the wheel assembly rotates.
More airflow means more horsepower. This is where the A/R is important. Larger A/R provides more horsepower.
VGT turbo is the winner of VGT VS non VGT Turbo 6.7 Cummins if you consider the A/R. VGT has adjustable vanes that can change the diameter according to the situation. This gives your vehicle a wonderful and accurate power level.
Non VGT turbo can have the A/R of 0.96 mm to 1.32 mm.
Non VGT turbo is more reliable and durable as it doesn’t have many components with the chance of damage. A non VGT turbo can last almost 150000 or more miles when properly maintained.
In the case of VGT turbo, it has a lot of tiny components inside it that always bears the chance to be worn out. Also, the soot build-up inside a VGT turbo can cause damage and a low-performance level.
The price of the turbocharger mostly depends on the quality, performance, and vehicle model. The price will vary according to the type of turbo it needs.
For obvious reasons, VGT turbo is more expensive than the non VGT turbo.
You can find a wide range of variety starting from $500 that can reach up to $5000.
A Helpful Tutorial You May Need!
Frequently Asked Questions (FAQs)
Are non VGT turbos better?
Non VGT turbochargers simply have a turbine that rotates with the exhaust flow. The boost completely depends on the exhaust flow that comes through the housing. When the question is about VGT and non VGT turbo durability, non VGT turbo is more reliable and durable.
What does a VGT turbo do?
VGT is a kind of turbocharger that can control the air-fuel pressure ratio. VGT turbo has an electrical solenoid that makes the vanes fold or open depending on the engine speed. It allows the engine more boosts even with low airflow.
What is a VGT on a turbo?
The small turbine between the engine and exhaust is called the turbocharger. The turbine rotates using the exhaust pressure and provides more air to the engine for more power production. Variable geometry turbocharger, widely known as VGT is a kind of turbocharger that can control the air-fuel pressure ratio.
Turbocharger boosts your engine with extra power and extra energy. The exhaust air pressure in your engine provided by the turbocharger produces more horsepower for your vehicle.
VGT vs non VGT turbo, whichever it may be, should be in sync with your vehicle type and model.
Choose the one that suits your vehicle, and you prefer most!
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Ah! Driving your King has no twist when you have zero knowledge! Yes, Noah is here with his core experiences about trucks, cars, suvs and atvs. Working as a cheif editor for Automasterx to make you satisfied with solid data driven post.