The Advantages of Genuine Garrett® Turbos
Only genuine turbos can guarantee performance, quality and reliability. Choosing a copy turbo over a genuine original equipment (OE) turbo can lead to some serious problems:
- Reduced performance
- Increased fuel consumption
- Increased emissions
We have looked at some of the key differences between OE and copy turbos in relation to nozzle assemblies, bearing systems and actuators to demonstrate the disadvantages of choosing a copy turbos.
1. Nozzle Assemblies
As these two images show, the nozzle assemblies in a copy turbo falls below the Garrett Honeywell Standard.
The copy turbo uses obsolete 1st generation Honeywell VNT technology. It also has a blade specification of 9 vane or 9 wheel which will give the wrong vane to blade ratio. In addition, the vane arms and unison ring design is obsolete.
In the OE quality turbo from Garrett, the nozzle assembly features 2nd generation VNT technology with OEM quality components. It features 11 vanes and 9 turbine wheel blades as opposed to the 9 vanes on the copy turbo. The turbo also has 2nd generation low inertia vane arms with a unison ring.
2. Bearing Systems
Bearing Systems are another part of a turbo where you can clearly see a difference between copy and OE quality models:
The bearing system on the left is unsuitable for application, and is actually a copy of an obsolete Honeywell design. The machining, finishing and surface finish is well below Garrett Honeywell standards too. Furthermore, in the bottom image, the thrust bearing is heavily contaminated. In comparison, the genuine Garrett turbo has been designed for low friction, low viscosity oil which are found in latest generation vehicles. They have used a new surface finishing technique too, which helps to improve wear resistance. The thrust bearing on the OE turbo also has an oil pocket with a high thrust capacity.
The quality of an actuator can also be compromised in a copy turbo.
In the image of the copy turbo on the left, the actuator has the wrong springs and internal parts. You can also visibly see rust inside this ‘supposedly new’ copy turbo, making the service life of the turbo unpredictable. The anti-corrosive plating is also putting the turbo at risk of premature failure as it falls below Garrett Honeywell standards. In contrast, the genuine OE turbo has new parts, which adhere to OEM specifications, this leads to improved durability and performance. The anti-corrosive plating here has been tested to ensure long service life, including salt bath testing.
In conclusion, although it isn’t always easy to detect the differences, it is always best to buy genuine OE turbos as they guarantee the highest standards in quality. For more information on these products or for any purchasing enquiries, contact your local FPS representative.