Quaife offers a comprehensive Technical Support program, based on decades of accumulated experience with high performance drivetrain components operating in a motorsport environment. Customers can rely on our telephone and email contact channels that provide personal support for queries concerning our range of transmission components, their operation, optimisation and maintenance. As part of this process, Quaife provides technical drawings and parts lists for its key products that are available to download from this website, plus we have collated some of the more popular queries into an FAQ section below.
By negotiation, Quaife can offer installation support to enable the rapid fitment of products into existing or new vehicle applications. In addition, Quaife's technicians provide a comprehensive rebuild service for all our product range to ensure that your Quaife component is performing at peak condition season after season. Please email firstname.lastname@example.org for an individual quotation.
What sort of gear oil should I use?
When running a Quaife ATB helical gear limited slip differential in a standard transaxle gearbox, we recommend that you use whatever your vehicle’s manufacturer recommends. The Quaife ATB Differential does not require any special lubricants. When running Quaife gearbox internals and a Quaife ATB differential, we recommend FuchsTitan SYN5 75W90. For a Quaife ATB differential, running in a rear axle, we advise you use a hypoid 90 or 75W90, as above.
For those applications that will accept a GL5 or SAE75W90 gear oil, we recommend and sell Silkolene SYN5 75W90 gear oil. We use Silkolene in all our own Quaife racing transmissions
What is the torque bias ratio of the Quaife ATB differential?
Quaife does not specify bias ratio details and generally, does not use the term. The Quaife ATB differential is an all helical gear design. The angle and tooth form of the helix used, the number of pinions used and many other factors (including the individual vehicle application in question) all contribute to how the differential behaves and biases drive torque across an axle. Each Quaife ATB differential application is designed to offer the best compromise between performance and durability, which is why it is regarded as the industry benchmark design.
What kind of horsepower can the Quaife ATB differential handle?
The Quaife differential is engineered to handle considerable amounts of power and high torque loadings. In almost any given transmission or rear axle, the Quaife ATB Differential will not be the limiting factor, this has been proven in front wheel drive drag racing where violent standing starts combine with high power outputs and sticky drag rubber. If you have any questions regarding this, please feel free to contact us.
What sort of maintenance is required when using a Quaife ATB differential?
There is no additional maintenance required when using the Quaife ATB differential. It is a ‘fit and forget’ item without any internal plates, springs or washers to wear out.
Are there any special parts needed to install a Quaife ATB differential?
There are no special parts required to install a Quaife ATB differential, beyond what may normally be needed to install a stock unit. The basic parts needed will be: differential bearings, transmission or rear end gaskets and possibly some shims if required.
I don’t see a Quaife ATB differential application listed for my vehicle, what can I do?
Whether you are looking for an ATB Differential, close ratio gearkit, quick steering rack, or all of the above, we specialise in making limited productions on a custom basis. With many differential production runs of only 30 units, and gearkit productions of as few as 10 kits, Quaife can provide small companies and race teams with custom made driveline products built to their own, unique requirements.
If you are an individual looking for one part, please feel free to contact us to discuss your needs, because you may not be the only one looking. Many new applications have begun with a single phone call. After that, it would be a good idea to seek out fellow enthusiast owners that share an interest in your same vehicle. You may be able to gather enough people together to enable enough of a business case to commence production of a new ATB fitment. Please feel free to contact us – you have nothing to lose . . . and only performance to gain.
Can Quaife produce a custom differential for my vehicle?
Quaife is always receptive to the idea of producing special batch runs of differentials, gear kits and many other driveline components, and we specialise in the economical production of small volume runs. Although a single, custom Quaife ATB differential could be made, it is often cost-prohibitive. A typical, small batch run of differentials is 30-50 units, and a batch run of gear kits is between 10 and 25 sets.
What do I do if I think I have a problem with my Quaife differential?
Initially we would recommend you telephone or e-mail the Quaife Technical Sales team before returning any product. One of our trained technicians will gladly help you remotely diagnose the issue. If at that point it is deemed necessary, you will be asked to dispatch the differential to Quaife, minus the interfacing parts and differential bearings. You will require an authorisation from Quaife before returning any items for inspection, service, or repair. Our technicians will evaluate your Quaife ATB differential and advise you of our findings.
What do I do if my Quaife gearkit or gearbox needs service or repair?
If you suspect a problem with your Quaife gearkit or gearbox, you would be advised to follow the same procedure as above. Contact the Technical Sales team via telephone or send us an e-mail to let us know what is going on before you return the unit to us. Our technicians will determine the cause of the problem as quickly as possible, repair it, and get you back on the track.