Better Than Traction Control - Introducing The Quaife ATB Differential!

A 'Tom Tech Talk' - an insight and overview to the Quaife ATB Differential that we had commissioned over a decade ago to improve the traction of the V8 range of cars.
Traditionally Jaguars had limited slip differentials (LSDs) installed to assist with traction, but with the introduction of the V8 engine cars, Jaguar moved over a a traction control system and they dropped the original plate and clutch LSD.
Whilst there is some benefit to a traction control system, the lack of LSD meant the handling wasn't as good as it could be and the high performance supercharged 'R' versions of the XK8, XJ8 and S Type, simply didn't handle as well as some of their German rivals at the time.
Tom approached Quaife and helped develop their unique Automatic Torque Biasing differential to be suitable for a number of Jaguars, following high customer demand.
Since then, we have fitted a number of Quaife ATB diffs to a large number of X100 XK8/Rs, X300 XJ8s & XJRs, S Type Rs, X350 XJRs, and up to and including X150 XKs & XKRs (the 4.2 V8).
We hope you enjoy this quick video - please note, we will be using microphones in future videos to help with the sound quality.
Contact us below for more information - [e-mail]
Website - www.tomlenthal...
Facebook - / tomlenthallltd
Instagram - / tomlenthall.ltd

[@krifferb1980]

best thing about a limited slip is being able to send power to the wheel with grip. enjoying your content so far keep up the good work

[@tomlenthallsworkshop]

Thanks 🙏👍

[@trainman665]

That’s the whole point! 😂

[@don.timeless4993]

Quaife & Wavetrac LSDs need to be in every car!

[@davidclarke7728]

Very informative

[@tomlenthallsworkshop]

Thanks David - pleased to hear you found it interesting.

[@Daniel-S1]

2:22 - I don't believe that's correct. Surely what a clutch pack limited slip diff does is divert more power to the wheel with the most grip and usually there is a 30/70 or 70/30 split. In the wet you won't get tyre marks but the rear of the car will fish tail from side to side as the diff hunts for grip, while the car goes forward in a straight line. What you described the conventional clutch pack limited slip diff does, is in fact what the Quaife does. The Quaife locks the diff action so both wheels spin at the same speed and the split is 50/50. While this means the wheel with grip 'only' gets 50% of the grip, rather than 70%. However, this means there is less load on the half shafts. On a standing start with a Quaife you will get two lines but that equal power split means the back end (on a rear wheel drive car) will step out to the right a bit. If you have any doubts about the accuracy of what I have said then ask Quaife to confirm/contradict or clarify.

[@01AnthraciteXJR]

Great stuff I have an 01 XJR I would definitely be interested in one of these units!

[@tomlenthallsworkshop]

👍 - lovely car, we love the X308 XJRs - Drop us an email at [e-mail] and we can discuss further.

[@arvidkarlberg5845]

biggest problem with my e320 s124 is the open diff! quaife will be my next upgrade.. love the quaife in my 996 c4

[@od6020]

Do you find any gear lash with the quaife lsd. I’ve had one fitted and I’m getting a clunk noise when on and off throttle ( load)

[@jamesreid1847]

So having Torsen Bias diff eliminates the Traction Control and ABS systems??

[@jeffharrison5265]

If I understand you correctly this won't work in a 72 XJ12? Great info. Thanks.

[@tomlenthallsworkshop]

Hi Jeff - this particular unit won’t fit in your XJ12, but you should already have a plate and clutch LSD in your car as standard. However, we are able to source an alternative Quaife unit suitable should you wish. We have put them in E Types before. If you want more info, send us an email - [e-mail] 👍

[@jeffharrison5265]

@@tomlenthallsworkshop thanks. My xJ12 used to be a XJ6, so good to know an alternative to the Power Lock is available. 👍

[@Vivoz389]

How much will it roughly cost to have a LSD supplier and fitted for a xjr x350

[@tomlenthallsworkshop]

Hi - it would be in the region of £2400 inc VAT. Let us know if you need any further information or details.

[@bongskag]

just weld it up

[@vince6987]

Can this fit the 2009 4.2 v8 XF

[@tomlenthallsworkshop]

Yes it will! 👍

[@iJangoMan1]

open diffs are literal hot garbage

[@makantahi3731]

sadly, not for my car

[@tomlenthallsworkshop]

Hi Makan - what car do have? We are able to source quaife units for other Jaguars.

[@makantahi3731]

@@tomlenthallsworkshop chrysler 300c awd and that is problem, if i have rwd they make for it but my have wrong differential ratios on rear axle and for front they do not make at all, thank you