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Hello, we currently have no plans for the Mk4 ST platform and are unaware if this gearbox is compatible.

@@RTQuaifeEngineering Ok, sad. But thanks a lot for answering.

Good to hear! What else have you done to your M140?

@RTQuaifeEngineering Remap, Sports cat, spacers, subframe inserts. Just needs some decent suspension now!

Hello, the "load Generator" in the Wavetrac is "designed to counter low/no traction conditions", however we have seen little evidence of the Wavetrac working effectively in these zero grip situations (plenty of videos on RUclips). Also the likelihood of the user ever experiencing zero grip is very slim. The ATB will work effectively in rain, snow and ice as long as the level of grip is the same on both wheels. In our experience, you either need an ATB or a Plate Diff if you are typically experiencing zero grip situations. Also, it is worth remembering that by adding friction (Wavetracs Carbon Plates), you are adding wear which cannot be avoided and they will need to be maintained more than the ATB. Furthermore our ATBs are considerably cheaper. For example their 02Q 4WD diff is £1,260.00 excl VAT and ours is £786.50 excl VAT. Is their diff really over 50% better than ours?

The Wavetrac units are very nicely made and look strong. I have one. But be under no illusion about their claims, it does spin one wheel on tighter corners. Much the same as any torque biasing diff will do if it loses load against the wheel.

Hello, there is no set NM needed to turn the axles, however you will struggle to turn it by hand. You will need to have a axle/driveshaft and wheel installed to get the leverage to turn it.

@@RTQuaifeEngineering yes. We made tool from caps and we can turn very easy 8Nm. We know from oem helical differential that must be around 40/45NM.

The ATB isn't designed to lose grip, however you will be able to perform some slides as long as you are not constantly drifting/doing doughnuts.

@@RTQuaifeEngineering good to know thanks! Would be awesome if that sentence was added to the product description tbh. Almost bought it with drifting in mind.

We potentially already have a product to suit, we list one for the Fiat 500/Ford KA which I believe use the same chassis as the Panda 169. Our part number is QDH3K.

Everyone says a wavetrac is better though?

It is something potentially on our development list, please keep an eye on our socials for any updates!

@@RTQuaifeEngineering, I know, it’s a HUGE ask, but the market demands it.💯 Right now, a Tremec Magnum T56 is the only aftermarket transmission with the clout to be trusted with 600+bhp/700+ft.lbs projects. Especially from classic car guys, like me.😁 I’m going sequential shifter to spare my engine a missed shift. The T56 will set me back 3.5-4K$(USD). The right aftermarket sequential shifter will rake me for ANOTHER 3k. If you guys could get around/under those sums, with comparable strength/reliability, you could blow the restomod game wide open.😶 Quaife is becoming one of those “trusted names” blue-collar car guys like me have come to respect. Especially in The States.💯 Even people who have regular T56s will likely upgrade. All-and-all, I’d pay around 8k$ for something like this.💯 However, if it were…say…A SEVEN SPEED…that really doesn’t exist ANYWHERE!😳 I’d consider up to 10k$(USD).🤷🏾‍♂️

Hello, we do not provide anything that will stop the user from moneyshifting. However I can imagine a proper flatshift system with ECU could be programmed.

Hello, please email our sales team on sales@quaife.co.uk!

Hello, yes. They are exclusively available from Mudster Romania, please see their website here: mudster.ro/en/

Hello, please email sales@quaife.co.uk

I would recommend speaking to Momentum Motorsport as they are our EVO specialist (and all of our Evo products are exclusive to them). The best email would be andrew@momentummotorsport.co.uk

@@RTQuaifeEngineering thanks!

Hello, our ATBs have more internal gears than a typical Torsen diff so will be more effective at biasing the torque meaning better grip.

@@RTQuaifeEngineering so you offer a front and rear diff or is this 1 diff interchangeable, front and rear, for my '08 WRX STI 6M driveline?

@@vannevels6758 Please could you kindly email sales@quaife.co.uk so we can send over the relevant documentation? Thank you!

You would notice the ATB more in the front due to the Haldex system prioritising the front wheels.

@@RTQuaifeEngineering the t3 is a rear we drive with a viscous coupling i can engage or disocnent.. I already have a diff lock in the back, was thinking to swap it to the font and put an ATB in the back - or - leave the difflock in the back and add the ATB to the front.. till nott sure

@@MsHappyeman Apologies, in the T3's case, as the drive is predominantly rear wheel drive, the ATB would be best suited for the rear.

Yeah, okay. I can move my diff locker to the front. Are you guys planning an ATB for the VW T3? Peloquin and GT make them. GT ones are very expensive (over 2000€) and Peloquin ones are nearly impossible to get. The market for VW T3 is really taking off and parts are needed. People who don't have the Syncro version also really like them in 2WDs to make them better all-round vehicles. Cheers from germany

@@MsHappyeman We are currently working with Charlie's Werkstatt GmbH in Germany for a batch of ATBs to suit the VW T3s! It would be worth speaking with them to get added to the list!

Hello, I am not sure what you mean, hopefully this clip helps you: ruclips.net/video/UQV8tXf6EkU/видео.htmlsi=nCIH0bTBUiSLVD5I&t=213

Hello, please could you email sales@quaife.co.uk so we can look into this for you? Thank you!

The Quaife ATB was bought to market decades before the Wavetrac, we cannot comment on the which is better as we have no experience with Wavetrac. We have seen little evidence of the Wavetrac working effectively in these zero grip situations (plenty of videos on RUclips). In our experience, you either need an ATB or a Plate Diff. Also, it is worth remembering that by adding friction (Wavetracs Carbon Plates), you are adding wear which cannot be avoided and they will need to be maintained more than the ATB.

Which of these diffs bias more torque? Doesn't that make a difference? Chat gpt seems to think a quaife biases 1.5 to 2.5/1 while a wavetrac does 2.5/3 to 1

@@johnstape4488 no i think when you order Wavetrac or Quaife you can ask them the biases you want that meets your car specs or anything else

Hello, they are designed as motorsport products so they can be used for track cars that travel to the circuit, however for use in a daily vehicle, we would not recommend.

Hello, all our customers are running 500+ with no issues. One customer is currently building their Focus RS to handle 700HP but the gearbox should be fine as it shares the same gear layout as our Honda K Series sequential where we have customers running 1500HP with no issues.

Hello, we have the Mountune M400 map on the car. With standard wheel size and 6000RPM and 3.938 final drive ratio, you would achieve 150MPH. With the 3.471 final drive ratio you would achieve 171MPH.

Hello, what gearbox does your vehicle have? If it is the 7 Speed DCT gearbox then we manufactured a batch of differentials for Cherry Tuning, their website is: cherrytuning.com.au/

Hello, yes we used an aftermarket clutch so you will have no issues with the Xtreme clutch.

Hello, If the ATB is in a FWD application, then preload is typically only used for the diff bearings etc, if it isn't set up properly then you will experience increased diff bearing wear/potential noise. If the ATB is installed into a RWD unit, then you will have pinion bearing preload as well which again, if not setup correctly will have increased bearing wear and will sound horrible. If you are talking about backlash, then you will hear a constant whining noise if the backlash isn't setup up correctly. The ATB (and any Torsen type differential) are torque multipliers, so if there is a wheel with zero grip (i.e. in the air) then that wheel will just spin.

I can only speak to the EATON Detrioit Truetrack, which to my eye is a near clone of the Quaife's layout. If there is one wheel suspended, say, over uneven terrain, and that wheel is spinning under throttle, then we back off the throttle a bit and then add brake. When the spinning wheel is braked, the helical-gear torque path as described so well in THIS video! by our presenter, the drive torque is biased to the wheel that has traction. But wait! there's more: When this type of diff is installed in a vehicle w/ the form of traction control that will add brake to the spinning wheel (via software that uses the vehicle's ABS hardware), seamlessly engaging the helical gear type limited slip unit's operation. These kinds of diffs in modern rigs seem to have been made for each other, although the helical gear design is decades along. Cheers.

Interested in hearing a reply to this.

No it doesn't, but the likelihood of the user ever experiencing zero grip is very slim. The ATB will work effectively in rain, snow and ice as long as the level of grip is the same on both wheels. We have seen little evidence of the Wavetrac working effectively in these zero grip situations (plenty of videos on RUclips). In our experience, you either need an ATB or a Plate Diff. Also, it is worth remembering that by adding friction (Wavetracs Carbon Plates), you are adding wear which cannot be avoided and they will need to be maintained more than the ATB.

@@RTQuaifeEngineering Our experience is that the Wavetrac's will spin the inner wheel also, the situation just needs to be a bit more extreme (As in a bit more difference en tire resistance between left and right) Also wavetrac is quite a bit more expensive and it is a very specific setup that would justify that price difference.

We do not rate any of our replacement gearkits for power or torque, as they all retain the use of the standard sized gearbox cases and therefore shaft centre dimensions. Our gears will be stronger than the original parts, but this simply means that they can transmit more power through the original parts, which puts additional stresses and loads on the standard parts. For this reason we always state that our kits will only handle whatever the original gearbox was designed to safely handle.

@RTQuaifeEngineering I understand not sure if this is ok or not because my gear set has been updated although it's in the same stock trans case and stronger clutch to handle 450hp horsepower

The gearboxes do not come with a speedo gear so you will need to convert it to a wheel speed sensor or another solution.

Is there a direct fit kit for AE86? Input shaft, bellhousing and shifter positioning?

Glad to hear you are enjoying it!

Yes this will not be an issue. Due to the design of the ATB it is incredibly strong. The crownwheel and pinion will fail way before the ATB differential.

Thank you.

For a ford English axle on independence coilover.

A spool.

@@RTQuaifeEngineering Quaife ATB LSDs work for fun non serious drifting in snow and wet though, right? Or is a regular LSD better for that?