Wavetrac rear LSD installed. :)

[Kievskiy]

Sorry no videos yet.
LSD Part # 40-309-170wk (no matter what the seller says it will fit rear diff 01R!)
Wavetrac warranty requires using Motul Gear 300 75w90 or Motul 75w140 competition.
My diff carrier #01R525053E (2000 A6 2.7T 6MT)
Here are some pictures of broken stock diff and intalation of the lsd:) enjoy.

Broken gear on the right of thestock diff:

new diff in!





stay tuned for some test runs and videos

[Racin2redline]

Awesome!

[Scotty@Advanced]

It's a great upgrade, I've put Wavetrac diffs in the front and rear of Allroads for a couple years now.

[Kievskiy]

i drove it today, and holly shit, my rwd 6 drifts and grips so nice i cant describe it haha, i will be doing lots of videos in near future after i get it out of my system and get used to it :)

[ENDEE666]

It's a great upgrade, I've put Wavetrac diffs in the front and rear of Allroads for a couple years now.

Oh?? More info please. Benefits? What are the effects on driveability & handling?

[JimmyBones]

Sorry no videos yet.
LSD Part # 40-309-170wk (no matter what the seller says it will fit rear diff 01R!)
Wavetrac warranty requires using Motul Gear 300 75w90.
My diff #01R525053E (2000 A6 2.7T 6MT)
Here are some pictures of broken stock diff and intalation of the lsd:) enjoy.

That must be a recent change because my paperwork said to use the factory fill for fluids.

You will really enjoy the LSD, have fun.

[Kievskiy]

maybe, mine says motul 300 75w90 or competition 75w140, it says recomended, in big letters, so i went for it, lots of bmw guys using w/e oil they have. anyways the diff works very smooth, im enjoying it every corner))

That must be a recent change because my paperwork said to use the factory fill for fluids.

You will really enjoy the LSD, have fun.

[ddillenger]

Hey Scotty:

I've heard the D2 S8 LSD differentials (case and all) will bolt into the C5 chassis. Comments? I bought one a while back and while it looked similar I never compared them side by side.

[Scotty@Advanced]

Hey Scotty:

I've heard the D2 S8 LSD differentials (case and all) will bolt into the C5 chassis. Comments? I bought one a while back and while it looked similar I never compared them side by side.

D2,C5,B6 diffs are the same 01R family.

[JimmyBones]

maybe, mine says motul 300 75w90 or competition 75w140, it says recomended, in big letters, so i went for it, lots of bmw guys using w/e oil they have. anyways the diff works very smooth, im enjoying it every corner))

Yeah the BMW guys swear by 75w-140 for LSDs. I got a LSD for my BMW 850i with a better gear ratio and the place that I got it from required 75w-140.

[Kievskiy]

reporting back, first 100 miles mostly city and some highway driving with Motul Gear 300 75w90, no noises at all, very smooth, no grinding, will be changing gear oil at 500 mile mark to check on the condition. Will be def. staying with Motul.

[ENDEE666]

How's this thing holding up now. Did you get the axles sorted out?

Also, Scotty, can you tell me more about when you add the LSD's to front & rear of Allroads? What kind of changes does that result in? Curious how it affects handling as well as launching with a rear LSD (in a Quattro car, not RWD) for my A6..

[ENDEE666]

Also, which diff did you use? Wavetrac's site doesn't show A6 applications.. Is it the B6 A4 rear unit?

[Scotty@Advanced]

Also, which diff did you use? Wavetrac's site doesn't show A6 applications.. Is it the B6 A4 rear unit?

yes the same diff carrier is used in the B5,C5,B6,D2 and early C6 and D3's.

[Scotty@Advanced]

How's this thing holding up now. Did you get the axles sorted out?

Also, Scotty, can you tell me more about when you add the LSD's to front & rear of Allroads? What kind of changes does that result in? Curious how it affects handling as well as launching with a rear LSD (in a Quattro car, not RWD) for my A6..

It doesn't affect handling much on road but off road from what i've experienced, will plow through just about anything. Regarding the rear LSD, are you talking about a true LSD or a torque biasing differential like a wavetrac?

[ENDEE666]

Not sure. Haven't really looked into it much. Would either one yield better handling or better launches? I've seen some things in passing about LSD's on Evo's having good results. Would the Wavetrac (or other, like D2 S8 etc) have positive improvements in those areas?

[Scotty@Advanced]

Not sure. Haven't really looked into it much. Would either one yield better handling or better launches? I've seen some things in passing about LSD's on Evo's having good results. Would the Wavetrac (or other, like D2 S8 etc) have positive improvements in those areas?

D2 S8 has a rear open diff.

The benefits of a torque biasing diff are there is no engagement properties to speak of it seamlessly distributes torque from one side to the other. With an LSD as the clutch packs engage and disengage it is noticeable. LSD's also work if one wheel is near zero torque, whereas a TBD will perform like an open diff.

[ENDEE666]

D2 S8 has a rear open diff.

The benefits of a torque biasing diff are there is no engagement properties to speak of it seamlessly distributes torque from one side to the other. With an LSD as the clutch packs engage and disengage it is noticeable. LSD's also work if one wheel is near zero torque, whereas a TBD will perform like an open diff.

Oh.. It was mentioned above about swapping a D2 S8 rear LSD into A6's.. Did any other Audi's come with a rear LSD that could be swapped to a C5?

[Scotty@Advanced]

Oh.. It was mentioned above about swapping a D2 S8 rear LSD into A6's.. Did any other Audi's come with a rear LSD that could be swapped to a C5?

No Audi came with a Rear LSD. The D11 V8 came with a torsen rear unit (a Torque Biasing Diff) but it has several issues, it won't fit without machining, and it has been known to explode.

[estomax]

so stock, the C5 A6 (all models, even sport?) have a torsen center diff and open front and rear diffs (not even a viscous rear?)? That fooled me, i thought the car did darn well in the snow. When i went from an open diff to a torsen in my 240sx it made a world of difference (though that was rwd to being with).

cheers
Marko

[Scotty@Advanced]

so stock, the C5 A6 (all models, even sport?) have a torsen center diff and open front and rear diffs (not even a viscous rear?)? That fooled me, i thought the car did darn well in the snow. When i went from an open diff to a torsen in my 240sx it made a world of difference (though that was rwd to being with).

cheers
Marko

Correct. this can be said for all cars except for models after 2008, the D11's and the earlier quattros with manual rear diff locks.

[ENDEE666]

D2 S8 has a rear open diff.

The benefits of a torque biasing diff are there is no engagement properties to speak of it seamlessly distributes torque from one side to the other. With an LSD as the clutch packs engage and disengage it is noticeable. LSD's also work if one wheel is near zero torque, whereas a TBD will perform like an open diff.

So would a TBD have launching & handling benefits? Or would it only be in conditions of slipping like snow/rain?

[Scotty@Advanced]

So would a TBD have launching & handling benefits? Or would it only be in conditions of slipping like snow/rain?

If your spinning wheels while launching then yes. As far as handling the same goes for handling changes due to the axle the diff is installed having more traction. Same goes for inclement weather conditions, provided you are not in a zero torque situation.

[Kievskiy]

i ordered the rear axles from AR, they will be here tomorrow, they are a little beefier, i will be reporting back on how they fit, my axles were old and worn out so they didnt hold for long, diff holds very well and drives completely normal until you floor it. I think launching would not change much, but powering out of the turns will almost eliminate understeer and will add oversteer, some audi OGs used stasis lsd in their auto-x cars, being quattro.

How's this thing holding up now. Did you get the axles sorted out?

Also, Scotty, can you tell me more about when you add the LSD's to front & rear of Allroads? What kind of changes does that result in? Curious how it affects handling as well as launching with a rear LSD (in a Quattro car, not RWD) for my A6..

[Kievskiy]

So the allroad axles are direct fit, they are a little bigger, part number is 4Z7 501 203A. Some say rs6 axles will fit also but i am yet to find that out, allroad axle being bigger sits very close to the strut already, with rs6 axles it might be some rubbing involved. Anyways, now i need to do something to the rear subrame bushings:)

[Scotty@Advanced]

Is this the same post on Facebook?

[Kievskiy]

Yeah, and you are the one who gave me the part number for rs6, anyways after installing allroad axles i realized how close they sit to my strut, in my case its 5mm or less, im on h&r coilovers, so all depends on how much bigger are rs6 rear axles are. Olso rs6 parts are hard to come by, where there are tons of allroad parts around the net.

[Scotty@Advanced]

S6, Rs6, and A6 4.2 share the same axles. Might be a bit easier to find.

[ENDEE666]

S6, Rs6, and A6 4.2 share the same axles. Might be a bit easier to find.

Any idea what the differences are among them? Which are bigger/lighter/stronger etc?

[ddillenger]

My 4.2 rear axles are at least 2x as heavy as the 2.7t axles. Even bigger than the allroad.

[ENDEE666]

Wonder if that weight means stronger for sure.. Or if it results in more momentum making other points become weaker..

[ENDEE666]

.....I will be doing lots of videos in near future.....

Ahem.........
We were promised videos.......

[Scotty@Advanced]

Wonder if that weight means stronger for sure.. Or if it results in more momentum making other points become weaker..

The old saying "If your not breaking parts, your not making enough horsepower" is always true.

Stronger axles mean blown up diff down the road!

[Scotty@Advanced]

Any idea what the differences are among them? Which are bigger/lighter/stronger etc?

I've not done a side by side comparo, but I do know the axles are larger, and hollow on the V8 cars. on the V6 cars I'm pretty sure they are solid.

[onemoremile]

For those wondering about adding an LSD to the rear of an AWD car - just do it. I also have an 06 Outback with AWD and a stock rear LSD and a lousy forward bias for the center diff. Even with that bias the thing kicks ass. My quattro on snow tires is parked and the Outback on all seasons is handling this Northern Michigan winter like a champ. I'll be adding a LSD to the rear of my quattro during it's upcoming build. Power is useless without motive grip.

[JediJoker7169]

For those wondering about adding an LSD to the rear of an AWD car - just do it.

So many people do the high-bias center when what they really want, probably, is a rear LSD of some kind. A high-bias T2 center will actually make torque distribution less predictable, and may not produce the desired result. If only there were a T3 option for the C5... That, in combination with a Wavetrac rear, would totally transform the driving dynamics. As it is, standard 2:1 center, standard open front, and Wavetrac rear is the combination I plan to go with, eventually.

[Scotty@Advanced]

There is a kit that installs a T3 diff into an 01E, but after it's all said and done your in it nearly 3 grand.

[Kievskiy]

Yes i can confirm that, mine oem were solid, i just hope even if they are hollow they are stronger.

I've not done a side by side comparo, but I do know the axles are larger, and hollow on the V8 cars. on the V6 cars I'm pretty sure they are solid.

And i hope the wavetrac will hold up, which it should, being used in e55/63s and m5s;) lots of hoping here but those are just parts, parts brake lol

[JediJoker7169]

There is a kit that installs a T3 diff into an 01E, but after it's all said and done your in it nearly 3 grand.

Is this the solution to which you refer? The quoted base price for the complete diff/housing solution is ~$1,860 at current exchange rates. That doesn't include VAT or shipping, of course. But it certainly has piqued my interest.

[Scotty@Advanced]

With VAT it's $2300 usd and I'd imagine shipping is another $200 bucks... But yes that is what I was speaking of.