Torsen V8 rear diff swap! How-to.

[macspring]

Hey Mcandmar, any photos of the V8 flanges I need for my V8 diff ?

Thanks.

[V6quattro]

Somebody running a torsendiff with 600hp/700Nm? I really like to know if it stays together.

[Rusty]

audiman destroyed one with that sort of power.

[Error404]

Yeah I wouldn't think it'd last very long with that kind of torque, but Tom wasn't exactly kind to his either

[Rusty]

ADI 2007 I think was its last hurrah!

[Rocco]

Somebody running a torsendiff with 600hp/700Nm? I really like to know if it stays together.

What Tom ? Me ?

I had a V8 Torsen diff and didn't break ...

~575hp and 700nm
with those things the question is,for how long will survive?
And most important... Maintenance and behavior at the steering wheel

[|CL|NIKI]

I've blow mine before 15 days with 660hp/720Nm and 10 very hard start/lunches from 6500rpm with very very bad Toyo's - 195/55 15" T1R.......
The V8 torsen is piece of s..t. Not good at all.

[Rocco]

I've blow mine before 15 days with 660hp/720Nm and 10 very hard start/lunches from 6500rpm with very very bad Toyo's - 195/55 15" T1R.......
The V8 torsen is piece of s..t. Not good at all.

Do you know other good diff that would hold for +15 days?

[Error404]

I've blow mine before 15 days with 660hp/720Nm and 10 very hard start/lunches from 6500rpm with very very bad Toyo's - 195/55 15" T1R.......
The V8 torsen is piece of s..t. Not good at all.

You gave this abuse to a 20 year old, 100k mile old diff that was designed for use with half the power & torque you're using, and you are surprised when it breaks?
Do you have standard rods and brakes or did you think they might no cope with the power & torque?

[V6quattro]

Got one cheap so i will give it a try. Is it also possible to swap it in a S4 B5 rear diff?

[mcandmar]

I've blow mine before 15 days with 660hp/720Nm and 10 very hard start/lunches from 6500rpm with very very bad Toyo's - 195/55 15" T1R.......
The V8 torsen is piece of s..t. Not good at all.

I've done half a dozen launches like that in my stock S2 and my 1st gear is shagged

Got one cheap so i will give it a try. Is it also possible to swap it in a S4 B5 rear diff?

I'm fairly sure it will, i almost bought an A4 quattro diff for my torsen conversion as i liked the clean casing without the diff lock gubbins. Only problem is it had the wrong ratio so i used the S2 diff housing instead. AFAIK S4 and RS4 diffs are the correct ratios.

[|CL|NIKI]

You gave this abuse to a 20 year old, 100k mile old diff that was designed for use with half the power & torque you're using, and you are surprised when it breaks?
Do you have standard rods and brakes or did you think they might no cope with the power & torque?

Rods only in this engine! Hta 86 at 2bar. Stock rotors and calipers -yes. Yesterday I run Toyo 888 ( 1.8 bar inside - will go lower - 1.4)- all ready with NM rear dif with largest CV holders UNlocked!!! 5 hard start/lunches from 6800-7000rpm - 1.65/18metres.
No any issues or noises from g.box or r.diff.

[Henkjan]

.... Is it also possible to swap it in a S4 B5 rear diff?

is that also a torsen?

[kaaperdaja]

Got one cheap so i will give it a try. Is it also possible to swap it in a S4 B5 rear diff?

Yes, it can be mounted inside the S4 B5 diff, one side of the torsen diff should be cut smaller in diameter if I remember correctly. I have V8 torsen's in S2 and B5 S4 in front and in rear diffs so 3x torsen diffs. Really fun to drive and car is very predictable when going sideways in corners. Having only rear V8 diff wasn't so good to drive. Only thing is you have to disable EDL in S4 otherwise you can't launch it. The EDL will cut in when it detects one wheel is turning more than the other and stops it with brake which will brake the torsen.

[V6quattro]

is that also a torsen?

No, only a Audi V8 has a torsen rear diff.

Yes, it can be mounted inside the S4 B5 diff, one side of the torsen diff should be cut smaller in diameter if I remember correctly. I have V8 torsen's in S2 and B5 S4 in front and in rear diffs so 3x torsen diffs. Really fun to drive and car is very predictable when going sideways in corners. Having only rear V8 diff wasn't so good to drive. Only thing is you have to disable EDL in S4 otherwise you can't launch it. The EDL will cut in when it detects one wheel is turning more than the other and stops it with brake which will brake the torsen.

Thanks for the info

I have a S2 so no problems with EDL

And what was your experience with only a rear torsen diff? Bad handling? And what type off torsen diff do you use in the front?