QUAFE LSD swap

[Kiwi Peter]

Hi all
We have a client selling his car and wants Advan to do the parts sale first off
we have a QUAIFE LSD complete ready for install while you wait price $1500 firm, this is the fitted price.

this is for the steptronic 135i and will fit some 335i with dive shaft CV joint.

The deal is a swap over

Ring the shop 96483366 for more info
Peter

[froop]

Damn, why couldn't this be for a manual =(

[dontask]

This is the 2.56 drive ratio?

[John_01]

I think the Steptronic is 3.46 ratio. Not the same as DCT 2.56.

[flinchy]

Originally Posted by John_01

I think the Steptronic is 3.46 ratio. Not the same as DCT 2.56.

huh i didn't know there was a proper OEM 2.56. that's cool!

3.46 is correct though, 6MT being 3.08

[Drawn05]

Hi peter, is it possible for a 6mt 135 to use the shorter ratio 6at diff? Say if they bought a 6at drive shaft that was just lying around at advan, would fit easily?

From experience, the shorter ratio is a much better option than stock. Mine is 3.85 and it is perfect for 6at.

[Kiwi Peter]

Correct 3.46 it is

[Kiwi Peter]

Originally Posted by Drawn05

Hi peter, is it possible for a 6mt 135 to use the shorter ratio 6at diff? Say if they bought a 6at drive shaft that was just lying around at advan, would fit easily?

From experience, the shorter ratio is a much better option than stock. Mine is 3.85 and it is perfect for 6at.

Yes it can be done BUT the auto uses the smaller diff and it would fail with the manual trans.

[froop]

Originally Posted by Drawn05

Hi peter, is it possible for a 6mt 135 to use the shorter ratio 6at diff? Say if they bought a 6at drive shaft that was just lying around at advan, would fit easily?

From experience, the shorter ratio is a much better option than stock. Mine is 3.85 and it is perfect for 6at.

I spoke to Peter asking a similar thing but he said that the 6AT diff is a lightweight version and probably wouldn't be appropriate for a high powered manual car. I believe they also have a much smaller diff housing as a result.

[DR-JEKL]

Originally Posted by froop

I spoke to Peter asking a similar thing but he said that the 6AT diff is a lightweight version and probably wouldn't be appropriate for a high powered manual car. I believe they also have a much smaller diff housing as a result.

Yup you're going to need my wavetrac

[Kiwi Peter]

NOT GONE the 335 we have here today has the big diff so no swap, needs to be an 08 on 335i or 135i it seems that 99% of the 335i steps up to 11/07 have the large diff.
So all step 335i from 01/08 have the small diff same as the 135i step

[flinchy]

Originally Posted by skycat

Yes it can be done BUT the auto uses the smaller diff and it would fail with the manual trans.

quick (hopefully) q on this point - since i've got the same 188mm in mine... but it'll go in with the 6MT..

have you seen the small diff's die under power?

i know there's a fair few 6AT's that have seen pretty decent power, i haven't seen much on the diff failing though?

[drjekl]

Originally Posted by flinchy

quick (hopefully) q on this point - since i've got the same 188mm in mine... but it'll go in with the 6MT..

have you seen the small diff's die under power?

i know there's a fair few 6AT's that have seen pretty decent power, i haven't seen much on the diff failing though?

They do fail, the larger pumpkin is much stronger and is the one to have

[flinchy]

Originally Posted by drjekl

They do fail, the larger pumpkin is much stronger and is the one to have

got any links cos i don't want it to be true! haha - i haven't seen many N54 6AT's fail at 500hp+, usually been the transmission itself like BMS's

if i had to change, i'd probably go an M3 subrame and 3.15 diff, though i really want to keep the 3.46...

[drjekl]

Originally Posted by flinchy

got any links cos i don't want it to be true! haha - i haven't seen many N54 6AT's fail at 500hp+, usually been the transmission itself like BMS's

if i had to change, i'd probably go an M3 subrame and 3.15 diff, though i really want to keep the 3.46...

Most owners don't post up their lunched 'diffs', I'm sure southernBM or advan will tell you of a few they have seen.

Eventually when my m3 setup is in, I will be selling my 335i rear end with newish brake rotors/pads and it has the large pumpkin 3.08 large diff.

[flinchy]

Originally Posted by drjekl

Most owners don't post up their lunched 'diffs', I'm sure southernBM or advan will tell you of a few they have seen.

Eventually when my m3 setup is in, I will be selling my 335i rear end with newish brake rotors/pads and it has the large pumpkin 3.08 large diff.

Mmm fair enough

I can only find broken halfshafts via wheel hop on the rear-end side of things

Going m3 wouldn't be too bad, but then m3 halfshafts instead of driveshaftshop...

And then i'm not sure about the rear brake setup.. Eh i'll just follow your journey for that stuff haha

Your diff would be welded though no? Rather not have a welded >_<

And i'm trying to avoid MUCH longer final drive too

[drjekl]

Originally Posted by flinchy

Mmm fair enough

I can only find broken halfshafts via wheel hop on the rear-end side of things

Going m3 wouldn't be too bad, but then m3 halfshafts instead of driveshaftshop...

And then i'm not sure about the rear brake setup.. Eh i'll just follow your journey for that stuff haha

Your diff would be welded though no? Rather not have a welded >_<

And i'm trying to avoid MUCH longer final drive too

I would prefer oem m3 DS's over DSS shafts, as there would be minimal delays in acquiring a replacement set and they are cheaper (the m3 DS's are much beefier in comparison to the oem 135i/335i items)

You can retain the oem 135i brake setup AFAIK with the m3 rear end.

My oem 335i has a large pumpkin bolted diff

[Jeef Beef]

Originally Posted by flinchy

got any links cos i don't want it to be true! haha - i haven't seen many N54 6AT's fail at 500hp+, usually been the transmission itself like BMS's

if i had to change, i'd probably go an M3 subrame and 3.15 diff, though i really want to keep the 3.46...

Doesn't it have a lot to do with the torque converter in an auto copping a lot of the abuse during takeoff/gear changes or when the output speed is significantly different from the engine input? You torque converter is going to die with excessive power before your diff does.

The manual is a direct connection which doesn't have the 'softening' effect of the torque converter, especially when you think about the smack between full bore gear changes.

[flinchy]

Originally Posted by drjekl

I would prefer oem m3 DS's over DSS shafts, as there would be minimal delays in acquiring a replacement set and they are cheaper (the m3 DS's are much beefier in comparison to the oem 135i/335i items)

You can retain the oem 135i brake setup AFAIK with the m3 rear end.

My oem 335i has a large pumpkin bolted diff

mmmm, the DSS stuff is pretty solid though

expensive... i'd just rather not change from the 3.46fd is my main thought haha

Originally Posted by Jeef Beef

Doesn't it have a lot to do with the torque converter in an auto copping a lot of the abuse during takeoff/gear changes or when the output speed is significantly different from the engine input? You torque converter is going to die with excessive power before your diff does.

The manual is a direct connection which doesn't have the 'softening' effect of the torque converter, especially when you think about the smack between full bore gear changes.

yeah, the torque converter mainly dieing in the ass, but lots of people have had the 6MT's stop holding specific gears, slipping high in 4th or 5th etc. wearing out the gearsets.

true, true - i'm trying to find any results on broken 188mm diffs - found a few results saying they should be good for 800+whp/500ft-lb+, which should suit me alright - E36 M3 turbo guys run the 188mm, some people choose to go to the 210mm

[Kiwi Peter]

We still have the diff who wants a swap

[Gemballa1980]

Originally Posted by skycat

NOT GONE the 335 we have here today has the big diff so no swap, needs to be an 08 on 335i or 135i it seems that 99% of the 335i steps up to 11/07 have the large diff.
So all step 335i from 01/08 have the small diff same as the 135i step

That was my 335i in there.

Peter, I don't suppose you know if it's a bolted or welded setup in there??

[drjekl]

Originally Posted by Gemballa1980

That was my 335i in there.

Peter, I don't suppose you know if it's a bolted or welded setup in there??

Shit that's some bad luck! All the way from Canberra then you find out the bad news? (I hope not)