vinyl_tien

Hi
I just got a G28 10 trans, I want to install it to my 90 S4 Auto(with PSD), Is there any possible I mod G28 10 trans for a G28 55 PSD trans? Can I use the Auto PSD(LSD) parts on G 28 10?
Many thanks!

928er

not without complete disassembly and machine work to the case. I would just use the LSD from an earlier model in the g2810

john gill

In my opinion not possible , the G10 case does not have the mounting points for the psd hardware , so you would have to find a way to create the mounting points . This would involve welding on the aluminium case and thus would eventually create to much distortion .
You could certainly use a standard locking diff with the g10 and remove sell the psd components .

fraggle

Punt psd and switch to the older LSD setup!

When I'm done with modifying my '87 box I'll let you know how it goes.

Lizard928

I disagree. If one were to make a piece in a Cnc machine, and mill the correct size hole in the case it could be TIG welded with zero distortion.

But it's not the recommended course of action.

john gill

Yes looked at those options , but Machinists and engineers with a lot more experience than me decided that it would not work due to the amount distortion that would be involved .
DIdnt want to try after all the negative advice .

vinyl_tien

Hi fraggle
Do you have G28 55 detail picture? or is any one can support for me, Thank!

vinyl_tien

Thanks you guy's help, is any one can support me the PSD manual trans picture?

damon54

Couple of questions here. What if he bought a G28 55 shell & moved over the internals? What all would he be missing?

Is this Getrag Case a 262G which Bimmer followers & Getrag call a 265/5? I realize the 928 version has unique Borg Warner gears & was not an off the shelf Getrag.

Must say I am a tad surprised @ the lack of 5 speed options available thru swaps & bellhousing Mods for a marque so richly supported in terms of other current improvements?

Lizard928

Damon,

I will almost guarentee there are no spare G55 empty cases for purchase.
If he already had one then yes swapping the guts is possible. But reshimming will be a pita.

Vilhuer

Not really surprising considering where 928 gearbox is located etc. 928 drivetrain is not your average engine/clutch/gearbox package and its not Getrag gearbox.