Fitted a LSD to my e85 Z4 3.0

Someone posted a good video showing Output Flange removal / install. Here's a link to his video:
http://www.youtube.com/watch?v=Azj_C4etVCo
 
It doesn't work that easy (I obviously tried that on forehand before building the puller rig :lol: ).
For the Z4 there are large dust shields that sit in the way (see my previous post/picture where I mounted the puller on the flange, and it's also nicely visable on your picture with the opened diff). The diff you see in the video is a different diff (btw with that diff you still can align the gears and compensate the wear).
There is little or no room to get leverage without hitting the dust shields. If you bend them you'll risk hearing grinding noises for the rest of the cars life.
I'm not saying it can't be done in that way, but the video does not give a good representation.

Popping it in is easy though.
 
I disagree mate I used a aluminium drift and popped both flanges off in less than a minute.!!

Worked as a toolmaker for 16 years so i'm good with hammers lol :wink:
 
Tool makers rock :thumbsup: instrument maker hear so I would prise and press. I would then get a bloody big Bristol screwdriver :)
 
Machine monkey said:
Tool makers rock :thumbsup: instrument maker hear so I would prise and press. I would then get a bloody big Bristol screwdriver :)

Orthopaedic surgeon here, so I would hit it with a big mallet and an osteotome then get out a burr :D
 
fearless said:
How have you found the ratio change? Much difference to acceleration/cruise comfort/economy?


To be honest it's doesn't feel any different so far. But to be fair I've not had a proper sprint away from a standing start as the roads have been greasy so not perfect traction.

Think it's safe to say if you were going to change the diff to the slightly higher ratio and not do the LSD it would be pointless.

The LSD on the other hand is fantastic.!!!!
 
It's great fun now. The car feels a lot more exciting to drive in the bends and the traction control it's so intrusive. I'm slowly building up my confidence to drift properly around round-a-bouts. Dead easy to flick the back end out and control it from junctions if you want to with the dsc off :thumbsup:

Doughnuts are super easy :D
 
:lol:

plymouth said:
Mark-Z4 said:
Your from Plymouth? Handy to know...diff...fitment.... :lol:


Yeah Plymouth mate, proper pastie eater lol

Be happy to help, where are you based.?

Plymouth also, just up the top of Plympton. I've got a couple bit to get done first, fit my wheels and change the springs so it looks the part, but once it gets around to the diff I may need a few pointers when it comes to it.

How are you finding control in the wet with the diff now fitted?
 
Small world mate. I'm in plymstock. More than happy to help if you need a hand. Finding the car seems to be more sure footed in the wet. The lsd seems to work in harmony with the dsc.!!

With the open diff when the traction control stepped in you knew all about it. The lsd seems to really smooth out the system.
 
One question... Ratios...
Is that changed by the LSD that you purchased or did that change because you changed it in the one you bought from the scrappy?
 
Only changed the ratio because I brought another diff.

Two things I learnt from this, you don't need to buy a diff, and going from 3.07 to 3.23 isn't noticeable. But its all part of learning hey.
 
On the Mfactory website the diff mentioned in the install is this right? http://www.teammfactory.com/helical-lsd_165
It says in the specifications gear ratio 3.07.

Would this be a problem with my Z4 2.5 which has a gear ratio of 3.46???
 
That can be a problem.
For quaife diffs you'd need another diff model, so its best to email mfactory about this!

Are you sure you have 3.46?
PreFL 2.5i have 3.23 for manual and 3.64 for automatic according to ETK/realoem
 
According to this http://www.bokchoys.com/differential/GearRatios.htm

But indeed you are right...bmw parts says 3.23...
 
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