Found the rattle (Help wanted)

[stevie_a]

Hi folks

had the car up on a car lift today ( rather than a drive on ramp)

I have lots of questions for you all

1. what is the correct name for the bushes right at the back of the wishbone ( sub frame bush?)

you can see them on this first video



OK next questions

2. has anybody got an exploded view of this part?

3. how much do they cost

4. best place to get them

5, is there a how to do video of thread about fitting?

I did tell you there was questions

this is another video of what is happening to then



Thanks in advance

 

[Aceman]

Re: Found the rattle

Glad you have found the culprit Steve.

Here is a link to the Realoem page showing you the exploded view and also the part number references for the various parts.

http://www.realoem.com/bmw/showparts.do?model=CK92&mospid=48084&btnr=33_0998&hg=33&fg=30

Yes it is called the subframe bush and are known to allow excessive movement when they are wron which is obviously what has happened with yours. You can replace them with OEM or you can also replace them with poly bushes which are supposed to make quite a remarked improvement to the rear end feel of the car.

All Z3's use the same bush even the ///M's so are all subject to this kind of failure, here is a link to the replacement powerflex bushes;

http://www.ebay.co.uk/itm/BMW-Z3-E3...arts_Vehicles_CarParts_SM&hash=item43a995f228

And here are OEM type although I would get from the dealers if you intend to replace with OEM;

http://www.ebay.co.uk/itm/BMW-E36-C...arts_Vehicles_CarParts_SM&hash=item43b3609d6b

You need a tool to extract them from the subframe something like this one but it says trailing arm rather than subframe, maybe worth contacting them though as they may do something to do the job.

http://www.ebay.co.uk/itm/BMW-3-Ser...its=Car+Make:BMW|Model:Z3&hash=item2ec32ad867

Hope this helps.

 

[stevie_a]

Fantastic thanks

I will not be doing the job as i do not have time or space to do it at the moment

but i know a man who will

 

[stevie_a]

I am taking it that this bush is for the bin to you looking at the video ( yes)

 

[Aceman]

It would seem that way as you shouldn't be getting that much movement I wouldn't have thought. The bush is pressed into the subframe really tight hence the reason for a tool to either extract or install it. I would be tempted to go with powerflex bushes after reading about how they improve the back end handling. You can also stiffen the original bushes by putting inserts in side them but in your case they definatly need replacing.

Here is a link to the insert fitting guide more for the photo's in your case;

http://forum.roadfly.com/threads/12480799-Rear-subframe-bushing-reinforcement-tabs

Edit : Mmm, it seems from reading this thread there is a certain amount of vertical movement to be expected with these bushes.

http://www.zroadster.net/forum/viewtopic.php?f=15&t=14113&p=316262&hilit=subframe+bush#p316262

Another intering thread here regarding removal of the bushes.

http://www.zroadster.net/forum/viewtopic.php?f=5&t=15793&p=151786&hilit=subframe+bush#p151786

 

[CokerAir]

Steve-
Were you able to accomplish this repair and did it fix your rattle issue?
-Bob

 

[stevie_a]

Yes did the bushes, it did help but not fix ...

Now believe it is the diff bush....

http://www.ebay.co.uk/itm/110869548837?_trksid=p2060778.m1438.l2649&ssPageName=STRK:MEBIDX:IT

 

[CokerAir]

I suppose the only way to be certain is to replace everything at once!
That's going to get expensive...

 

[t-tony]

It's the tank rattle, I think I've got it too.

Tony.

 

[Lee]

Noooo @t-tony