Front Control arm/crossmember nuts

Witchsilver

Dedicated Member
British Zeds
The M44 Massive
Joined
Jul 17, 2022
Points
41
Location
Cambridge
Model of Z
1998 z3 1.9 M44 B19 (194S1)
hey gang,
I thought I would swap out the front sway bar bushes - and then I had this bright idea of swapping all of the bushes, control arm and anything else I could find that looked old & cruddy!!

So the sway bar bushes were so easy!!! I though, great, the rest will come apart easily after spraying them with the usual rust remover/penetrators...

I ended up wasting an entire afternoon trying to undo just one nut!!

The one that goes from the control arm up through the crossmember/subframe.

Can anyone explain the easy way to do this one - I can't get decent leverage on it - there must be an easy way!!!

Is it worth me dropping the subframe? Is it simply undoing the bolts?

Thanks
 

t-tony

Zorg Expert (II)
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British Zeds
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
If you're talking about the nut on the inner ball joint I undo these from the top using a socket, long extension and a U/J on an Impact wrench. Sometimes the hard part us breaking the tapered pin free.

Tony
 

Witchsilver

Dedicated Member
British Zeds
The M44 Massive
Joined
Jul 17, 2022
Points
41
Location
Cambridge
Model of Z
1998 z3 1.9 M44 B19 (194S1)
If you're talking about the nut on the inner ball joint I undo these from the top using a socket, long extension and a U/J on an Impact wrench. Sometimes the hard part us breaking the tapered pin free.

Tony
I will have another go, see if I can get in from the top with long bar, if not then its angle grinder I reckon. I have a u/j splitter fork and a big hammer! :)
 

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t-tony

Zorg Expert (II)
Supporter
British Zeds
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
The worst.one I've done up to now after removing the nut I couldn't break the taper and ended up shirting a 1/2" drive Impact socket so it was shallower than the length of the thread then used it on the socket extension to hammer on the end of the taper. Hope that makes sense.

Tony.
 

Lee

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British Zeds
M Power
#ZedShed
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Mar 26, 2014
Points
193
Location
Basingstoke
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Z4 Coupe 3.0si
hey gang,
I thought I would swap out the front sway bar bushes - and then I had this bright idea of swapping all of the bushes, control arm and anything else I could find that looked old & cruddy!!

So the sway bar bushes were so easy!!! I though, great, the rest will come apart easily after spraying them with the usual rust remover/penetrators...

I ended up wasting an entire afternoon trying to undo just one nut!!

The one that goes from the control arm up through the crossmember/subframe.

Can anyone explain the easy way to do this one - I can't get decent leverage on it - there must be an easy way!!!

Is it worth me dropping the subframe? Is it simply undoing the bolts?

Thanks
That's a lovely job....not.

When I used to do it on the floor I would drop the roll bar to give better access to the nut. Normally a 21 or 22mm depending if its been changed before. I would then heat the nut up so it expands. Once I had cracked the nut and undone it about half way I have a cut down 21/22mm spanner so I can speed up the process. Bare in mind you'll be reheating the nut every minute or two.

Hope that helps.
 

Andyboy

Zorg Guru (II)
Joined
Jun 2, 2019
Points
119
Location
SHEFFIELD
hey gang,
I thought I would swap out the front sway bar bushes - and then I had this bright idea of swapping all of the bushes, control arm and anything else I could find that looked old & cruddy!!

So the sway bar bushes were so easy!!! I though, great, the rest will come apart easily after spraying them with the usual rust remover/penetrators...

I ended up wasting an entire afternoon trying to undo just one nut!!

The one that goes from the control arm up through the crossmember/subframe.

Can anyone explain the easy way to do this one - I can't get decent leverage on it - there must be an easy way!!!

Is it worth me dropping the subframe? Is it simply undoing the bolts?

Thanks

What's a sway bar?
 

t-tony

Zorg Expert (II)
Supporter
British Zeds
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
American for Anti-roll bar.

Tony.
 

Andyboy

Zorg Guru (II)
Joined
Jun 2, 2019
Points
119
Location
SHEFFIELD
Aaah.
 

Witchsilver

Dedicated Member
British Zeds
The M44 Massive
Joined
Jul 17, 2022
Points
41
Location
Cambridge
Model of Z
1998 z3 1.9 M44 B19 (194S1)
Yes I didnt know what they were either until I went into Halfords last week when the spotty kid had no idea what an anti-roll bar was until I said sway bar!!
It is listed as sway bar on lots of sites so hence my phrasing - sorry!!
 
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