Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.

Springs

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
Post Reply
birdy_z4
Member
Member
Posts: 269
Joined: Mon May 10, 2021 10:31 am
Location: Warwickshire

Springs

Post by birdy_z4 » Thu Mar 28, 2024 10:55 am

Car been in for mot and failed on rear broken spring

Grrrr

So was thinking how hard is it to change the springs front and rear and what tool to compress the springs have you used

Online
User avatar
bigwinn
Lifer
Lifer
Posts: 4633
Joined: Wed Jul 08, 2020 7:13 pm
Location: Lincoln UK
Contact:

Springs

Post by bigwinn » Thu Mar 28, 2024 11:34 am

Rear is pretty easy- no compressors needed

Fronts are more challenging needing compressors
If the forum helped you, why not help the forum back. Thats the Z4 way! :thumbsup:

Image


EWS Delete PM me
Coding- airbags etc PM me

User avatar
Rucky
Member
Member
Posts: 396
Joined: Wed Jan 23, 2019 3:07 pm
Location: Glos, England

Springs

Post by Rucky » Thu Mar 28, 2024 12:22 pm

Agree Rears just slip in.
The front springs are barrel shapped and regular spring compressors can slip off.
I held the strut in a vice and used 2 compressors and a g cramp.
If you dont have a good workshop find a local shop with a hydrauic compressor to do the fronts and you wont lose any fingers or face.
04 2.5i Titan silver - 1st Z4 now sold on
07 3.0si Silver Grey M Sport pak.
X5 and assorted motorbikes

john-e89
Lifer
Lifer
Posts: 11079
Joined: Tue Feb 10, 2015 10:27 pm

Springs

Post by john-e89 » Thu Mar 28, 2024 1:43 pm

There’s a lot of spring travel on these E89’s fronts, you have to wind them down a lot to get them off the strut, so a LOT of tension on the compressors. It’s diy’able for sure but if you have any doubts about what you’re doing, I’m not saying you do, just if, then as Rucky says take it somewhere and let them do it, if the spring slips under that much tension you can properly hurt yourself. As I do all my own repairs/maintenance I bought a foot operated spring compressor with a cage round it as I simply don’t trust the small threaded ones enough under that much tension, they won’t break but if they slip it’s game over, not worth it for a job you don’t do very often. Imho of course.
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29

birdy_z4
Member
Member
Posts: 269
Joined: Mon May 10, 2021 10:31 am
Location: Warwickshire

Springs

Post by birdy_z4 » Thu Mar 28, 2024 3:01 pm

bigwinn wrote: Thu Mar 28, 2024 11:34 am Rear is pretty easy- no compressors needed

Fronts are more challenging needing compressors
Thanks make of springs have you fitted before as I’m being told by the Indi the oem don’t fit well and to use bmw

Online
User avatar
bigwinn
Lifer
Lifer
Posts: 4633
Joined: Wed Jul 08, 2020 7:13 pm
Location: Lincoln UK
Contact:

Springs

Post by bigwinn » Thu Mar 28, 2024 5:18 pm

Usually decent quality second hand ones- put a wanted ad up on here?
If the forum helped you, why not help the forum back. Thats the Z4 way! :thumbsup:

Image


EWS Delete PM me
Coding- airbags etc PM me

User avatar
B21
Lifer
Lifer
Posts: 5466
Joined: Tue Oct 05, 2021 7:15 pm
Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia

Springs

Post by B21 » Thu Mar 28, 2024 8:08 pm

birdy_z4 wrote: Thu Mar 28, 2024 3:01 pm
bigwinn wrote: Thu Mar 28, 2024 11:34 am Rear is pretty easy- no compressors needed

Fronts are more challenging needing compressors
Thanks make of springs have you fitted before as I’m being told by the Indi the oem don’t fit well and to use bmw
Has he tried Bilstein, Supplex, Eibach ?
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is :thumbsup:

Online
flybobbie
Lifer
Lifer
Posts: 4051
Joined: Sat May 25, 2013 8:27 pm
Location: Stourbridge

Springs

Post by flybobbie » Thu Mar 28, 2024 11:08 pm

Rear barrel springs come off easy. The front are normal springs. Simple cheapo spring compressors do the job. Whilst you got them off i would replace the top mount bearing the shock bolts to. I had one worn out, wheel rocked slightly.

birdy_z4
Member
Member
Posts: 269
Joined: Mon May 10, 2021 10:31 am
Location: Warwickshire

Springs

Post by birdy_z4 » Fri Mar 29, 2024 9:55 am

flybobbie wrote: Thu Mar 28, 2024 11:08 pm Rear barrel springs come off easy. The front are normal springs. Simple cheapo spring compressors do the job. Whilst you got them off i would replace the top mount bearing the shock bolts to. I had one worn out, wheel rocked slightly.
Do you need the spring compressors for the rear ?

Post Reply