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Help me with my new suspension please....

2003 - 2009, roadster, coupe, facelift
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pvr
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Help me with my new suspension please....

Post by pvr » Thu Dec 21, 2023 1:39 pm

How about using my old ones for display purposes instead? :P
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Help me with my new suspension please....

Post by Zedebee » Thu Dec 21, 2023 2:50 pm

Great looking build. That’s the easy bit done. :thumbsup:
2003 Maldives Blue 3.0i auto
Previously: Maldives Blue 2.5i manual (its back!) and another, and a Monaco Blue 3.0Si coupe

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enuff_zed
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Help me with my new suspension please....

Post by enuff_zed » Thu Dec 21, 2023 3:25 pm

pvr wrote: Thu Dec 21, 2023 1:39 pm How about using my old ones for display purposes instead? :P
Funnily enough I was going to ask if you wanted the old ones, as I could use parts to enable me to build up replacements and do straight swaps
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pvr
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Help me with my new suspension please....

Post by pvr » Thu Dec 21, 2023 3:34 pm

You can have them, no prob
Current:
911-50 Black - unique spec
X5M - 575 hp of fun in a V8
Abarth 595 Comp.
Golf Clipper - collectors item
Z4 3.0si Black Sapphire
VW ID.3

Previous:
Z4M Silver Grey - non flimper spec (gone to Bing)
Z4 3.0 Toledo

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chanlon1
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Help me with my new suspension please....

Post by chanlon1 » Thu Dec 21, 2023 3:37 pm

enuff_zed wrote: Thu Dec 21, 2023 3:25 pm Funnily enough I was going to ask if you wanted the old ones, as I could use parts to enable me to build up replacements and do straight swaps
Maybe interested in parts of mine when I swap the new ones in???
E86 Z4 Coupe 2006 Silver

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Help me with my new suspension please....

Post by enuff_zed » Thu Dec 21, 2023 3:53 pm

chanlon1 wrote: Thu Dec 21, 2023 3:37 pm
enuff_zed wrote: Thu Dec 21, 2023 3:25 pm Funnily enough I was going to ask if you wanted the old ones, as I could use parts to enable me to build up replacements and do straight swaps
Maybe interested in parts of mine when I swap the new ones in???
I will bear yours in mind but if PVR is happy for me to bolt his new legs on and take the old ones then I’m sorted thanks
HQ of 'Norfolk Zed Rescue'.
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Help me with my new suspension please....

Post by chanlon1 » Thu Dec 21, 2023 5:10 pm

enuff_zed wrote: Thu Dec 21, 2023 3:53 pm I will bear yours in mind but if PVR is happy for me to bolt his new legs on and take the old ones then I’m sorted thanks
No probs, I'l probably put something up here once I swap them. not sure what condition all the ancillary bits (bolts. nuts, mounts etc) will be like, but you never know, they may be in decent shape????
E86 Z4 Coupe 2006 Silver

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Help me with my new suspension please....

Post by enuff_zed » Thu Dec 21, 2023 5:57 pm

chanlon1 wrote: Thu Dec 21, 2023 5:10 pm
enuff_zed wrote: Thu Dec 21, 2023 3:53 pm I will bear yours in mind but if PVR is happy for me to bolt his new legs on and take the old ones then I’m sorted thanks
No probs, I'l probably put something up here once I swap them. not sure what condition all the ancillary bits (bolts. nuts, mounts etc) will be like, but you never know, they may be in decent shape????
A lot of people only fit new shocks, top mounts and bump stops if everything else is ok, so it’s springs, top spring plates, washers etc that get re used
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Help me with my new suspension please....

Post by TOMGREEN413 » Sat Dec 23, 2023 9:58 am

Yes, almost need a display case for them, it's a shame that they're soon be getting muddy and grimey :cry:
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Help me with my new suspension please....

Post by chanlon1 » Wed Jan 31, 2024 4:20 pm

So last night I had the car up on a ramp, and a few of us tackled changing the suspension.
Overall took about 3hrs.

Some measurements:
Beforehand, the distance between wheel arch and ground at the rear was 67.5cm
the distance at the front was 66cm

Afterwards, the rears are now 66cm, so its dropped 15mm
Drivers side front is now 65cm, so a drop of 10mm
Passenger side is now 66cm, so no drop.

Not sure why passenger side has stayed the same.
I've only driven about 4 miles with the new setup, so maybe it takes time and distance for it to settle????
E86 Z4 Coupe 2006 Silver

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Help me with my new suspension please....

Post by True-Blue » Wed Jan 31, 2024 5:52 pm

chanlon1 wrote: Wed Jan 31, 2024 4:20 pm So last night I had the car up on a ramp, and a few of us tackled changing the suspension.
Overall took about 3hrs.

Some measurements:
Beforehand, the distance between wheel arch and ground at the rear was 67.5cm
the distance at the front was 66cm

Afterwards, the rears are now 66cm, so its dropped 15mm
Drivers side front is now 65cm, so a drop of 10mm
Passenger side is now 66cm, so no drop.

Not sure why passenger side has stayed the same.
I've only driven about 4 miles with the new setup, so maybe it takes time and distance for it to settle????
Is the passenger side strut definitely fully inserted / correctly seated into the hub?
Alpina Roadster S Lux no. 204 (1 of 15 uk cars in Alpina Blue)

Previous Z4’s :E89 30i, E89 20i, E85 3.0Si (X4) E85 3.0i, E86 3.0 Si, E85 2.5si, E85 2.5i

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Help me with my new suspension please....

Post by chanlon1 » Wed Jan 31, 2024 5:55 pm

True-Blue wrote: Wed Jan 31, 2024 5:52 pm
Is the passenger side strut definitely fully inserted / correctly seated into the hub?
As far as we could tell, yes. However, we didn't take measurements last night when it was done.
I'm due back at the ramp next Tuesday, so if there's still a difference, will take another look
E86 Z4 Coupe 2006 Silver

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Help me with my new suspension please....

Post by True-Blue » Wed Jan 31, 2024 6:00 pm

chanlon1 wrote: Wed Jan 31, 2024 5:55 pm
True-Blue wrote: Wed Jan 31, 2024 5:52 pm
Is the passenger side strut definitely fully inserted / correctly seated into the hub?
As far as we could tell, yes. However, we didn't take measurements last night when it was done.
I'm due back at the ramp next Tuesday, so if there's still a difference, will take another look
Look at the underneath of the hub on each side, at how much of the shock is protruding… hope that makes sense?

Starting the obvious, but something, somewhere is causing the difference.

If you’ve built both front struts up exactly the same, with the same new parts, it can’t be the struts themselves.
Alpina Roadster S Lux no. 204 (1 of 15 uk cars in Alpina Blue)

Previous Z4’s :E89 30i, E89 20i, E85 3.0Si (X4) E85 3.0i, E86 3.0 Si, E85 2.5si, E85 2.5i

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Help me with my new suspension please....

Post by chanlon1 » Wed Jan 31, 2024 6:15 pm

True-Blue wrote: Wed Jan 31, 2024 6:00 pm
Look at the underneath of the hub on each side, at how much of the shock is protruding… hope that makes sense?

Starting the obvious, but something, somewhere is causing the difference.

If you’ve built both front struts up exactly the same, with the same new parts, it can’t be the struts themselves.
I get you. I know when the struts were built up, they were the same.
When we were lining them up to the hubs, and making sure the locator pins on the struts slotted into the hub, I do know one strut went in a lot easier than the other, but I was sure that they were the same.
Highly likely that I am wrong!

When the weather dries up, I'll take a look at the bottom of the hub and see if the same amount protrudes
E86 Z4 Coupe 2006 Silver

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Help me with my new suspension please....

Post by enuff_zed » Wed Jan 31, 2024 6:25 pm

chanlon1 wrote: Wed Jan 31, 2024 6:15 pm
True-Blue wrote: Wed Jan 31, 2024 6:00 pm
Look at the underneath of the hub on each side, at how much of the shock is protruding… hope that makes sense?

Starting the obvious, but something, somewhere is causing the difference.

If you’ve built both front struts up exactly the same, with the same new parts, it can’t be the struts themselves.
I get you. I know when the struts were built up, they were the same.
When we were lining them up to the hubs, and making sure the locator pins on the struts slotted into the hub, I do know one strut went in a lot easier than the other, but I was sure that they were the same.
Highly likely that I am wrong!

When the weather dries up, I'll take a look at the bottom of the hub and see if the same amount protrudes
Given that the knuckle bolt not only clamps the strut tight but also sits between the two lugs on the strut to prevent it moving up and down I very much doubt it isn't fully located. If it wasn't then the hub would slide off the strut. Been there, done that. Definitely don't drive it anywhere until you've checked though.
Could be one spring not quite seated. Try a few lock to lock turns.
Or simply that with weight on the car, one spring is slightly weaker than the other.
I assume you've rolled it back and forth several times to settle it all down? The front legs tend to droop inwards when they are lifted, so you need to roll it a bit to get them to realign themselves.
HQ of 'Norfolk Zed Rescue'.
Always happy to help if I can.

If the forum helped you, why not help the forum back. Thats the Z4 way! :thumbsup:
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