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Discussion Starter #1
I just completed an install of new eibach springs w/Tokico cartridges.
The issue is, the front of my Z is now about an inch taller than the rear.
Will the springs settle, or will I have to cut the front some??
Manny240z
 

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> I just completed an install of new eibach
> springs w/Tokico cartridges.
> The issue is, the front of my Z is now about
> an inch taller than the rear.
> Will the springs settle, or will I have to
> cut the front some??
> Manny240z
They'll settle some but I don't know about a whole inch, I'd call the Eibach tech line and ask them to be sure.
 

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> They'll settle some but I don't know about a
> whole inch, I'd call the Eibach tech line
> and ask them to be sure.

This has come up a few times before. The spring rates for the front are softer than those in the rear, and if the springs intended for the front get installed in the rear, and vice versa, that is exactly the result you would expect to see. Double check to make sure you haven't swapped the front and rear springs. If this is what happened, you shouldn't feel too bad - you wouldn't be the first to make this mistake.
 

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Discussion Starter #4
It looks like all eibach springs are labeled with the following : xxxx.X01 or xxxx.X02.
Part numbers ending with the number 1 are for the front, I wasn't sure until I read the instructions.
I think I will give them a call on Monday.

Has anyone performed the inner control-arm re-position / bump steer fix??
I was wondering if the front would come down any, after the relocation…
Manny240z
 

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> It looks like all eibach springs are labeled
> with the following : xxxx.X01 or xxxx.X02.
> Part numbers ending with the number
> 1 are for the front, I wasn't
> sure until I read the instructions.
> I think I will give them a call on Monday.

> Has anyone performed the inner control-arm
> re-position / bump steer fix??
> I was wondering if the front would come down
> any, after the relocation…
> Manny240z

The 'bump steer fix' will have no effect on the ride height. This is determined solely by the spring rate, spring length, and the position of the upper and lower spring perches on the strut.
If Eibach tells you that you have the springs installed correctly, I'd hold off on cutting the spring to lower the front. This will increase the spring rate, and will not give you the balance that Eibach intended with this setup - the change will be in the direction of understeer. If the springs are in fact installed correctly, and they won't settle out, you'd be better off relocating the lower spring perch to adjust your ride height.

As always when changing your ride height, make sure that you leave yourself with enough suspension travel - you don't have that much to start with.
 

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> The 'bump steer fix' will have no effect on
> the ride height. This is determined solely
> by the spring rate, spring length, and the
> position of the upper and lower spring
> perches on the strut.
> If Eibach tells you that you have the
> springs installed correctly, I'd hold off on
> cutting the spring to lower the front. This
> will increase the spring rate, and will not
> give you the balance that Eibach intended
> with this setup - the change will be in the
> direction of understeer. If the springs are
> in fact installed correctly, and they won't
> settle out, you'd be better off relocating
> the lower spring perch to adjust your ride
> height.

> As always when changing your ride height,
> make sure that you leave yourself with
> enough suspension travel - you don't have
> that much to start with.

I have the eibach springs and the Illumina shocks and it sounds like you have a problem because my car sits level.

Good luck-evan
 
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