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Old 07-12-2010, 04:46 PM   #1
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question regarding install of Eibach springs

The strut tower ends seem to be out more on the ends after my eibach install.....Even more soo when i turn the wheels is this normal?
Wheels straight
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Wheels turned left left strut tower.

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Is all this play normal after drop springs?
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Old 07-12-2010, 05:18 PM   #2
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I just went out and checked and my stock springs do the same thing.
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Old 07-12-2010, 05:22 PM   #3
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I just went out and checked and my stock springs do the same thing.
Thanks mate just noticed this today and had me worried
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Old 07-12-2010, 05:39 PM   #4
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Thanks mate just noticed this today and had me worried
How do they feel on the road, I'm going to try to get mine installed this weekend.
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Old 07-12-2010, 06:06 PM   #5
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How do they feel on the road, I'm going to try to get mine installed this weekend.
Awesome ive never bottomed out and we have shitty roads!
I asked them to cut the bumpstop 1 inch on each wheel to give my shocks more room to work and was its amazing......
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Old 07-28-2010, 11:24 AM   #6
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Anyone else have an opinion is this a good install or need to take it back!?
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Old 07-29-2010, 05:01 PM   #7
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Originally Posted by Ex-stang View Post
The strut tower ends seem to be out more on the ends after my eibach install.....Even more soo when i turn the wheels is this normal?
Wheels straight
Attachment 145296
Wheels turned left left strut tower.

Attachment 145297



Is all this play normal after drop springs?
That is normal. Every car is like that whether they have OE or aftermarket springs installed. No need to take it back.
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Old 07-31-2010, 05:10 PM   #8
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That is normal. Every car is like that whether they have OE or aftermarket springs installed. No need to take it back.
Thanks man for the info!
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Old 08-04-2010, 10:17 AM   #9
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The ZETA II Camaro is derived from the ZETA G8. The ZETA G8 is derived from the VZ Pontiac GTO. All are Holden based GM platforms. The earlier versions through the G8 used a rubber donut for the strut mount. Driven hard they wore out quickly. The ZETA II Camaro use a steel 'cake pan' covered in rubber with fiber reinforced plastic bearing plates and spring perch. The ZETA II mount will not suffer the same wear issues the earlier version mounts did.

The articulation you can see through the movement of the strut retaining plate is required to prevent the front suspension from binding when the wheels are turned. It also graphically illustrates why the Camaro does not require massive amounts of front camber. As the wheels turn camber increases due to the position of the strut shaft in the upper mount.
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Old 08-04-2010, 10:28 AM   #10
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Is cutting the bump stops the correct way to get the softest ride after installing 1" drop springs??
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Old 08-04-2010, 10:38 AM   #11
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I cringe when i hear cut the bumpstops. That means we are getting closer to the bottom of the strut on full compression and closer to possible damage of the foot valve. I am sure that the company did research this and think they are within the safe zone. That said, the OE safe zone is based on a full OE size bumpstop. The other issue you get into when you cut a bumpstop is coil fatigue. The more you fully scrag, fully compress a spring the faster the coil will fatigue and lose ride height. A good portion of our business in the GTO, HHR. Cobalt, Solstice. G8. Charger. Magnum, Challenger... markets is replacing whatever brand coils that have sighed so far the ride quality suffers from coils bind. Our solution is simple. Install NEW OE bumpstops that are not cut and replace the sagged coils with Pedders.

On second thought, EVERYONE should cut their bumpstops today!!!!
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Old 08-04-2010, 10:43 AM   #12
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Thanks JusticePete, Hey Brett and someone with Eibach, what is your take on this to have the softest ride?
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Old 08-04-2010, 11:34 AM   #13
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Coil bounce comes from uneven preloads in the bushes.

Think of it this way. If you removed your lower front control arm and set it in a vice by clamping down hard on the steel ferule bonded to the rubber bush would it hold straight. The answer would be yes. Is the jaws grip the ferule as tight as the bolt on the car you can raise of lower the arm, but with resistance. When you release it, it will spring back to where it was before you twisted the rubber around the ferule. That is why bushes must be timed to ride height.

Take your car to the alignment shop. Have the tech loosen every rotational bolt / bush in the suspension. Drive the car SLOWLY and CAREFULLY around the lot with the bolts a couple of turns loose. Put it back on the alignment lift. Without taking any weight off the wheels, tighten all the bolts. All the bushes are now timed to your new lowered ride height.

This is how you do the job right and GET THE BEST RIDE.
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Old 08-04-2010, 02:03 PM   #14
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Is cutting the bump stops the correct way to get the softest ride after installing 1" drop springs??
2010 2-Tone,

The Pfadt lowering kit provides a 1.25" drop from OE height (appx). I do not know the install procedure for any other brands that have 1" drop springs, or their spring rates.

Because of the spring rate we have chosen, and as a result of this change in static ride height, the usable region of the damper travel is offset, to be approximately 1.25" lower. The Camaro has a very limited amount of bump travel to begin with, before contacting the OEM bumpstops. We recommend to trim 1" from the bumpstop in our installation procedure to give you back that 1.00" of damper travel, that is not influenced by the added spring rate of the bump rubber. This is a "just in case" scenario for bit hits. We leave some bump stop in place to give a rising rate on big hits. Because dampers function by resisting the shaft velocity, this offset operating region has no negative effects on the component durability, or performance or fatigue. It just isn't a problem at all. Nor will this have any effect on coil fatigue with a properly manufacturers spring.

This conclusion was made from testing, and experiencing harsh bump characteristics that some here have mentioned on the forum, who have not cut them. This of course, is just our position in regards to our own product installation. This is what makes a soft ride. Re-timing the bushings is also a great suggestion if there are any concerns in ride quality to begin with.
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Old 08-04-2010, 07:35 PM   #15
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To the best of my knowledge, Eibach does not instruct you to cut Camaro bumpstops. Perhaps an Eibach coil owner will post the Eibach instructions.
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Old 08-04-2010, 08:07 PM   #16
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To the best of my knowledge, Eibach does not instruct you to cut Camaro bumpstops. Perhaps an Eibach coil owner will post the Eibach instructions.
The Eibach instructions specifically tell you not to cut the bump-stops.
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Old 08-04-2010, 08:09 PM   #17
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The Eibach instructions specifically tell you not to cut the bump-stops.
Thank you sir!
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Old 08-05-2010, 08:56 AM   #18
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The Camaro has a progressive bump stop to begin with. The upper portion of the stop is very soft and you can easily compress it almost an inch simply by squeezing it in your hand. While cutting it is probably harmless, we don't recommend it mainly because it doesn't achieve anything except give you a visual appearance of more shock travel.
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Old 08-05-2010, 10:53 AM   #19
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This thread is about EIBACH and what need to be done to correctly install EIBACH. Can we please all stay on topic and forget selling parts to a person that already biught EIBACH parts?

EIBACH instructions say do not cut the bumpstops -- end of discussion.

So do we all agree to not cut the bumpstops and time the bushes to your new ride height are the best way to get the pest performance and ride quality out of a set of EIBACH springs.
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Old 08-06-2010, 01:32 PM   #20
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This thread is about EIBACH and what need to be done to correctly install EIBACH. Can we please all stay on topic and forget selling parts to a person that already biught EIBACH parts?

EIBACH instructions say do not cut the bumpstops -- end of discussion.

So dwe all agree o not cut the bumpstops and time the bushes to your new ride height are the best way to get the pest performance and ride quality out of a set of EIBACH springs.
Ummm...I assume this post was not meant for me and it was just coincidence that it followed my non-sales related post on the subject? It's pretty obvious that you as a fellow vendor participated in more of this conversation than any other vendor has...
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