GT lowered - Problems?
I agree with measuring the springs off of the car, there is a chance that they are not the same even if they have the same model number. Another idea is one of the springs could have failed, so it would not provide the correct spring rate for the car.
Issue resolved 
Monday night I started to install the stock rear springs, I noticed something that I totally over looked. When I pulled the stock springs the "first time" one of rubber isolators came out with it. I didn't think much of it, didn't seem like a big deal... It turned to be a big deal and the root cause of my issue.
Seems there's a little plastic keeper that holds the isolator up in the pocket and kind of guides the spring on to the perch. Looks like one of those plastic push on button keepers used to hold on a bumper cover and other body components. When it fell out the first time I just set it on the new spring and installed the spring... no big deal right ?!?!
When it fell out the second time while switching the springs around I didn't think much of it again, it feel out last time... no big deal. BUT, I was sure to pay close attention to the spring as I jacked the rear back up and everything seemed to seat well.
This last time when I pulled the springs I yanked the isolator out from the other side and saw that button fastener on there. Then I looked at the other one and noticed it was all smashed over. So I pulled it off the isolator and to be safe I pulled it off the other one as well. I also put a little poly lube on the top sides of the isolators to help them seat on the perch.
To my surprise, after putting it all back together, my ride height issue was gone. I guess that little keeper was guiding the spring off the perch, just enough to cause a problem?
So thanks to all for the help! I'll try and get some pics up with the Vogtlands installed and I guess I'll have a brand new set of Eibach for sell soon, LOL

Monday night I started to install the stock rear springs, I noticed something that I totally over looked. When I pulled the stock springs the "first time" one of rubber isolators came out with it. I didn't think much of it, didn't seem like a big deal... It turned to be a big deal and the root cause of my issue.
Seems there's a little plastic keeper that holds the isolator up in the pocket and kind of guides the spring on to the perch. Looks like one of those plastic push on button keepers used to hold on a bumper cover and other body components. When it fell out the first time I just set it on the new spring and installed the spring... no big deal right ?!?!
When it fell out the second time while switching the springs around I didn't think much of it again, it feel out last time... no big deal. BUT, I was sure to pay close attention to the spring as I jacked the rear back up and everything seemed to seat well.
This last time when I pulled the springs I yanked the isolator out from the other side and saw that button fastener on there. Then I looked at the other one and noticed it was all smashed over. So I pulled it off the isolator and to be safe I pulled it off the other one as well. I also put a little poly lube on the top sides of the isolators to help them seat on the perch.
To my surprise, after putting it all back together, my ride height issue was gone. I guess that little keeper was guiding the spring off the perch, just enough to cause a problem?
So thanks to all for the help! I'll try and get some pics up with the Vogtlands installed and I guess I'll have a brand new set of Eibach for sell soon, LOL
Wow, the little things that can go wrong the first time you attempt something you've never done before. Thanks for the info. I'll be installing the MM Starter box kit on my car next month and will be sure to watch for those spring seat issues.
I've heard the vogtland's are really nice TUV certified springs, like the H&R race units that come with the MM kit. I can't wait to get my suspension upgraded...
I've heard the vogtland's are really nice TUV certified springs, like the H&R race units that come with the MM kit. I can't wait to get my suspension upgraded...
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Dragonus18
4.6L (1996-2004 Modular) Mustang
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Sep 9, 2015 01:21 AM




