GT Performance Mods 2005+ Mustang GT Performance and Technical Information

eibach pro kit...bumpy ride

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Old Mar 5, 2006 | 01:26 PM
  #41  
FireFighterHill's Avatar
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well its a dirt/sand road i live about 50 yard down it its rutted out of course. it sounds like a spring our strut is loose its driving me crazy Ive rechecked everything!
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Old Mar 5, 2006 | 02:07 PM
  #42  
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<div class='quotetop'>QUOTE(FireFighterHill @ March 5, 2006, 2:29 PM) Quoted post</div><div class='quotemain'>
well its a dirt/sand road i live about 50 yard down it its rutted out of course. it sounds like a spring our strut is loose its driving me crazy Ive rechecked everything!
[/b][/quote]

Adam,
I haven't read every post on this thread but are you sure the sound is coming from the rear? I installed the FRPP handling package which is for the most part Eibach and had a similar sound that you are describing. Drove me nuts for 2 weeks until we finally found it. It was the strut link from the front sway bar, on the strut end was loose on the drivers side. With the stiffer suspension and the strut tower bar it didn't seem to matter which wheel hit a rut or bump the sound was the same. At times I would have swore it came from the rear but once we found it, tightened it and retorqued everything no more noise. The only time I bottom out the rear end is if I enter my driveway with the wheels perfectly straight and too fast! Check the front end out.

Bob
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Old Mar 5, 2006 | 03:40 PM
  #43  
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firefighterhill Adam

What did you set you D-Spec's at?
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Old Mar 5, 2006 | 04:27 PM
  #44  
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Thanks for the tip im going to put it up on ramps tomorrow and re torque them. I have the front on 7 and the rear at 5
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Old Mar 5, 2006 | 06:14 PM
  #45  
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I have never bottomed out...mine right now are on 5 and 5. I just instaled my anti roll kit so I will play with it more. The sways made a real nice difference....this car handels so much better now!!!!!!!
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Old May 3, 2006 | 01:36 PM
  #46  
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seems like the dspecs are the way to go for shocks. i was thinking frpp handling package, but eibach/dspec might be the way to go
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Old May 3, 2006 | 02:14 PM
  #47  
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I saw someone post pics of there frpp pack and one of the parts for the rear swaybar had eibach stamped all over it. I would be willing to bet the two are pretty darn close.
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Old May 3, 2006 | 03:44 PM
  #48  
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<div class='quotetop'>QUOTE(NOLAGT @ May 3, 2006, 3:17 PM) Quoted post</div><div class='quotemain'>
I saw someone post pics of there frpp pack and one of the parts for the rear swaybar had eibach stamped all over it. I would be willing to bet the two are pretty darn close.
[/b][/quote]


Yep, I just got the FRPP sway bars and the rear brackets have Eibach stamped it them. Other than being blue rather than red, they look identical to the Eibach kit...but cheaper.
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Old May 3, 2006 | 03:56 PM
  #49  
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Are they cheaper? I never looked at price because I went with eibach because I used them in the past. I wonder about the frpp springs vs the prokit.
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Old May 4, 2006 | 08:27 AM
  #50  
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Not a lot cheaper. I didn't shop around much, but I ot the FRPP kit for $330 from john bleakly ford.
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Old May 21, 2006 | 10:04 PM
  #51  
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The ENTIRE FRPP Kit was 330.00?????????? Holy Cow!!!! That can't be right! Oh........I just noticed it said sway bars only. Sorry!
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Old May 22, 2006 | 01:02 PM
  #52  
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Originally Posted by SVTJackl
The ENTIRE FRPP Kit was 330.00?????????? Holy Cow!!!! That can't be right! Oh........I just noticed it said sway bars only. Sorry!
I was thinking the same as you, I paid $1130 for the complete FPRR kit. I really am enjoying it but no question the ride is stiff, but that's what I wanted. I wanted to feel the road and be able to take the turns alot faster which it accomplished.
Attached Thumbnails eibach pro kit...bumpy ride-p2210153.jpg  
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Old May 22, 2006 | 01:47 PM
  #53  
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Sorry, we were talking about just the sway bar kit.
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Old May 24, 2006 | 11:58 AM
  #54  
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I'm experiencing a clanking noise when going up driveways, going on the street, pot holes, etc... is that 'cause maybe something was not tighten far enough? why could that be? is it bottoming out? It started soon after the install (maybe a week). I expected bumpy, but not so noisy!

Any help is appreciated.
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Old May 24, 2006 | 05:39 PM
  #55  
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two things that i found with my frpp kit

(1) if a front sway link comes loose the sound transmits to the rear of the car
i had to have my wife drive me around wile i sat in the back seat with the rear seats folded down.with my upper body in the trunk, checking shock mounts ect. the noise was comeing from the front of the car. needless to say i found a loose front link.

(2) the rear greaseable sway bar bushings have to be regreased EVERY TIME IT RAINS.
the rain washes the grease out of the bushings and they squeek and creek like carzy!!!

other than that the ride is near stock and the cornering is way better!!


jay
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Old May 25, 2006 | 06:37 AM
  #56  
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Anybody with a clanking noise out of their eibach pro-kit? I'm gonna take it apart tomorrow and tighten it again, but I just wanted to know if someone else experienced this...
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Old May 25, 2006 | 09:18 AM
  #57  
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Jay, I too have had and currently doing it again. Last night took it back to the shop (this is the third time since installed) and had it tightened again. The mechanic showed me that the holes in the sway bar are bigger than the stock ones. I'm no engineer but I don't see how the clamping pressure of the nut is ever going to hold it for the long term. With the roads in California falling apart I think I'll being doing this evey 6 weeks or so. I called Ford Racing and they claim to have no knowledge of this being an issue. We mic'ed the strut link and sway bar holes. Strut link is approximately 12mm, the hole is 14mm I believe this needs to be a tighter fit in order to stay torqued. Any engineers out there that can add some thoughts?
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Old May 25, 2006 | 04:28 PM
  #58  
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Originally Posted by topconbob
Jay, I too have had and currently doing it again. Last night took it back to the shop (this is the third time since installed) and had it tightened again. The mechanic showed me that the holes in the sway bar are bigger than the stock ones. I'm no engineer but I don't see how the clamping pressure of the nut is ever going to hold it for the long term. With the roads in California falling apart I think I'll being doing this evey 6 weeks or so. I called Ford Racing and they claim to have no knowledge of this being an issue. We mic'ed the strut link and sway bar holes. Strut link is approximately 12mm, the hole is 14mm I believe this needs to be a tighter fit in order to stay torqued. Any engineers out there that can add some thoughts?
im not an engineer but i do have a 1/2 inch drive impact and i ran the nut down untill i thought it was going to break the stud! and it hasent come loose again yet

jay
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Old May 25, 2006 | 06:34 PM
  #59  
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Originally Posted by rony1976
Anybody with a clanking noise out of their eibach pro-kit? I'm gonna take it apart tomorrow and tighten it again, but I just wanted to know if someone else experienced this...
I did a few days after installing mine. It turned out it was the front swaybar link bolts. They felt tight, but I'd read that they could be a problem and retightening them got rid of the rattle/clunk going over bumps. In a few days, they started making noise again. Out came the impact wrench and a few good hits on each nut (that didn't sound right...) and they haven't loosened since.

The factory bolts are a style of locknut that is really only designed for a single installation--i.e. one torque cycle. Ford actually has a new style of locknut that is available (it's like a heavy duty nylock nut with a captive washer, instead of a stover style), but I haven't had a chance to run by the dealer and order a set. I probably will eventually just for peace of mind.
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Old May 26, 2006 | 08:16 AM
  #60  
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im not an engineer but i do have a 1/2 inch drive impact and i ran the nut down untill i thought it was going to break the stud! and it hasent come loose again yet

jay


Ford Racing called me back and told me that they have seen the problem now. Their recommendation is to replace the nuts and locktite them on even though they the nuts are nylocks. Just what Import-Slaya said in his response above. I'm tried of people asking me what's that clunking sound?
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