Been running Eibach Sportlines with factory struts...need help. - The Mustang Source - Ford Mustang Forums

Go Back   > > > >

GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Been running Eibach Sportlines with factory struts...need help.

Reply
 
 
 
Thread Tools Search this Thread
Old 12/30/08, 10:41 AM   #1
Mach 1 Member
Thread Starter
 
holeshot's Avatar
 
Join Date: May 12, 2004
Location: Indiana
Posts: 582
Thanks: 0
Thanked 0 Times in 0 Posts
Been running Eibach Sportlines with factory struts...need help.

I have had the Sportline springs on for about 8 months now, and I am pretty sure my struts are shot because it rides even harder than before. It actually hurts my back sometimes and my car is starting to creak and make noises when I hit bumps.

Any recomendations as far as replacement struts that will give me a less forgiving ride? If I keep driving like this I will rattle the car apart...including my body. I love the low look the sportlines give, but I want a combination that will make the car ride like a car, not a log wagon.

Thanks!
holeshot is offline   Reply With Quote
Join The Mustang Source

Join TheMustangSource.com Today - It's Totally Free!

Are you a Ford Mustang fan? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Ford Mustang Fans to meet online.
Once you join you'll be able to post messages, upload pictures of your stang, and have a great time with other Ford Mustang fans. Whether your an old timer or just bought your Mustang you'll find that TheMustangSource.com is a great community to join. Best of all it's totally free!

Join TheMustangSource.com Today! - Click Here JOIN FOR FREE


Old 12/30/08, 11:05 AM   #2
Mach 1 Member
 
sam strano's Avatar
 
Join Date: October 28, 2008
Location: Brookville, PA
Posts: 623
Thanks: 0
Thanked 0 Times in 0 Posts
And this is common. As the dampers wear, ride degrades it does not improve. You'll likely get other opinions here, but mine is as follows:

Any damper you put on that's better than what you have (even new stock shocks that don't have miles on them) will make the car better. The trick is for how long, and how much better? Costs tend to lead folks to do cheaper replacement shocks that often aren't the best for lowering springs anyway. Lower and stiffer both demand more damping control from the shock. If you don't have it, you're starting out borderline and while better, it's only downhill from there.

I think you have 3 workable choices. Tokico HP's, Tokico D-Specs, Koni's. Tokico HP's are a bit better than stock, but not adjustable to tune the ride in (and softer isn't always better ride, your shocks have softened with age and it's riding worse). The D-specs give you adjustment, and frankly are what I'd consider the bare minimum. They are cheaper than Koni's because they aren't build as well and aren't quite as good overall IMHO (and I have run both personally). The Koni's are by far the best choice as far as I'm concerned. Great quality and control, and a real warranty should you ever need it.

In the end you truly do get what you pay for with dampers. They are not as simple as they appear to be on the outside....
sam strano is offline   Reply With Quote
Old 12/30/08, 12:27 PM   #3
Mach 1 Member
Thread Starter
 
holeshot's Avatar
 
Join Date: May 12, 2004
Location: Indiana
Posts: 582
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks Sam.

Are all of the choices you mentioned tuned for the sportline springs??
holeshot is offline   Reply With Quote
Old 12/30/08, 03:20 PM   #4
Mach 1 Member
 
ov3n's Avatar
 
Join Date: January 29, 2004
Location: Milwaukee, WI
Posts: 832
Thanks: 0
Thanked 0 Times in 0 Posts
At the suggestion of TillmanSpeed, I purchased a set of Steeda ProAction shocks/struts and have been pleased with them. I basically wanted something more durable than the stockers, yet less expensive than the Tokico adjustables. Been installed on my car with Eibach SportLines for almost a year and I've been happy with them.
ov3n is offline   Reply With Quote
Old 12/30/08, 03:31 PM   #5
Mach 1 Member
 
sam strano's Avatar
 
Join Date: October 28, 2008
Location: Brookville, PA
Posts: 623
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by holeshot View Post
Thanks Sam.

Are all of the choices you mentioned tuned for the sportline springs??
Either of the adjustable shocks have plenty of range to deal with lowering springs. As for non-adjustables, frankly the Tokico's are a better value as far as I'm concerned than the Steeda Pro-actions.... but I'd not run either myself. I know just how much damping changes can effect a car for the better and wouldn't run a non-adjustable shock that just can't be right for every person, every car, or every spring.
sam strano is offline   Reply With Quote
Old 12/30/08, 03:36 PM   #6
Mach 1 Member
 
polodinks's Avatar
 
Join Date: August 16, 2007
Location: Tallahassee, FL
Posts: 550
Thanks: 0
Thanked 0 Times in 0 Posts
im running eibach sportlines aswell for about the same time as you and yes my car creeks/tics a lil bit while like turning into a parking spot or pulling into a driveway...... i would say yes the shocks are done i will upgrade mines soon but the stiff ride doesnt bother me at all
polodinks is offline   Reply With Quote
Old 12/30/08, 03:51 PM   #7
Mach 1 Member
Thread Starter
 
holeshot's Avatar
 
Join Date: May 12, 2004
Location: Indiana
Posts: 582
Thanks: 0
Thanked 0 Times in 0 Posts
I checked and my car is acutally sitting on the bumpstops. That tells me that the springs dropped it waaaay too much in the rear, so I doubt that replacing the struts/shocks would even matter?? I think its time to put the stock springs back on. I cant handle the rough ride anymore.
holeshot is offline   Reply With Quote
Old 12/30/08, 04:41 PM   #8
Mach 1 Member
 
sam strano's Avatar
 
Join Date: October 28, 2008
Location: Brookville, PA
Posts: 623
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by holeshot View Post
I checked and my car is acutally sitting on the bumpstops. That tells me that the springs dropped it waaaay too much in the rear, so I doubt that replacing the struts/shocks would even matter?? I think its time to put the stock springs back on. I cant handle the rough ride anymore.

It'll matter... Those springs are short and you've been very near to, if not on the stops all along. I'm sure you'd have noticed any tangible change in ride height, so it hasn't changed much. And the ride has degraded over time, which is the wear on the dampers.

Don't get me wrong, I don't think Sportlines are the best springs out there. I do think they are too low, but the worsening ride quality is from the dampers just being more and more overwhelmed. If you were to put stock springs, or any taller spring on things would improve as the dampers would have a better chance to do their job. But they've never been great, and they will continue to get worse. If you didn't hate the ride when you first put your Sportlines on, good dampers will get it back to that, and a little better yet.
sam strano is offline   Reply With Quote
Old 12/31/08, 09:24 AM   #9
Cobra R Member
 
Rebel73's Avatar
 
Join Date: April 22, 2005
Location: Lost Angels
Posts: 1,898
Thanks: 0
Thanked 0 Times in 0 Posts
Can either of you guys post a pic of your rides? I'd like to see just how slammed the car gets with the Sportlines. My car feels low as it is with the Pro's.
Rebel73 is offline   Reply With Quote
Old 12/31/08, 10:10 AM   #10
Mach 1 Member
 
polodinks's Avatar
 
Join Date: August 16, 2007
Location: Tallahassee, FL
Posts: 550
Thanks: 0
Thanked 0 Times in 0 Posts
heres a couple pics with 18's and 20's

they were on for about 20 minutes i barely fit my finger under there





Heres the 20's



i hit my bump stop a couple times it rattles me up sometimes but i like the way the ride feels low and hard
polodinks is offline   Reply With Quote
Old 12/31/08, 10:23 AM   #11
Cobra R Member
 
Rebel73's Avatar
 
Join Date: April 22, 2005
Location: Lost Angels
Posts: 1,898
Thanks: 0
Thanked 0 Times in 0 Posts
Wow, that does look nice. I'd be scared to scoop up all the roadkill though, cause my CS bumper is already 1.5 inches lower than a standard GT!
Rebel73 is offline   Reply With Quote
Old 12/31/08, 10:30 AM   #12
Post *****
 
Glenn's Avatar
 
Join Date: August 7, 2006
Location: Lockport il
Posts: 13,608
Thanks: 0
Thanked 2 Times in 2 Posts
the hp's are working well for me, Just under 300 bucks for the set.
Glenn is offline   Reply With Quote
Old 12/31/08, 03:29 PM   #13
GT Member
 
Join Date: March 25, 2007
Posts: 137
Thanks: 0
Thanked 0 Times in 0 Posts
You need to cut the bump stops. Spend the extra and get adjustable. I have Steeda comp springs and D-Specs. If I had to do over, I'd go coil-over. It would have cost me $800 more, but think of the possibilities...
WayneA is offline   Reply With Quote
Old 12/31/08, 03:55 PM   #14
Mach 1 Member
 
sam strano's Avatar
 
Join Date: October 28, 2008
Location: Brookville, PA
Posts: 623
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by WayneA View Post
You need to cut the bump stops. Spend the extra and get adjustable. I have Steeda comp springs and D-Specs. If I had to do over, I'd go coil-over. It would have cost me $800 more, but think of the possibilities...
I have to respectfully disagree. While cutting the stops makes for a bit more travel before you touch them, when you do the spike in wheel rate is even more abrupt. The bumpstops are not solid and gain rate as you compress them (notice the accordion type shape). Cutting them takes away a lot of the rising rate, and effectively leaves you with still little travel.

A longer softer stop is less intrusive than a shorter, more abrupt bumpstop which is why so many cars are now using them as rising rate supplemental springs vs. a true bump*stop*.

As for the coil-overs, I'm not sure what you are looking to gain from them vs. what you have. There is no magic on a coil-over. Low is still low. Sure you can set the height exactly where you want it, but if you set it up @ height like a given set of springs you haven't done anything helpful for the travel or geometry vs. a normal set of springs. And that doesn't even get into the various types of dampers associated with coil-overs or the spring rates they might be using.
sam strano is offline   Reply With Quote
Old 12/31/08, 05:28 PM   #15
GT Member
 
Join Date: March 25, 2007
Posts: 137
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by sam strano View Post
I have to respectfully disagree. While cutting the stops makes for a bit more travel before you touch them, when you do the spike in wheel rate is even more abrupt. The bumpstops are not solid and gain rate as you compress them (notice the accordion type shape). Cutting them takes away a lot of the rising rate, and effectively leaves you with still little travel.

A longer softer stop is less intrusive than a shorter, more abrupt bumpstop which is why so many cars are now using them as rising rate supplemental springs vs. a true bump*stop*.

As for the coil-overs, I'm not sure what you are looking to gain from them vs. what you have. There is no magic on a coil-over. Low is still low. Sure you can set the height exactly where you want it, but if you set it up @ height like a given set of springs you haven't done anything helpful for the travel or geometry vs. a normal set of springs. And that doesn't even get into the various types of dampers associated with coil-overs or the spring rates they might be using.
Everyone would love a new set of progressive stops for a spring that drops the rear 2“. I’m not aware of any. I even remember Roush and Saleen stating you need to cut the stops, right where the accordion part starts, ˝ inch off the top, not too much. The Sportline is an extreme “lowering” spring that reduces suspension travel by 2”, the stock stops were not meant for that spring. I’m not saying it’s a good thing to cut them, but if you want the drop you need to cut.

I would have liked coil-overs for corner weighting, not dropping the car. Just as well, I would have had to go out and by a set of scales.

WayneA is offline   Reply With Quote
Old 1/1/09, 04:41 PM   #16
Mach 1 Member
 
ov3n's Avatar
 
Join Date: January 29, 2004
Location: Milwaukee, WI
Posts: 832
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Rebel73 View Post
Can either of you guys post a pic of your rides? I'd like to see just how slammed the car gets with the Sportlines. My car feels low as it is with the Pro's.






ov3n is offline   Reply With Quote
Old 1/2/09, 12:02 AM   #17
Bullitt Member
 
MooStang05gt's Avatar
 
Join Date: January 26, 2006
Posts: 211
Thanks: 0
Thanked 0 Times in 0 Posts
Ground Control Coilover Conversion Kit with Eibach 2 1/2" ID Sportline Springs and FRPP Stg 3 dampers.

Bobby M.
Attached Thumbnails
Been running Eibach Sportlines with factory struts...need help.-13bmck_moostang_2210349a.jpg   Been running Eibach Sportlines with factory struts...need help.-15bmck_moostang_ss2210356.jpg   Been running Eibach Sportlines with factory struts...need help.-16bmck_moostang_347.jpg   Been running Eibach Sportlines with factory struts...need help.-11mck_moostang_08.jpg  
Attached Images
 
MooStang05gt is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2013 Mustang Wire diagram book Earlsays For Sale and Wanted 2 9/17/15 10:02 AM
Legendary Hurst shifters - up to $50 rebate carid Vendor Showcase 1 9/15/15 09:37 AM
GT Prem with GT350 stickers? scott6809 2010-2014 Mustang 25 9/12/15 11:44 PM
2011 ford mustang gt pcm codes haitham 2010-2014 Mustang 4 9/8/15 12:52 PM
Beat up on some other vehicles at the track (video) Cdvision 2010-2014 Mustang 6 9/5/15 05:22 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 11:20 PM.


© 2010, The Mustang Source