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Do new shocks/sturts/springs have a break-in period?

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Old 02-06-2012, 12:18 AM   #1
locotone07
 
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Default Do new shocks/sturts/springs have a break-in period?

Just swapped the stock suspension in my 2012 GT (non-Brembo) convertible for a set of BOSS springs (wanted minimal lowering but a little stiffer springs), a set of Koni sports and a set of adjustable UMI poly LCA's. The Konis all set at the softest setting but boy the ride feels a lot stiffer than I expected. Any thoughts or suggestions?
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Last edited by locotone07; 02-06-2012 at 12:20 AM.
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Old 02-06-2012, 02:05 AM   #2
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i can only imagine the boss spring rates are pretty track set .. the brembo spring rates ride harsh enough. you might have picked the wrong spring for your wants. the steeda sports are a pretty mild drop (around an inch) and ride pretty comfortably from what I've heard.
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Old 02-06-2012, 06:32 AM   #3
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i can only imagine the boss spring rates are pretty track set .. the brembo spring rates ride harsh enough. you might have picked the wrong spring for your wants. the steeda sports are a pretty mild drop (around an inch) and ride pretty comfortably from what I've heard.
I based my purchase on these spring rates:
http://brembo50.com/Default.aspx?pageId=1130035
and
http://www.steeda.com/forums/index.php?topic=2725.0
according to that info the rear spring on the Boss are 1 pound more while the front springs of the Steeda's are 77 pounds more....unless the numbers aren't correct...
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Old 02-06-2012, 08:35 AM   #4
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Quote:
Originally Posted by locotone07 View Post
Just swapped the stock suspension in my 2012 GT (non-Brembo) convertible for a set of BOSS springs (wanted minimal lowering but a little stiffer springs), a set of Koni sports and a set of adjustable UMI poly LCA's. The Konis all set at the softest setting but boy the ride feels a lot stiffer than I expected. Any thoughts or suggestions?
How often are you planning on taking your car to the track? That is a nice setup for auto-cross...

I will probably never auto-cross my car, so I went with Koni STR.Ts with my factory springs and the ride is about as firm as I would ever want for a DD.
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Old 02-06-2012, 12:49 PM   #5
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When I went from the Roush Stage 2 suspension to the Roush trak pak coilover kit my ride felt more harsh on the softest rebound setting. But its what I wanted for autox and road course HPDE use, so it was a trade off I accepted.
I'm sure there is some form of break in period but don't think it will be significant. I think you will have to make more of an adjustment to the new suspension rather than the other way around.
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Old 02-06-2012, 04:13 PM   #6
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How often are you planning on taking your car to the track? That is a nice setup for auto-cross...

I will probably never auto-cross my car, so I went with Koni STR.Ts with my factory springs and the ride is about as firm as I would ever want for a DD.
I'm not planning to tracking the car. Just wanted something a little firmer, the stock 'float' was killing me but now my stang has got the 'jitters'. I thought the Boss spring would have been just right as there not as firm as the Steedas and would produce less lowering...I'm waiting for the springs to settle before I take measurements to compare ride height but I can see the fronts are noticably lower than stock, not sure about the rears. I was told the STR.T's are made in Mexico (or at least some country other than Holland) while the Sports are actually made in Holland (not that that makes them any better, just my preference) and that the Sports are equivalent to the STR.Ts at their lowest setting...guess I choose incorrectly....I'll give these a go for a while. If anything I may go back to the stock springs...we'll see.
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Old 02-06-2012, 05:08 PM   #7
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I (and others) thought the OE Brembo rear springs were too stiff for the fronts, causing a hobby horse ride (uncomfortable). I switched to koni yellows and Steeda sports from Sam Strano, and now find the ride better than stock on full soft. Sam has somehow sourced straight rate springs, which I think makes all the difference. I do track my car, and comfort, after all, is in the a$$ of the beholder, so your results may vary.

I think ford has tried pretty hard to make the Boss 'balanced' in medium speed, neutral throttle corners. That means stiff rear springs, maybe too stiff. Try increasing the damping at the back to control the spring. I know it's counter intuitive, but the hobby horse sensation is not pleasant. Plus, it cost nothing.
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Old 02-06-2012, 09:50 PM   #8
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I (and others) thought the OE Brembo rear springs were too stiff for the fronts, causing a hobby horse ride (uncomfortable). I switched to koni yellows and Steeda sports from Sam Strano, and now find the ride better than stock on full soft. Sam has somehow sourced straight rate springs, which I think makes all the difference. I do track my car, and comfort, after all, is in the a$$ of the beholder, so your results may vary.

I think ford has tried pretty hard to make the Boss 'balanced' in medium speed, neutral throttle corners. That means stiff rear springs, maybe too stiff. Try increasing the damping at the back to control the spring. I know it's counter intuitive, but the hobby horse sensation is not pleasant. Plus, it cost nothing.
Funny, I've never read any complaints about the Brembo springs (even though I didn't have them). I give the shock adjustment a try...like you said it cost nothing. Thanks for the tip.
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Old 02-06-2012, 10:45 PM   #9
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I have the brembo springs and I cannot stand how the car rides. it feels like there is very little dampening. I have several friends and family members that have pointed out how rough the ride is :/. I am trading out for steeda sport + koni str. t's soon since I planned on lowering it regardless.
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Old 02-07-2012, 08:04 AM   #10
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I was going to ask the same thing re. will the stock Brembo pkg suspension 'settle' due to what I see as a very '4wd' stance on my car. I guess I will add the Steeda springs to my Koni yellow mod plans and run it in the SCCA Solo Street Touring class which permits spring changes.

Thanks to the thread starter for bringing this up.
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Old 02-07-2012, 12:25 PM   #11
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Let's see if I can help any here.

All Brembo cars sit high. They all use a higher rate rear spring than front (which is backwards). The suspension frequency of the stock springs is whacked out which causes a lot of the hobby-horse thing. Also I don't particularly get a sense of trust from the rear of the car either. Boss springs are more of the same, just stiffer.

Depending on what you are going for, there are a few ways of getting things in order... Even running a stock GT rear springs instead to better match the fronts. This is if you want the softest ride and the better frequencies. I'm not saying it's ideal, but team stock springs up with some killer shocks and you'd be surprised.

FWIW, to the OP.... My guess is that you really didn't want "stiffer springs" in a general sense, so much as better control (shocks/struts) and maybe a better front to rear match (stiffer front, or softer rear). The Boss springs didn't do that for you.

Now, most prefer the look of a little lower car, which stock Ford springs won't give you. If you pick a good proper set of springs, you'll get the stiffer front rate, that becomes more in line with the rear (some rears are not much stiffer at all than the Brembo rears, and less stiff than the Boss rear).
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Old 02-07-2012, 05:19 PM   #12
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Quote:
Originally Posted by Sam Strano View Post
FWIW, to the OP.... My guess is that you really didn't want "stiffer springs" in a general sense, so much as better control (shocks/struts) and maybe a better front to rear match (stiffer front, or softer rear). The Boss springs didn't do that for you.
Sam, is there a better matched spring set up that won't lower my ride height? I was actually fine with the stock height (not sure how my vert sits vs a Brembo suspension) but I thought it looked fine. If not what would lower it the least or should I just got back to my stock springs?
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Old 02-07-2012, 05:29 PM   #13
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How about you put your stock rear springs back in with the Boss fronts? This is always the catch, and why I want to talk to folks before they do stuff like this. I'm pretty sure had this been discussed, I'd have not sold you springs at all. Hard to know for sure, this is based on what I see and what I know, and what it seems you wanted.

And Koni's are great, but folks often screw things up if they don't understand how they work and what happens with changes. In the end you do what you like best, but some guidance helps get you there, and I work with my customers to make sure they get it. That's just a reminder for those looking and saying "but e-bay is $5 less".
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Old 02-07-2012, 05:37 PM   #14
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How about you put your stock rear springs back in with the Boss fronts? This is always the catch, and why I want to talk to folks before they do stuff like this. I'm pretty sure had this been discussed, I'd have not sold you springs at all. Hard to know for sure, this is based on what I see and what I know, and what it seems you wanted.

And Koni's are great, but folks often screw things up if they don't understand how they work and what happens with changes. In the end you do what you like best, but some guidance helps get you there, and I work with my customers to make sure they get it. That's just a reminder for those looking and saying "but e-bay is $5 less".
Sam, as always you are da man! Thanks for the advice...any idea what the spring rates are for my stock rear springs (non-Brembo vert GT)?
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Old 02-07-2012, 05:37 PM
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