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Coil over replacement shocks

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Old Oct 1, 2014 | 12:39 PM
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Default Coil over replacement shocks

So, after about 50K miles I believe that my rear Pfadt coil overs are ready for new/rebuilt shocks.
On the other hand, maybe it's time to move up to a more tune-able c/o rear shock setup.
....any help in this area will be appreciated

2007 Z06....70K miles.
PS: Adam P., if you are out there, how about a PM?
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Old Oct 2, 2014 | 12:57 AM
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Originally Posted by scootguy58
So, after about 50K miles I believe that my rear Pfadt coil overs are ready for new/rebuilt shocks.
On the other hand, maybe it's time to move up to a more tune-able c/o rear shock setup.
....any help in this area will be appreciated

2007 Z06....70K miles.
PS: Adam P., if you are out there, how about a PM?
To have the shocks rebuilt,
REsuspension.com, ask for Jason or Dennis
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Old Oct 2, 2014 | 11:12 AM
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On a somewhat related note…Is it normal for coilovers to only last about 50k miles before needing to be replaced/rebuilt? I have had cars with almost double that in miles running stock shocks with no issues.
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Old Oct 2, 2014 | 01:06 PM
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Late Model Racecraft has a really nice set of custom valved (for each specific setup) coil overs for c5/c6 corvettes. Id give Rob over there a call.
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Old Oct 2, 2014 | 02:45 PM
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Originally Posted by Homer3D
On a somewhat related note…Is it normal for coilovers to only last about 50k miles before needing to be replaced/rebuilt? I have had cars with almost double that in miles running stock shocks with no issues.
Little more specifics please, such as have not changed in High/Low dampering/rebound speeds over the 100K+ miles, or more just a general statement before they completely failed all together instead.

Hence, if you tested your 50K miles shocks against a brand new shock of the same kind, will have found that they in fact has changed in settings.
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Old Oct 2, 2014 | 04:38 PM
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Originally Posted by Dano523
Little more specifics please, such as have not changed in High/Low dampering/rebound speeds over the 100K+ miles, or more just a general statement before they completely failed all together instead.

Hence, if you tested your 50K miles shocks against a brand new shock of the same kind, will have found that they in fact has changed in settings.
It was more of a general statement regarding total failure and needing replacement. I understand that a shock with 50k miles on them would show some degradation in performance when comparing them to a brand new shock, but I am not sure I would considered it a “failed” shock requiring replacement at that time. I could be wrong. Maybe shocks do only have a lifespan of 50k miles or so and the decrease in performance over the years is so gradual that I just don’t notice until I actually replace them.

But I don’t want to take this too far off topic. I was just trying to get a better understanding.
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Old Oct 3, 2014 | 11:31 AM
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Originally Posted by Homer3D
It was more of a general statement regarding total failure and needing replacement. I understand that a shock with 50k miles on them would show some degradation in performance when comparing them to a brand new shock, but I am not sure I would considered it a “failed” shock requiring replacement at that time. I could be wrong. Maybe shocks do only have a lifespan of 50k miles or so and the decrease in performance over the years is so gradual that I just don’t notice until I actually replace them.

But I don’t want to take this too far off topic. I was just trying to get a better understanding.
Let me get back in here a bit. I noticed this season, that the damping has pretty much given up the ghost on the kinds of bumps and jolts that would normally not allow the suspension to crash the stops...meaning being on the same roads as always and taking more suspension -to-frame hits than normal.
In the "olden days", one would change out a set of shocks after 20-25 thousand miles for the same reason, which was degradation in the response. The fix would be a set of Konis or Bilsteins. I know that there have been advancements in systems for the Z since the Pfadts went in six years ago. I just want to go in the right direction and decide whether to repair or start over with something more "modern"
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Old Oct 3, 2014 | 05:08 PM
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At 50K, you coils have lost some of their tension (become weaker).

If you are trying to get back to how it was set up new, then new coils will be need to installed as well as the shocks needing to be rebuilt.

Hence only half of the battle is shocks, the other is getting the right spring (tensions) in place to begin with, even before you set 4 corner balance/ride height.
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Old Oct 10, 2014 | 10:10 AM
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Originally Posted by Dano523
At 50K, you coils have lost some of their tension (become weaker).

If you are trying to get back to how it was set up new, then new coils will be need to installed as well as the shocks needing to be rebuilt.

Hence only half of the battle is shocks, the other is getting the right spring (tensions) in place to begin with, even before you set 4 corner balance/ride height.
So what we are saying is, that it may be time for the switch to a newer and more advanced c/o design, i.e., a bit more $$ for some improved technology.
...last year, new heads, this year new suspension......
still cheaper than a new one....although they are looking pretty spiffy!
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Old Oct 10, 2014 | 10:44 AM
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One of my Pfadt coilovers broke with 11K on them. Good luck if they need anymore than a rebuild. I said screw it and bought new ones from LG.

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