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Bowed / Bent Coil Spring

Discussion in 'Suspension' started by tacovsburrito, Sep 16, 2024.

  1. Sep 16, 2024 at 8:17 PM
    #1
    tacovsburrito

    tacovsburrito [OP] Member

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    About a year ago I installed 5100s with wheelers T1 springs. Recently started hearing more tire rub on the passenger side and noticed the passenger lift was lower than the left side. Taking a closer look, I saw that the coil spring is bowed/bent on the passenger. How bad is this and any ideas of how to diagnose?

    Here are a few notes:
    - I installed using the floor jack method to compress the springs. I recall needing to give a bit of force to guide the shock into the top hat as I was lifting the LCA to compress the shock. So there was some element of the shock that was not perfectly aligned to begin.
    - The bottom end of the spring is maybe 2mm from the end of the perch where it would ideally be seated. See the photo - and I'm comparing this to the driver side, which looks right at the end of the perch depression.
    - The passenger side (the bent one) was installed 1 setting lower on the 5100s to account for the taco lean.

    I'm not sure how serious this is and whether it can easily be fixed by me. I also noticed this thread https://www.tacomaworld.com/threads/do-these-wheelers-assembled-shocks-look-normal.796642/ which mentions aligning 2 top hat bolts with the direction of the lower bushing - which i didn't pay attention to - im pretty sure compressing the coils on the vehicle skips this part since the top hat is already installed and the bottom of the shock is already bolted in. Or did I miss this?

    UPDATE/CONCLUSION - BOWED COIL SPRING IS A BAD SIGN.
    We took it apart yesterday and fixed it. Here's what happened. The snap ring failed, but it wasn't totally catastrophic. With the shock off the truck, loaded spring still attached, I looked up under the perch and saw that the snap ring was not even level or seated in the groove, and at that moment I feared for my life for a second since my face was in the line of fire. The snap ring had come out and was sitting diaginally/twisted, but the perch was somehow still holding it - maybe only a 1/2 inch below the lowest height setting where it was originally set. So i had been driving around for a month or so with the snap ring sitting on nothing but compression force and the bilstein stickers on the shock body. I'm guessing that the compression of the perch and the diagonal nature of how the snap spring stopped meant that the perch was also forced by the spring to go slightly off parallel with the shock, and caused the spring to bowing, while maybe also helping hold the force of the spring in place so it didnt completely blow off catastrophically.

    Lesson learned and luckily nobody hurt and no seriuous damage. Ultimately, you can tally one more screw up as a result of installing 5100s with the perch upside down. Why? When i first did the install, I had the perch upside down, when the weight of the truck was not enough to compress the spring into the shock mount. I lifted half the car into the air and I was confused until I realized it was upside down - this was even after reading all the accounts of upside down perches. Of course, I fixed the perch orientation, but I believe that force was enough to damage the snap ring so that a year later it failed on a relative average bump. Crazy that perch + unseated snap ring still held after it came unseated from the groove.
     
    Last edited: Sep 18, 2024
  2. Sep 17, 2024 at 9:58 AM
    #2
    JFriday1

    JFriday1 Well-Known Member

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    What does the top look like? is it centered with the top hat? Might be able to take a beefy pry bar and shift back over if its not centered on top.
     
  3. Sep 17, 2024 at 10:30 AM
    #3
    tacovsburrito

    tacovsburrito [OP] Member

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    Are you referring to how the spring sits at the top? Or the shock? The spring looks roughly centered but it actually it looks like the shock might be slightly right (towards the front of the truck), while the spring bows out left (bottom picture).


    Screenshot 2024-09-17 102007.jpg

    Screenshot 2024-09-17 102237.jpg
     
  4. Sep 17, 2024 at 10:42 AM
    #4
    bkhlrTaco's

    bkhlrTaco's “expletive deleted”

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    It "looks" like the spring isn't seated right at the top.??

    Screenshot 2024-09-17 102007.jpg

    Screenshot_20240917_124427_Gallery.jpg
     
  5. Sep 18, 2024 at 10:26 AM
    #5
    tacovsburrito

    tacovsburrito [OP] Member

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    Thanks for the helpful suggestions guys. I resolved the issue and updated in the first post.
     
    JFriday1 and bkhlrTaco's like this.

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