Lowered SRX
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Cadillac SRX First Generation Forum - 2004 - 2009 Discussion, Lowered SRX in Cadillac SRX Forums; caddy stock.jpg low caddy1.jpg low caddy2.jpg As you can see from the before picture, my '06 AWD N* MRC always ...
  1. #1
    OrangeStang is offline Cadillac Owners Member
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    Lowered SRX

    caddy stock.jpg
    low caddy1.jpg
    low caddy2.jpg

    As you can see from the before picture, my '06 AWD N* MRC always sat nose high and I hated the look of it. I was doing some service work on it, and decided to cut one coil out of the front springs. The 2nd and third pics are the result. I'm pretty happy with it. It still rides nicely, and looks vastly better IMO.

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  3. #2
    repnatl is offline Cadillac Owners Enthusiast
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    Looks good man thought about dropping my 06 awd non mrc

  4. #3
    1BadCadSTS's Avatar
    1BadCadSTS is offline Cadillac Owners Connoisseur
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    And you've discovered a new way to blow out your very expensive mrc shocks faster. Congrats!

  5. #4
    Whiplash_89's Avatar
    Whiplash_89 is offline Cadillac Owners Fanatic
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    Re: Lowered SRX

    Ye bad idea.

  6. #5
    conedoctor is offline Cadillac Owners Connoisseur
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    Re: Lowered SRX

    How will that blow out the shock?

  7. #6
    OrangeStang is offline Cadillac Owners Member
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    Re: Lowered SRX

    I realize the spring rate will be incrementally firmer, and that the strut piston will be about 1" further into strut body (considering the 1.5" drop and that the strut is inset somewhat from the face of the wheel mounting face), but it appears there is still good range of motion of the strut and that it isn't far from its original spec.

    We'll see how the MRC struts deal with it.

  8. #7
    conedoctor is offline Cadillac Owners Connoisseur
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    Re: Lowered SRX

    You did not change the spring rate by cutting the length, you changed the length.

    Is the spring progressive or are the coils spaced the same the whole spring?

  9. #8
    Whiplash_89's Avatar
    Whiplash_89 is offline Cadillac Owners Fanatic
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    Re: Lowered SRX

    The geometry changed. There is more stress on the shock now.

  10. #9
    conedoctor is offline Cadillac Owners Connoisseur
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    Re: Lowered SRX

    Quote Originally Posted by Whiplash_89 View Post
    The geometry changed. There is more stress on the shock now.
    How is the shock stressed and why?

  11. #10
    Whiplash_89's Avatar
    Whiplash_89 is offline Cadillac Owners Fanatic
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    Re: Lowered SRX

    The suspension travel is reduced, its closer to maxing out. Cutting the spring changes the spring rate, it could still be within tolerance but I wouldn't do it on a 4400Lb vehicle...

  12. #11
    conedoctor is offline Cadillac Owners Connoisseur
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    Re: Lowered SRX

    I don't agree so lets talk.

    How can you change the rate of a spring by cutting it?

    Ok so the car is lower now yes but how is that going to stress the shock, if it were to "max out" the bump stop would be hit long before the shock bottoms out, does the shock see more stress being lower in the travel, the rate of movement has not changed.

    I'm not being lippy at all either I just like facts, your not giving me any.

  13. #12
    Strings10's Avatar
    Strings10 is offline Cadillac Owners Member
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    Re: Lowered SRX

    Hi 1st post!

    I have to chime in.
    I am a mechanical engineer so I know about springs.
    This applies to a uniform wound spring.
    If you cut cut coils out of a spring, you do (2) things
    (1) you decrease the travel of the spring before it becomes a solid (bottoms out)
    (2) you increase the force that the spring will generate (the spring rate)

    The above is only true if you do not lengthen the spring back to its original length (by stretching coils)
    If you stretch the spring back to its original length by stretching coils, the opposite of (1) and (2) will occur.

    Ideally a spring functions best when you keep the overall travel of the spring to less than 30% of its total length.

    2007 SRX V6

  14. #13
    conedoctor is offline Cadillac Owners Connoisseur
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    Re: Lowered SRX

    Ok fair enough, we have increased the rate of the spring, by how much we don't know.

    So now then lets decide if this will cause a failure of the shock.

  15. #14
    SFVetteman's Avatar
    SFVetteman is offline Cadillac Owners Fanatic
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    Re: Lowered SRX

    The SRX has a tapered coil spring so I'm not sure if it qualifies as a uniformly wound coil spring. However, since the OP says "it still rides nicely" whatever changes in spring rate that might have occurred appear to be minimal. I would agree with Whiplash that the suspension geometry has changed but I'm with Cone in that I can't see how any more stress would be placed on the shock. The change in geometry will likely change the camber a bit and possibly the caster, so I would have that checked to see if it is still within spec.

    Bill

  16. #15
    conedoctor is offline Cadillac Owners Connoisseur
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    Re: Lowered SRX

    Toe and camber will be out.

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