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Thread: Torsion Bar vs Sway Bar

  1. #1
    Senior Member Pandemonium's Avatar
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    Torsion Bar vs Sway Bar

    Can anyone care to explain to me the difference?

    From what I've read, some say they both do the
    same job. Others say, the Torsion is just a brace
    to stiffen the rear suspension while the Sway Bar
    is a "spring steel bar" that bends and straightens
    out after an impact.

    People have been saying different things but
    no straight credible answer. So which one is it?

    Sorry, I'm a huge noob and still learning :P
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  3. #2
    Senior Member Bowie's Avatar
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    I'd like to know as well and rather than making a separate thread, I hope you don't mind if I piggyback and ask; is the "bump steer" people talk about the thing that happens when you are taking a wide turn at speed, and the cracks in the road cause the car to "hop" in a crooked, scary way? I read that a torsion bar corrects that and if so, I need one.

  4. #3
    Senior Member Pandemonium's Avatar
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    "Torsion bars are mounted solid to the chassis on one end and to a suspension
    component on the other end. They are designed to support weight.
    A sway bar
    mounts both ends to suspension components and the center to the chassis.
    They are designed to control body roll and do not support weight. "
    - Anonymous poster @ ChevyTalk.org

    "A torsion bar is a type of suspension system that takes the place of a spring.
    The upper and/or lower control arms on the front of a vehicle are attached to
    a bar at the pivot point. This bar runs lengthwise alongside the frame
    (inside or outside) and is firmly attached at an anchor point at the other end.
    When your wheels move up and down with the contours of the ground the
    arms move up and down and twist the torsion bar. The torsion bar resists it
    and keeps the wheel planted on the ground.


    A sway bar is a different animal preventing the car from swaying by acting one
    wheel on one side against the other. I didn't get into too much detail on the
    sway bar because you claimed you know how they work."
    - mad57fireman @ ChevyTalk.org

    Research done.
    Case closed lol


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  6. #4
    Senior Member JGunz18's Avatar
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    The rear bar under the car is the rear torsion bar & the front bar going from strut to strut is the Sway bar/ strut bar. I'm installing both this weekend. I'll post pics



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  7. #5
    Super Moderator RPW00Mirage's Avatar
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    almost... the front bar underneath going from strut to strut attached with endlinks is a sway bar. the STRUT bar goes on top of the strut in the engine bay.
    2012 Boston Red Veloster NA Base Manual BTRcc tuned 167whp / 138wtq SOLD!
    TK.COM CAI/catback - Nameless poly motor mount - BTRcc 89 octane tune

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    K&N panel filter - Nameless poly motor mount - Curt hitch - CF filler cap
    Hawk ceramic pads - PMS torsion bar - UNIQ front strut bar

    2001 Emerald Green Metallic Kia Rio Manual
    Overhauled suspension - H&R springs - 1Gb control arms / torsion rods

    A6D 1.6L DOHC swap complete! - new hubs/knuckles/brakes next.

  8. #6
    Senior Member JGunz18's Avatar
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    That's not what I said? Going from strut to strut on top of the motor is the strut bar.

    Rear TorsionTorsion Bar vs Sway Bar-torsion.jpg

    Strut Torsion Bar vs Sway Bar-strut.jpg



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  9. #7
    Super Moderator RPW00Mirage's Avatar
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    you said sway bar/strut bar...


    and your photos are wrong, the top photo is a sway bar not a torsion bar.
    2012 Boston Red Veloster NA Base Manual BTRcc tuned 167whp / 138wtq SOLD!
    TK.COM CAI/catback - Nameless poly motor mount - BTRcc 89 octane tune

    2014 Vitamin-C Veloster Turbo Base Manual
    K&N panel filter - Nameless poly motor mount - Curt hitch - CF filler cap
    Hawk ceramic pads - PMS torsion bar - UNIQ front strut bar

    2001 Emerald Green Metallic Kia Rio Manual
    Overhauled suspension - H&R springs - 1Gb control arms / torsion rods

    A6D 1.6L DOHC swap complete! - new hubs/knuckles/brakes next.

  10. #8
    Senior Member JGunz18's Avatar
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    Ah ha! Your right! I thought the top was considered the Rear torsion. The rear torsion is slightly different. Here's the rear torsion

    Torsion Bar vs Sway Bar-torsion2.jpg



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  11. #9
    Senior Member hornytoad's Avatar
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    Quote Originally Posted by ajcc323 View Post
    "Torsion bars are mounted solid to the chassis on one end and to a suspension
    component on the other end. They are designed to support weight.
    A sway bar
    mounts both ends to suspension components and the center to the chassis.
    They are designed to control body roll and do not support weight. "
    - Anonymous poster @ ChevyTalk.org

    "A torsion bar is a type of suspension system that takes the place of a spring.
    The upper and/or lower control arms on the front of a vehicle are attached to
    a bar at the pivot point. This bar runs lengthwise alongside the frame
    (inside or outside) and is firmly attached at an anchor point at the other end.
    When your wheels move up and down with the contours of the ground the
    arms move up and down and twist the torsion bar. The torsion bar resists it
    and keeps the wheel planted on the ground.


    A sway bar is a different animal preventing the car from swaying by acting one
    wheel on one side against the other. I didn't get into too much detail on the
    sway bar because you claimed you know how they work."
    - mad57fireman @ ChevyTalk.org

    Research done.
    Case closed lol


    had to bump this up because the info is not correct as far as the veloster goes. that torsion bar set up is mostly used on trucks nowadays. it's designed to replace the coil springs. this is what they are talking about on chevytalk.


    it's different than what we are talking about here. from what I can see, as far as the veloster goes, they both do the same job, which is to stiffen the rear suspension on our car. I think the confusion arises because the some term "torsion bar" means different things depending on which vehicle you are talking about.

    here's a torsion bar for the V:


    here's the sway bar:
    2012 Boston Red Veloster 138 HP 123 Ft Lbs torque
    Just enough torque to tighten the wheel nuts on a truck

  12. #10
    Senior Member Pandemonium's Avatar
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    This is why I had to ask the folks in this forum.
    I'm getting the wrong information from outside
    sources :C
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  13. #11
    Senior Member JGunz18's Avatar
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    Here are mine!!! Front strut bar & rear SWAY bar. (Funny thing is I just asked Jim from Pierce & he said what I have is the rear torsion bar) Go figure!

    Wow they have improved the handling & steering BIG TIME!!!! All I need now is some Koni Yellows

    Torsion Bar vs Sway Bar-pierce.jpg
    Torsion Bar vs Sway Bar-pierce3.jpg
    Torsion Bar vs Sway Bar-pierce4.jpg



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  14. #12
    Senior Member Bowie's Avatar
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    I just got the whiteline "torsion bar" (same thing as the Pierce rear torsion) and it's what people traditionally refer to as a sway bar. I'm guessing there's something different about the V's suspension that causes it to be referred to as torsion instead of sway.

  15. #13
    Senior Member JGunz18's Avatar
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    Yeah I guess so. One of the best mods that I've done to the car. I have zero sway now with my drop & both bars



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  16. #14
    Senior Member Pandemonium's Avatar
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    Did it reduce the bump steer drastically?

    I'm still debating whether I should get the Pierce one
    or the SharkRacing Torsion.
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  17. #15
    Senior Member Bowie's Avatar
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    Quote Originally Posted by ajcc323 View Post
    Did it reduce the bump steer drastically?

    I'm still debating whether I should get the Pierce one
    or the SharkRacing Torsion.
    I ordered the Whiteline version for $125 on Monday, got it today. That's $50 cheaper than the Pierce. I know the VT forum is a Pierce fanclub and will tel you that one is miles better but Pierce himself said nothing but good things about the Whiteline and basically copied their design and added 9% thickness.
    BHR92 Whiteline Rear Sway bar - 18mm heavy duty Fitment Hyundai Veloster - 2012, 2013
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  18. #16
    Senior Member ECKO's Avatar
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    Nothing wrong with supporting our vendor. I bought Pierce's. It was a personal choice and since he is on the forum pretty much everyday I can get the support I need directly through the forum.
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  19. #17
    Super Moderator RPW00Mirage's Avatar
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    if whiteline didnt replace my busted bar under warranty, i would have certainly bought pierce's

    i bought my ksports from jim. super responsive guy.


    i dont remember having really any bumpsteer before i put it on though...
    2012 Boston Red Veloster NA Base Manual BTRcc tuned 167whp / 138wtq SOLD!
    TK.COM CAI/catback - Nameless poly motor mount - BTRcc 89 octane tune

    2014 Vitamin-C Veloster Turbo Base Manual
    K&N panel filter - Nameless poly motor mount - Curt hitch - CF filler cap
    Hawk ceramic pads - PMS torsion bar - UNIQ front strut bar

    2001 Emerald Green Metallic Kia Rio Manual
    Overhauled suspension - H&R springs - 1Gb control arms / torsion rods

    A6D 1.6L DOHC swap complete! - new hubs/knuckles/brakes next.

  20. #18
    Senior Member Pandemonium's Avatar
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    Quote Originally Posted by RPW00Mirage View Post
    i bought my ksports from jim. super responsive guy.

    i dont remember having really any bumpsteer before i put it on though...
    Are you saying you never experienced
    bumpsteers before your Ksports install?

    I hope we're not talking about Ksport Coilovers
    Or does Ksport have Torsion Bars too?
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  21. #19
    Super Moderator RPW00Mirage's Avatar
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    someone made a pierce comment, so i made a positive remark about my purchase of ksport coils from him.


    i dont remember having bumpsteer when i was stock in either my NAV or this turbo. i put ngm springs on the NAV... the turbo is getting the coils once the snow/salt is gone.
    2012 Boston Red Veloster NA Base Manual BTRcc tuned 167whp / 138wtq SOLD!
    TK.COM CAI/catback - Nameless poly motor mount - BTRcc 89 octane tune

    2014 Vitamin-C Veloster Turbo Base Manual
    K&N panel filter - Nameless poly motor mount - Curt hitch - CF filler cap
    Hawk ceramic pads - PMS torsion bar - UNIQ front strut bar

    2001 Emerald Green Metallic Kia Rio Manual
    Overhauled suspension - H&R springs - 1Gb control arms / torsion rods

    A6D 1.6L DOHC swap complete! - new hubs/knuckles/brakes next.

  22. #20
    Member The.Fobbit's Avatar
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    hi guys, I am totally new to this and knows nothing about cars ... so even after searching other threads on this topic I still don't really understand entirely what the sway / torsion bar helps w/ the driving experience .. probably perhaps I have not bought a V yet and still in the process of getting one ^^|| ... so having that said, do you mind explaining in a lil more details for someone who pretty much knows nothing about cars. I drive a 1998 corolla a/t for about 10 years that i got from my parents and it's mainly just a commute cars for me. I occasionally do drive my mom's Accord which obviously I can tell the difference in power but that's about it. I do feel this sway/torison bar should enhance the driving experience in the new V that I'll be getting, do you think it's recommended for someone like me to get it installed? and if so, is that something I can just have a body shop install for me after I buy the car, or should take care of that at the dealer during my purchase?

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