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Suspension?

Discussion in 'Suspension & Brakes' started by ej205scoob, Nov 12, 2007.

  1. Offline

    ej205scoob New Member

    Member Since:
    Nov 12, 2007
    New to the scion and im wondering what mods are most effective for improving handleing. What do you think of F&R sways? and a rear tri-angle strut brace? Does anyone have any track experience on the stock struts/springs? What do you think of a Koni/TRD combination? thanks.
  2. Offline
    • Staff / Moderator

    navylife59 Super Moderator

    Member Since:
    Mar 22, 2006
    Location:
    2005 Scion Tc
    Sorry For The Long Post. I Am On A Portugese Island With Nothing To Do

    I am getting good cornering/braking performance with the Hotchkis Stage I TVS springs, rear sway bar, front strut bar, and OEM front swaybar on the stock craptenzas. I can't tell you much about translating from one corner to another as I have yet to hit a track. I can say that I can take some bumpy, sharp, and flat curve on gravel/asphalt Texas Farm to Market roads at twice the posted speed limits.

    I currently changed to the Greddy front strutbar and have a MMW rear strutbar. I have a solid opinion of the following:

    * Rear strutbars are useless as the rear strut towers are on even keel with
    the rear subframe and are interconnected with a multi-setion, semi-box
    beam.
    Rear Floor Crossmember Assy.jpg
    * Being a hatchback and with a retractable roof, rear body stiffening is more
    important. The front and rear subframes break is just after the B-Pillar.
    There are a few companies out there muddling around with stiffening
    enhancements here but I feel that mostly miss the mark in stemming body-
    flex.
    Subframe Break.jpg
    * Front strutbars are mainly have the same capability in stopping strut tower flexing. The tC has a hefty steel lower front crossmember attached directly to the frame and the strut towers are short so flexing is not a large problem.
    Strut Towers.jpg
    With that in mind any lightweight should be capable in staying longitudinal stresses, as long as, it is of sufficient quality. However, the main differences are the routing of the bar and the mounting of the assembly to the strut towers. The strut towers have ridges not smooth surfaces.
    Strut Tower Ridges.jpg

    Hotchkis and TRD make adequate strutbars that have excellent fit an function. Greddy makes a heavy duty unit, but has the drawbacks of the bar being just over the coilpacks and the mounts not mating smoothly with the strut towers. The mount plates are IMO to thick to utilize the strut mounting studs properly to get a ful 2 threads above the top of the nut. Note: I have been using this strutbar for over 6 months w/o problems using my own shims.
    Greddy Strut Bar Mount - Lft.jpg

    My recommendations for a good street/light track use setup that is easy, solid, and inexpensive are the following:
    1. Hotckis Stage I TVS
    2. Hotchkis Rear Camber Links
    3. Hotchkis or TRD Front Strutbar
    4. TRD, Koni, Tokico, or other performance strut replacement
    5. Higher quality tires
    6. A Dealership alignment based on TRD Lowering Springs specs
  3. Offline

    StreetracerJay New Member

    Member Since:
    Dec 1, 2006
    Location:
    2007/scion/tc
    I auto cross. I have eibach springs, trd struts, trd strut bar and trd sway bars. It handles great.
  4. Offline

    Nicolasr21 New Member

    Member Since:
    Mar 20, 2007
    Location:
    2007/Scion/TC
    Is the benefit of the Rear Camber Links worth the money?
    I've been looking around online and they seam kind of pricy 200$+/-
    I'm not ganna throw the car into the track.....not yet anyways,
    I'm just looking for a smother ride.

    Thanks.
  5. Offline

    ac3 b00gi3 New Member

    Member Since:
    Jul 13, 2007
    Location:
    2005 Scion tC
    You can try

    - GReddy F&R Strut Bars
    - Tein SS Coilover Kit
    - Hotchkis F&R Sway Bar set
  6. Offline
    • Staff / Moderator

    navylife59 Super Moderator

    Member Since:
    Mar 22, 2006
    Location:
    2005 Scion Tc
    I have exact even wear on all tires with them on the rear and nothing on the front. Recommended on anything close to a 2" drop which is beyond the factory rear camber adjustments.
  7. Offline

    imthaman1989 New Member

    Member Since:
    May 22, 2008
    Strut assembly torque specs

    I was wondering if anyone could give me the complete torque specs of the front and rear strut assemblies on the '05 to '08 tC. Any help would be awesome. I need it asap too. thanx

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