Boig Motorsports

Visit our community sponsor

Thanks Thanks:  3
Likes Likes:  3
Results 1 to 13 of 13

Thread: Air lift/ aircup suspension

  1. #1
    Senior Member
    Join Date
    Nov 2017
    Location
    Cambria, CA
    Posts
    155
    Post Thanks / Like

    Air lift/ aircup suspension

    So I just drove my car four blocks to the gas station to fuel up for a drive to CHP to complete my registration process, scraped the front splitter leaving the station and now understand the wisdom of some type of air lift system. I see the postings on the Stance air cups and it looks like a good choice. My questions:

    1. Are there other systems that are a better choice in terms of reliability, cost, etc?
    2. I'm using the black Koni shocks. I assume it is necessary to invert them so the piston is on the top (?). Any problem in doing that with the black Koni? i recall that it was not recommended for the yellow model.
    3. The Stance web site has different sizes of air cups. I assume the size is the shaft diameter and I measure mine at just under 16mm. Does that sound right?
    4. Any reason to also add lifts to the rear? At this point my concern is speed bumps, driveways.

    Thanks for any input!

  2. #2
    VRaptor SpeedWorks, LLC's Avatar
    Join Date
    Feb 2011
    Posts
    1,593
    Post Thanks / Like
    If memory serves, it is the black Koni's that must be mounted body-down and the yellow Koni's can be mounted either way. The only other system I know of is Ramlift Pro...which is hydraulic.

    Adding lifts to the rear would probably be nice for high speed bumps and loading/unloading from a trailer where the car wants to get high-centered, but for most cases, the system in the front will help with getting past curbs and incline changes where the nose wants to scrape.
    Shane Vacek
    VRaptor SpeedWorks, LLC
    www.vraptorspeedworks.com
    Turn-key GTM, SL-C & Ultima GTR Built to Your Specs!
    Offering a full line of GTM Upgrades and Custom Parts

  3. Thanks dlud thanked for this post
  4. #3
    Senior Member
    Join Date
    Nov 2017
    Location
    Cambria, CA
    Posts
    155
    Post Thanks / Like
    Is there any reason the Stance Aircups can't be installed with the cups on the top of the shocks? That appears to be how Stance recommends installation.

  5. #4
    Senior Member
    Join Date
    Dec 2018
    Posts
    108
    Post Thanks / Like
    Quote Originally Posted by dlud View Post
    Is there any reason the Stance Aircups can't be installed with the cups on the top of the shocks? That appears to be how Stance recommends installation.
    C5 upper A-arm is too tight to accomodate the cup. If you swap to SPC upper arms and outer plate you get more room.
    File_000.jpeg
    Restored GTM #82 w help of friends. Now cruising, tracking, upgrading.

  6. Thanks dlud thanked for this post
  7. #5
    Senior Member
    Join Date
    Nov 2017
    Location
    Cambria, CA
    Posts
    155
    Post Thanks / Like
    I wonder whether the coilovers from the black Konis will work if I acquire the yellow bodies.

  8. #6
    VRaptor SpeedWorks, LLC's Avatar
    Join Date
    Feb 2011
    Posts
    1,593
    Post Thanks / Like
    I'm pretty sure that the springs are the same diameter for both......so yes, I think you could get the yellow Koni shocks and swap the springs onto them.
    Shane Vacek
    VRaptor SpeedWorks, LLC
    www.vraptorspeedworks.com
    Turn-key GTM, SL-C & Ultima GTR Built to Your Specs!
    Offering a full line of GTM Upgrades and Custom Parts

  9. #7
    Senior Member
    Join Date
    Nov 2017
    Location
    Cambria, CA
    Posts
    155
    Post Thanks / Like
    Quote Originally Posted by VRaptor SpeedWorks, LLC View Post
    I'm pretty sure that the springs are the same diameter for both......so yes, I think you could get the yellow Koni shocks and swap the springs onto them.
    Just heard back from Koni confirming that to be the case:
    "David,

    Yes, the coilover sleeve hardware and upper spring seat from the 8245 shock will also fit the 50mm body diameter of the 30 Series shocks.







    Mason O’Hara

    Technical Sales Representative

    KONI - an ITT company"

  10. #8
    Senior Member DSR-3's Avatar
    Join Date
    Oct 2015
    Location
    San Jose, CA
    Posts
    386
    Post Thanks / Like
    Any comments from Koni on inverting the yellow's?
    818S #332, EZ30R H6, California licensed 01/2019

  11. #9
    Senior Member
    Join Date
    Nov 2017
    Location
    Cambria, CA
    Posts
    155
    Post Thanks / Like
    Yes. Tech support confirmed that the yellows can be used either way: piston side up or down.

  12. #10
    East Coast Speed Machines Erik W. Treves's Avatar
    Join Date
    Feb 2011
    Location
    Huntsville, Al
    Posts
    2,191
    Post Thanks / Like
    FFR 1879, Blown DSS 306,REDLINE management, VeryCoolParts Tuned 460RWHP

    FFR 818S, The Flash, Chassis #5, 2.0L, LSD, Electromotive TEC-S, VCP Tuned, 278RWHP 265 RWTQ

    FFR 6651, Green Lantern, 408W Crate, Hellion 66mm Turbo, JGS Waste gate / Blowoff valve, Tec-GT management, VCP Tuned, 575 RWHP, 690 RWTQ

    FFR 8335, Black Mamba, 289 FIA CSX 2001 tribute car, 347, 48 IDA webers, VCP Tuned, 311 RWHP 386 RWTQ, 3-link, Trigo's

    FFR 0004, Gen 3 , Hawk Coupe, Coyote twin turbo, 683 RWHP 559 RWTQ, IRS, VCP Tuned. "not too shabby"

    US ARMY Maintenance Test Pilot (CW4 Retired)

  13. Likes RR46 liked this post
  14. #11
    Senior Member
    Join Date
    Nov 2017
    Location
    Cambria, CA
    Posts
    155
    Post Thanks / Like
    Erik: do you recall the size air cups you are using?

  15. #12
    East Coast Speed Machines Erik W. Treves's Avatar
    Join Date
    Feb 2011
    Location
    Huntsville, Al
    Posts
    2,191
    Post Thanks / Like
    14mm Sir.
    FFR 1879, Blown DSS 306,REDLINE management, VeryCoolParts Tuned 460RWHP

    FFR 818S, The Flash, Chassis #5, 2.0L, LSD, Electromotive TEC-S, VCP Tuned, 278RWHP 265 RWTQ

    FFR 6651, Green Lantern, 408W Crate, Hellion 66mm Turbo, JGS Waste gate / Blowoff valve, Tec-GT management, VCP Tuned, 575 RWHP, 690 RWTQ

    FFR 8335, Black Mamba, 289 FIA CSX 2001 tribute car, 347, 48 IDA webers, VCP Tuned, 311 RWHP 386 RWTQ, 3-link, Trigo's

    FFR 0004, Gen 3 , Hawk Coupe, Coyote twin turbo, 683 RWHP 559 RWTQ, IRS, VCP Tuned. "not too shabby"

    US ARMY Maintenance Test Pilot (CW4 Retired)

  16. Thanks dlud thanked for this post
  17. #13
    Senior Member
    Join Date
    Dec 2018
    Posts
    108
    Post Thanks / Like
    Finished install w SPC arms. Aircups now fit up top.
    IMG_8026.jpg
    Restored GTM #82 w help of friends. Now cruising, tracking, upgrading.

  18. Likes DSR-3, dlud liked this post

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Julio Car Custom

Visit our community sponsor