Forza or QA-1 adjustable coilovers | FerrariChat

Forza or QA-1 adjustable coilovers

Discussion in '308/328' started by Russ Gould, Feb 12, 2022.

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  1. Russ Gould

    Russ Gould Formula 3

    Nov 8, 2004
    1,075
    Anyone done a serious comparison? The QA-1 route is a bit cheaper and you don't have to modify your upper levers. But you do have to add some bits to the stock unit and the methodology is a bit bubba. The Forza setup is available in a "low" version and looks more technical. You have to cut a slot in your A arm

    For those who want to learn more
    Birdman's QA-1 page http://www.birdman308.com/service/suspension/suspension.htm
    Nick Forza https://www.nicksforzaferrari.net/nff-custom-coil-overs.html
     
  2. 4right

    4right F1 Rookie
    Rossa Subscribed

  3. Russ Gould

    Russ Gould Formula 3

    Nov 8, 2004
    1,075
    Could you share who does that work and the cost? The springs don't look original at all .. are they avail in different stiffness ratings?
     
  4. Cennzo

    Cennzo Karting

    Jan 29, 2020
    112
    Sausalito CA
    Full Name:
    Vince Dattoli
    That Koni setup looks cool, as you can adjust ride height, but what are the damping specs? I first pulled my Koni’s and adjusted to hardest damping and hardly noticed a difference. I then went the QA1 route and am happy with it. I probably would’ve gone 50 lbs more on the springs if I were to do it again (still could order and fit them of course) but the compliance for bumpier roads is actually fine and I was able to adjust the damping to a nice rebound firmness. Swapping the bushing inserts to metric from the QA1 SAE was no big deal. And Speedway has a shock extension that seems to do the same as the “paperweights” for a lot less $ though I have not tested it.
     
  5. Nino1964

    Nino1964 Formula Junior
    Silver Subscribed

    Aug 14, 2015
    302
    North Georgia
    I’m using Spax adjustable coil overs from Superformance. Easy install, adjustments and nice ride.
     

    Attached Files:

  6. 4right

    4right F1 Rookie
    Rossa Subscribed

    This setup was done by True Choice, I have also used Carobu. With both you can select the spring brand and rates. They can provide pricing for the work that you want done.
     
  7. cantthinkofone

    cantthinkofone Karting

    Jul 12, 2018
    146
    New York
    Full Name:
    Michael Orifici
    I run QA1 double adjustable in my 308gtb. I think they are great. Simple install. And the double let me fine tune exactly how i was.

    Sent from my SM-G991U using FerrariChat.com mobile app
     
  8. Russ Gould

    Russ Gould Formula 3

    Nov 8, 2004
    1,075
    Looking at the picture on birdman's site showing the new shock next to the old, with the need eyelet extension the new shock appears to be about the same length as the OEM shock .. and given the higher spring rating I fail to see how this setup lowers the front end at all? Image Unavailable, Please Login
     
  9. Brian A

    Brian A F1 Rookie

    Dec 21, 2012
    3,155
    SanFrancisco BayArea
    Full Name:
    1983 US 308 GTS QV
    If it is just ride height adjustment that you are after, there are simpler solutions than changing dampers and springs.

    Here is a link to my thread documenting the process:
    Lowering a 308 Using Custom Lower Spring Perches

    Although I have never researched changing spring rates, the stock springs look like pretty conventional things so it may be that a variety of aftermarket springs are available and inexpensive.

    If your stock shocks are shot, well, that is a different matter.
     
  10. Russ Gould

    Russ Gould Formula 3

    Nov 8, 2004
    1,075
    Well there's quite a bit more to it than just ride height. The stock springs are 175lb and way too soft, and they have been cut unequally. The Koni shocks appear to be AOK, new bushings, I will be selling those if I choose to go with aftermarket. Putting larger (and lighter) front brakes on the car, and replacing all the rubber.
     
  11. miketuason

    miketuason F1 World Champ
    Owner Silver Subscribed

    Feb 24, 2006
    15,834
    Cerritos, CA.
    Full Name:
    Mike
    Most do have or uses the famous QA-1 and some has the Nick Forza set, I OTOH and very few FChat members had gone with the Vari Shock. VS also has the “paper weight” with similar dimensions as Verell’s so the bushing kit from Verell’s paper weight (without the paper weight itself) does work with the Vari Shock paper weight.

    Image Unavailable, Please Login Image Unavailable, Please Login
     
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  12. Brian Harper

    Brian Harper F1 Rookie
    Owner Silver Subscribed

    Feb 17, 2006
    4,078
    San Jose area
    Full Name:
    Brian Harper
    That's funny, I consider taking a saw to an A-arm way more "bubba" than adding a beautifully machined aluminum extender intended for the job to the end of the shock. That could just be me.
     
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  13. Russ Gould

    Russ Gould Formula 3

    Nov 8, 2004
    1,075
    I was referring to the need to grip the shock piston with a pair of pliers to change out the eyelets. But yes, cutting A arm not ideal either ... albeit in a non-critical area. Maybe Vari Shok or Spax involve no need to mutilate anything ...
     
  14. Russ Gould

    Russ Gould Formula 3

    Nov 8, 2004
    1,075
    Mike, whose ARB is that? And the adjjustable drop links?
     
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  15. Cennzo

    Cennzo Karting

    Jan 29, 2020
    112
    Sausalito CA
    Full Name:
    Vince Dattoli
    If that’s your main worry, having installed mine, there was no need to mutilate anything. The top eyelets easily came off . . . just saying . . .
     
  16. miketuason

    miketuason F1 World Champ
    Owner Silver Subscribed

    Feb 24, 2006
    15,834
    Cerritos, CA.
    Full Name:
    Mike
    That is the old Saner adjustable swaybar with the 1/2” heim joint as my drop link.
     
  17. Russ Gould

    Russ Gould Formula 3

    Nov 8, 2004
    1,075
    Seems to me, if you lower the car, the drop links should be shorter than stock to maintain perpendicularity with the bar in both planes when the car is sitting on the ground ... or does that not matter?

    I read that guys had trouble with the Saner swaybars, seems yours worked out aok.
     
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  18. miketuason

    miketuason F1 World Champ
    Owner Silver Subscribed

    Feb 24, 2006
    15,834
    Cerritos, CA.
    Full Name:
    Mike
    The car is up on a Jack stand that’s why the swaybar looks like it’s not perpendicular but once I set it on the ground, the bar will be perpendicular and the drop link is just right in fact almost the same length as the original drop link. My car is also lowered almost two inches without any issue. The pic shows the current ride height. Everything is measured and adjusted just right.
    Image Unavailable, Please Login
     
  19. Russ Gould

    Russ Gould Formula 3

    Nov 8, 2004
    1,075
    Good to know, I was about to replace my stock droplinks with rear droplinks, they are about 1" shorter.

    Those wheels are pure sex.
     
  20. pedders

    pedders Karting

    Apr 25, 2010
    69
    These seem like a low hassle, reasonably priced adjustable set up, and so I’d be really keen to hear what you think about the ride quality - I’d love to have the adjustable ride height, but don’t want to turn the car into a bone-shaker. How do they compare to the standard set up in terms of compliance/ride quality? Thank you!
     
    eurocarguy101 likes this.
  21. Nino1964

    Nino1964 Formula Junior
    Silver Subscribed

    Aug 14, 2015
    302
    North Georgia
    Ride is good. It’s no different than original in terms of firmness.
     
  22. Russ Gould

    Russ Gould Formula 3

    Nov 8, 2004
    1,075
    Any input on the overall length of the DS402 front QA1 setup with the required "paper weight" (top eyelet extensions)? My stock setup measures 15 3/8" to the centerlines of the eyelets. The recommended QA1 shock DS402 measures 14". Add the paperweight (extends the shock by ?1"), and with the stiffer spring, I think you come back to the same ride height at the lowest setting (fully extended)?
     
  23. Cennzo

    Cennzo Karting

    Jan 29, 2020
    112
    Sausalito CA
    Full Name:
    Vince Dattoli
    Yes, you can keep the ride height the same as stock if you wish. I found that the fronts “settled” about half an inch and the rears about 1/8-1/4” after I drove it around for about 100 miles. I went by Birdman’s suggestion of how high to adjust the sleeves before mounting them and the car settled pretty evenly and amazingly I only had to do about two turns on one rear shock to get the car to corner balance perfectly. Also, I set the damping halfway at 9 clicks initially but then adjusted them all around to 13 (out of a possible 18 max) which gave it more of the feel I wanted.
     
  24. ProvaMo

    ProvaMo Formula Junior

    Jun 29, 2004
    353
    Mid West
    Full Name:
    Paul John
    miketuason likes this.

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