1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Spring Over Vs. Spring Under

Discussion in '40- & 55-Series Tech' started by Rusty79, Feb 8, 2005.

?

SPRING OVER VS. SPRING UNDER

  1. Spring over is the way to go

    64.9%
  2. Spring under is the way to go

    35.1%
  1. Rusty79

    Rusty79

    Messages:
    90
    Location:
    Salt Lake City, UT
    After a lot of research I decided to post this in Cruiser Tech. I have over used the search tool and read every suspension article in the tech links section. I think that there is a lot that one can learn by observing the way that others approach things. On to it then...... Spring over VS. Spring Under. Right now I am sitting on the fence on which way to go with the suspension of my '79 40. And I am looking for feedback specifically from 40 owners. I use to think that an SOA rig was only for the trail only, but seeing plenty of SOA daily drives here in Salt Lake I am convinced that an SOA can be done on a 40 and used as a daily driver as well. The bottom line is to see what the masses think. Please Vote for your preferred (or actual) suspension setup. It would also be cool to see descriptions your suspension setups, intended vehicle use, location, etc. Heck, while your at it post some pics of those rigs flexed to the max. Trail pics would be the best! Not that RTI crap. Happy Posting! ;p
    Last edited: Feb 8, 2005
  2. treerootCO

    treerootCO Where are my keys?! SILVER Star

    Messages:
    3,095
    Location:
    Wheat Ridge CO
  3. woody

    woody it's all my fault Staff Member

    Messages:
    9,615
    Location:
    Wisconsin
    I've done many combo's.....SUA with stockers, rearched, rearched with addaleaf, SUA 4" lift, SUA lift with reversal, SOA on stockers, SOA on FJ55 rears, and now SOA front and 4-link elliptical rear....

    IMO, it's a truck, and my road manners never suffered...but it's primarily trail. FJ40's never were much for accident avoidance maneuvers....

    people are sick of pics of mine...lol
  4. Rusty79

    Rusty79

    Messages:
    90
    Location:
    Salt Lake City, UT
    Oh, come on Woody! I would love to see more pics of your 40!!!! If you don't want to post them email em to me.
  5. woody

    woody it's all my fault Staff Member

    Messages:
    9,615
    Location:
    Wisconsin
  6. LT

    LT Supporting Vendor

    Messages:
    1,732
    Location:
    Metal Tech Newberg, OR
    I have done both the 4" sua lift and now i'm on the soa with fj55 rears in the rear. I noticed a huge handeling difference and ride when I converted to SOA. My rig is my daily driver so it sees a lot of highway miles. Another thing to think about is the hard top. With the hard top in SOA things get sideways around corners with the hard top but with a soft top you hardly notice anything and the side to side movement is greatly reduced.

    Travis
  7. Beanie

    Beanie

    Messages:
    55
    Location:
    Salt Lake City
    When it's up the Wasatch Cruisers website is Wasatchcruisers.org

    It's just down at the moment.




    -Sean
  8. Panzer

    Panzer SILVER Star

    Messages:
    640
    Location:
    Decatur, Texas
    sway bar will make a lot of that side lean go away. With and without the top on.
  9. pbgbottle

    pbgbottle Forum Lifer SILVER Star

    Messages:
    4,010
    Location:
    Cloverdale B.C. Canada
    same as woody's post i've done or tried different tings ,just longer shackles ,rearched springs ,add-a-leafs ,and spring-over
    spring-over .is my favourite setup .nice ride quality with stock springs .not to tall of a lift .all in all makes for a nice riding rig . mine also was a daily driver . in the process of doing another SOA right now for my wife. i found the hardest thing to deal with was the steering . (cut and turn is easy ),but now with 4x4 labs .steering arms .the steering is not much of an issue .

    Jake
  10. MarkFJ40

    MarkFJ40

    Messages:
    73
    I'd think a SOA would ride better on the street then any lift spring but I can't really say because I never ran a 4' lift. I went straight to SOA.
    I've daily driven mine.
  11. Isotel

    Isotel Moderator

    Messages:
    4,013
    Location:
    Crawlorado.com
    Spring it over, but if your going to drive on the street alot i would recomend some sort of sway bars

  12. haystax

    haystax

    Messages:
    1,260
    Location:
    Diamond Valley, Nevada
    I voted for SOA, that's what I did to my 40 and I'm pretty happy with it so far. Mostly depends on your tool and shop resources IMO. If you can weld and cut and drill thru the frame, go SOA and save some $$$. Swap the stock springs on both ends and the extra wheelbase gained will also help the highway manners but somewhat lessen the turning radius on tight trails.

    The ride with my stock springs is really soft and it seems pretty stable at speed, even with my new 35's. My top speed currently tops out around 55 so up to that speed, I think SOA is pretty good. No hard top but plenty heavy so far so good :knocking on wood:
  13. Slowerthanu

    Slowerthanu SILVER Star

    Messages:
    1,295
    Location:
    Bountiful, Utah
    I have been through 3 differant setups over the years.

    I am currently SOA with Flipped Front Springs and redriled perches (+4.5) and FJ-55 rears.

    I use the Stiff valved Bilsteins and the handling is fine for the street (I will admit it does not see much street use).

    You are welcome to check it out sometime.

    Hell, you could come out to Moab and see why it is completely worth it.

    Dan
  14. Vitesse_6

    Vitesse_6

    Messages:
    2,234
    Location:
    Taylorsville Utah
    I have a SOA, Im very happy with it, There is alot that goes into a SOA compared to a SUA But I still like the flex, ride, all of it.
    PM me if you wanna stop by, Im strate atta T-Ville Yo!
    Good luck
  15. Rusty79

    Rusty79

    Messages:
    90
    Location:
    Salt Lake City, UT
    Hey thanks man. I probably will stop by. I will let you know.
  16. LIVERUST

    LIVERUST

    Messages:
    276
    I'm currently spring under with 2 1/2" lift springs,extended shackles and front shackle reversal. Not because I thought it was the best way to go, but it was the cheapest lift at the time as I got a good deal on used lift springs. I seriously considered spring over in the rear when I had the lift springs put on. It would have been fairly cheap and easy. It's the front that gets more complicated.
    I think the cruiser rides well and I've been very content with it the way it is now. I don't have a picture of my cruiser flexing, probably because it doesn't, but I'll post this one.

    Edit:
    I found a picture that better represents the SUA flex.
    Last edited: Feb 9, 2005
  17. CruisinGA

    CruisinGA

    Messages:
    6,152
    Location:
    Georgia Tech
    I have a 4" SUA lift.

    I have it because at the time the resources to spring over were not available to me, and I needed to get something under the truck soon.

    Street ride is excelent, daily drove it for 1.5 years after lift install. Flexs well wnough, never been enough of any issue on any of the moderate trails at Tellico.

    Spring over is in the works, and will happen. Just a matter of getting other things in order first. (gearing with SM420, brakes, etc).
  18. redrustbucket

    redrustbucket

    Messages:
    345
    Location:
    Sunny Acres
    Sprung under but want SOA in rear. Rides good but ass end is kind of stiff.
  19. srafj40

    srafj40

    Messages:
    153
    Location:
    Sahuarita, Az.
    Spring under for now 8' garage door (master planned cookie cutter)...




    ...we will be building in two years or so and the garage door will be a 10' door. :D with four bays :flipoff2: (well that is the plan)
  20. Vitesse_6

    Vitesse_6

    Messages:
    2,234
    Location:
    Taylorsville Utah
    I fit mine in 8' door's, I have room for 4 in my garage....LOVE it!

Share This Page