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Best way to measure for new shocks?

Discussion in '40- & 55-Series Tech' started by albee, Jul 13, 2005.

  1. albee

    albee

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    I want to get new shocks for my 67' fj40 with a new four inch skyjacker lift. What is the best way to measure for min and max length?
     
  2. John Smith

    John Smith In the garage

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    Twist it up and measure. Do NOT buy the shocks that skyjacker specs for the lift, they are too short and will limit your flex, they did on mine and a buddy who both ran the skyjacker 4inch springs. I just lived with the limiting shocks but my buddy installed the rear skyjacker shocks up front and bought some longer ones for the rear. I don't remember what he used on the rear but there have to be tons of people on here running those springs who can chime in with what works.
     
  3. woody

    woody unhelpful spotter Staff Member Admin

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    BEST way is a berm...in an ideal situation, you want two opposite corner tires off the ground and the other two opposite corners stuffed hard into the fenders/bumpstops.

    next best is an RTI ramp, but you need to both back up it and go forward.

    for both of these, have your existing shocks removed.

    3rd and least accurate is to measure at ride height and assume 1/3 stroke up travel and 2/3 stroke downtravel. no guarantees that'll be right on tho...my rear suspension is a 14" stroke shock with only 4" of shaft showing....
     
  4. peesalot

    peesalot

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    woody knows .
    Brian , the 12" stroke 5125's 220/70 worked great at rubicon , you would trip at the flex with these shocks and the custom alcan's . I do not think I bounced 1 time . these shocks just plant the tires and they either grip or spin which makes for some fun climbs when all four are hung up and you can just torch the throttle trying to climb.
     
  5. dgangle

    dgangle total rice SILVER Star

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    flex it to the limit with your floor jack and some wood blocks and measure both extended and compressed.
     
  6. red dirt squirt

    red dirt squirt

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    yeah man these guys got it right. articulate it to its maximum position and then measure eye to eye on both the compressed and extended sides. i bought monroe's and put them on my cruiser with the same lift but, they were hard to find and kind of pricyey. seem to work great so far. plus they have them at pepboys
     
  7. woody

    woody unhelpful spotter Staff Member Admin

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    that would work for me except for one problem...on an RTI ramp I can get 60" under my rear tire with the other 3 still on the ground...pretty sure a floor jack isn't gonna do that.....

    floor jack and "max" flex just isn't possible....if you've got a buddy with a shop lift, you might get it then...the KEY is to get your pressure/contact points as far out on the fulcrum (outer edge of tire) as possible so you are fully maxing the flex.
     
  8. camcruiser13

    camcruiser13

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    the floor jack isnt the best way i did it and got to short of shocks. i like the burm idea, a construction zone usually has one or two.
     
  9. albee

    albee

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    Just for kicks I tried the floor jack. The new springs are so stiff, that I could just tip it back and fourth between the wheels that were not on Jack stands. The top is off, no seats, no rollcage, no tailgate. So I was not real suprised it did not work. Maybe I will wait till I get it on the road before ordering shocks. Thanks for the replies. Albee