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Thread: The 913 Experiment

  1. #1
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    The 913 Experiment



    There seems to be a lot of mystery surrounding the OME 913's Lift Springs. When compared to the more common OME 912's. Some say the 913 is taller, some say the 913 is shorter and some say the 912 and the 913 are the same with different spring rates. I'm going to put all that to rest by being the guinea pig. I found this thread OME 912 vs. 913...what's the difference?!? was somewhat helpful in the fact that the 913 was shorter.

    I recently had new wheels and tires installed, Nitto Terra Grapplers 285/60/18. The tire place cranked the torsion bars about 2" to get tires to fit. I couldn't tell you how many turns on the torsions because the tire shop did that. With the front end lifted and aligned, the rear sat way too low. Now my challenge was to lift the rear to have a proper stance.

    I had originally planned for a larger lift so I previous purchased OME 912's. The next day I installed the 912's which looked OK but was a bit too high when compared to the front. Then I tried the Spring Spacers on the Stock Springs. It was too low, needed something in between. Thats when I tried the 913's. Below is some measurements I made that may help someone else.

    Instructions for installing OME Rear Coil Springs
    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    The Experiment: Comparing different lift options


    Set of Old Man Emu 912 & 913 Springs



    Set of Daystar Spring Spacers - KC09103BK
    (94-08 Dodge 1500-3500 2WD)
    1 1/2 in. Front Budget Boost
    Actual measurement of spacer is only 1 in. not 1 1/2 in. as stated on box

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    Base measurements with Stock Springs:
    with Nitto Terra Grapplers 285/60/18 (Diameter 31.38 in)

    Front:
    Gap between tire and cladding: 5 3/4 in.
    Distance from floor to edge of cladding: 36 1/4 in.

    Rear:
    Gap between tire and cladding: 4 1/2 in.
    Distance from floor to edge of cladding: 35 in.


    The front lifted and aligned, the rear with Stock Springs

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    Spring measurements:

    Stock Springs
    measured height: 15 1/2 in.
    measured spring wire diameter: 10.8 mm.

    OME 913 Springs
    measured height: 15 1/2 in.
    measured spring wire diameter: 15 mm.

    OME 912 Springs
    measured height: 16 1/2 in.
    measured spring wire diameter: 15 mm.

    Daystar Spring Spacers - KC09103BK
    Actual measurement of spacer is 1 in.



    Stock & OME 913 are the same height, OME 912 measures 1 in. taller

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    Experiment #1
    Daystar Spring Spacers on stock springs
    Gap between tire and cladding: 5 1/2 in.
    Distance from floor to edge of cladding: 36 in.


    Test with Daystar Spring Spacer on Stock Spring & OME 912

    Daystar Spring Spacers on stock springs
    with stock spring isolator inserted
    Gap between tire and cladding: 5 3/4 in.
    Distance from floor to edge of cladding: 36 1/4 in.


    Stock spring isolator fits nicely into the Daystar Spring Spacer, added an extra 1/4 in.

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    Experiment #2
    Set of OME 913's
    with stock spring isolators
    Gap between tire and cladding: 6 1/4 in.
    Distance from floor to edge of cladding: 36 3/4 in.

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    Experiment #3
    Set of OME 912's
    with stock spring isolators
    Gap between tire and cladding: 7 in.
    Distance from floor to edge of cladding: 37.5 in.



    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    Rear Lift Test Conclusion:

    Lift with Daystar Spring Spacers on stock springs: 1 in. lift

    Lift with Daystar Spring Spacers on stock springs with stock spring isolators: 1 1/4 in. lift

    Lift with OME 913's with stock spring isolators 1 3/4 in. lift

    Lift with OME 912's with stock spring isolators: 2 1/2 in. lift


    The 913's gave me the stance I was looking with a very slight forward rake

    I drove around with the 912's for 2 weeks before I installed the 913's. The 913's seems to ride stiffer than the 912's, the 912's felt softer and the 913's has less body roll in turns.

    The Daystar Spring Spacers were less than half the price of the 1 in. Independent 4X Spring Spacers.

    The Spring install is very easy to do. I counted 7 times I changed out the Springs to do these tests. got it down to 15 min. a side.

    I ended up selling the 912's and Spring Spacers to "Jofotz"

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    Some other rear lift possibilities, better left for someone else to test.

    OME 919's

    Other Daystar Spring Spacers

    Prothane Spring Spacers

    Independent 4X Spring Spacers (I wonder who really makes these, Daystar?)

    Any Spring Spacer that fits (94-08 Dodge 1500-3500 2WD)

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    Sources I used:

    OME 912 and OME 913
    http://www.davesport.com/

    Daystar Spring Spacers - KC09103BK
    http://www.amazon.com/

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

    Additional Info:

    OME913
    Free Height: 390 mm., 15.35 in.
    Number of Coils: 9.3
    lbf/in spring rate: 180-300
    Application: (medium Amigo/Rodeo 5door coil spring 98-02)
    ________________________________________________

    OME912
    Free Height: 420 mm., 16.54 in.
    Number of Coils: 10.8
    lbf/in spring rate: 180-300
    Application: (medium load Trooper 92-02)
    ________________________________________________

    OME919
    Free Height: 430 mm., 16.93 in.
    Number of Coils: 10.8
    lbf/in spring rate: 200-280
    Application: (heavy load Trooper 92-02)
    ________________________________________________
    Source: OME 912 vs. 913 post #9

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>



    Source: ARB Application Guide

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>


    The final result with OME 913's

    I hope this answers some questions about the OME 913's.
    rickshaw
    Last edited by rickshaw : 07/07/2009 at 09:43 PM
    rickshaw
    Original Owner
    2001 Dragon #0467

  2. #2
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    HOLY **** AWESOME THREAD RICK!

    Very nicely done, when i decided to lift my vx i had the same problem of which ones to go with. I ended up going with ome912s because of the majority with them.

    But your thread here clearly evens up all the confusion
    Thanks!!!

  3. #3
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    Thanks rick for going thru all this so now every body can have a better pic of how the VX looks like with different springs sets.

    I may consider lifting my Vx couple of inches next year god's spare.


    Love your VX man,looks better then new
    Very nice !
    Dakar was just the begining.

  4. #4
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    Thumbs up

    Quote Originally Posted by Sprey View Post
    HOLY **** AWESOME THREAD RICK!

    Very nicely done, when i decided to lift my vx i had the same problem of which ones to go with. I ended up going with ome912s because of the majority with them.

    But your thread here clearly evens up all the confusion
    Thanks!!!
    X 2...

    I'll add that I have 919's with a 1" spacer. I don't have any measurements for comparison, but I know they're designed to carry a heavier load than the 912's or 913's.
    Nice job on the spring tutorial, sorry I couldn't provide more info...

  5. #5
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    Great job......great write up! Thanks for the info.
    Peace.
    Tom
    "Through Great Sacrifice..... Great Rewards Will Be Achieved"

  6. #6
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    Great visual info Rick: I purchased a set of 913's and they were for a lift but a smoother ride, but decided against lifting and sold them to a member. And as Ldub mentioned the 919 is an Extra Heavy Duty spring
    [SIGPIC][/SIGPIC]
    " Jeeps are nice, Barbie has one"

  7. #7
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    That felt like it should have been presented through a projector while we sit around drinking tea or coffee in a conference room.

    Very Nice. Yet another reason it would be nice to have stickies.

  8. #8
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    Great, I wish I would have uncovered this 912 v 913 prior to this. I researched lift options for months on our site and figured ome 912's was the hands down winner. So I ordered some. Then I start finding all these "noise and vibration problems and all these cv boots rippin' and rear axle angle problem threads. Now it sounds like way more harm than good. I honestly thought the ome 912(the so called med duty ones) would be the more conservative overall lift versus the 913(heavy duty) springs. Now that goes out the window since Rickshaw found they are too soft and overlifted his ride. My OME 912'S will arive NIB next week from RockyRoad. They will likely be up for sale as soon as I get them so I can go back to researching for another 6 months.
    Opinions welcome.
    [SIGPIC][/SIGPIC]
    Milwaukee WI

  9. #9
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    Awesome write up Gene...




    jo
    VX.info...PLEASE SUPPORT THIS SITE WITH YOUR VOLUNTARY $20 DONATION...
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  10. #10
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    Jo,That must mean the silver mistress is getting some air space!:bgwp:
    Billy Oliver
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  11. #11
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    A+ dude. This is a first rate example of why this forum ROCKS.

    Bart

  12. #12
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    Great Info....................

  13. #13
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    Undoubtedly, one of the very best presentations I have ever seen on Vehicross.Info complete with graphics and commentary. Very professional and informative. Riff Raff

  14. #14
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    Thank you so much for great write up. decided to go with the 913's based on your info.

  15. #15
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    I don't get it. It sounds like people are saying the 913's are better than the 912's. Looks to me that they are simply different.


    And great write BTW.

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