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Technical Frame modification Question

Discussion in 'The Hokey Ass Message Board' started by Iron Dash, Oct 24, 2016.

  1. Iron Dash
    Joined: Jun 20, 2016
    Posts: 5

    Iron Dash

    Hello, purchased a project from someone who didn't have the time to see it through completion. They had already built a frame, but I need to get 3 more inches out of the rear Z for a nice ride height and spring travel. He has nice lap welds at the joints.

    So to get the 3 extra inches needed do I:
    1. Splice 3 inches in the middle of the existing risers and reinforce the middle with additional lap welds?
    2. Completely cut out the risers and re-add at the proper length? What would I do with the pre-existing reinforcements?
    3. Since the rise needs to occur further back, cut off the rear of the frame and add a second tier of riser over for the last 1.5' of the frame?
    4. Other

    Thanks for the help!
     
  2. Gearhead Graphics
    Joined: Oct 4, 2008
    Posts: 3,212

    Gearhead Graphics
    Member
    from Denver Co

    Sell that frame to someone else and start over. No cutting and welding to change it will look as clean as just doing it the way you wanted it from the start.
     
    michael knight and Hnstray like this.
  3. Option # 4 ~ Sell the frame and start over. HRP
     
    Hnstray likes this.
  4. tikiwagon13
    Joined: Feb 23, 2011
    Posts: 371

    tikiwagon13
    Member

    ^^ what they said
     
    Hnstray likes this.
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  5. What they said. ^^^^^^
     
  6. squirrel
    Joined: Sep 23, 2004
    Posts: 44,337

    squirrel
    Member

    is four opinions enough, or do you need yet another "like he said...."?
     
    X38 likes this.
  7. All I can add is that if you need another 3'' of kick-up in addition to the huge amount already there, you're on the wrong website.
     
    cretin, thirtytwo, Fry and 8 others like this.
  8. mike bowling
    Joined: Jan 1, 2013
    Posts: 3,437

    mike bowling
    ALLIANCE MEMBER

    Or getting some BAD info- what the hell are you putting under there???
    Check your figures again.
     
    oj likes this.
  9. redo32
    Joined: Jul 16, 2008
    Posts: 1,535

    redo32
    Member

    What type of rear suspension were you planing to use? With the frame laying on the ground it looks like the rear end will still slide under the kickup. You can't have a negative ride height. Put a 4 bar and air bags on it and don't show us. You can still lay frame & jack it up for 4" of road clearance.
     
  10. HotrodHR
    Joined: Jul 12, 2010
    Posts: 190

    HotrodHR
    Member

    I'm curious, how did you determine you needed three more inches? What are you putting on it?

    I would not splice to lengthen it or to raise the back up... buy the time you're done you could have started with the correct length rails and do it right.

    Sell it, trade it or scrap it and start over.

    BTW, I think we could all use a few more inches...
     
  11. Frames work best when they aren't carving out asphalt as they pass over it, with the right suspension that kick up will work fine though I feel it's already well in excess. You set your ride height with weight on the springs too, so you'd likely be in the ball park as is. Need more details from you for what you're shooting for.
     
    gimpyshotrods likes this.
  12. If the rest of the frame looks like the back end of it in the picture........ your not starting with much. So if It's not to your liking start over. Don't cut and stitch.
     
  13. Iron Dash
    Joined: Jun 20, 2016
    Posts: 5

    Iron Dash

    Thanks to all that replied. I am planning a build similar to tikiwagon13's profile picture (classy, fully finished). I was planning to put airbags on lay the frame down on occassion when I want that low look. However, was planning a 3.5" ride height routinely with the ability to raise it up for occasional obstacles.

    So I retook measurements to ensure accuracy. The rear of the frame sits 1.5" off the ground when resting on top of the rear end. Assuming a 3.5" ride height, I would be leaving 2" for axle travel before hitting the frame, less with a bumpstop. Whether going with a sprung or air setup, I do not feel that this is adequate. Am I mistaken? I read through other parts of the board here that 5-6" of travel is optimal, hence my need to get at least three more inches. The rear wheels are 20" in diameter without tires to put it into perspective. Am I mistaken, is there a way to make this setup work, either with air or springs? Thanks for the wealth of knowledge.
     
  14. Gearhead Graphics
    Joined: Oct 4, 2008
    Posts: 3,212

    Gearhead Graphics
    Member
    from Denver Co

    keep in mind when 5-6 inches of travel is mentioned that's full compression to full drop 5-6 inches, not 5 up and 5 down
     
    Iron Dash likes this.
  15. Atwater Mike
    Joined: May 31, 2002
    Posts: 9,851

    Atwater Mike
    ALLIANCE MEMBER

    When the rear wheels are 20" in diameter (without tires) which perspective does this put it in?
    Methinks a deeply channeled Model A sedan is afoot...
     
  16. I agree. 5" or 6" of travel is way off.
    My A has 1.5" of travel at the rear. It rides great. And I drive it a lot.
     
  17. DdoubleD
    Joined: Nov 18, 2009
    Posts: 220

    DdoubleD
    Member
    from Michigan

    Unless your a Jeep. Sorry couldn't resist.
     
  18. With 3.5" ride height why would you want any down travel let alone 5" .

    Banging off of the bump stops isn't any fun, bouncing off the pavement can get you in a heap of trouble real quick.
     
  19. thirtytwo
    Joined: Dec 19, 2003
    Posts: 2,594

    thirtytwo
    Member

    Exactly... Also research the term "scrub lines " and fully comprehend as to why they are a concern
     
    cretin and olscrounger like this.
  20. Iron Dash
    Joined: Jun 20, 2016
    Posts: 5

    Iron Dash

    Thanks all for the feedback. Have a busy couple of weeks ahead but hope to make some progress soon. Yes, chopped and channeled A on the way.
     
  21. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 15,289

    tb33anda3rd
    ALLIANCE MEMBER
    1. Connecticut HAMB'ers

  22. tikiwagon13
    Joined: Feb 23, 2011
    Posts: 371

    tikiwagon13
    Member

    My frame has 6' kickup in the front and 12 " kickup, just as an FYI.
     
  23. Iron Dash
    Joined: Jun 20, 2016
    Posts: 5

    Iron Dash

    Thanks Tiki, nice ride btw! Do you know your overall wheel diameter? Mine are definitely a lot bigger than yours and I want to get an idea of your overall fitment proportions. Thanks
     
  24. tikiwagon13
    Joined: Feb 23, 2011
    Posts: 371

    tikiwagon13
    Member

    Overall diameter is 28"
     
  25. A Boner
    Joined: Dec 25, 2004
    Posts: 5,282

    A Boner
    Member

    ^^^^what he said
     

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