Lower Torque Box Reinforcement (drag Race)

Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by madmike1157, Dec 18, 2013.


  1. madmike1157

    madmike1157 the humor is still lost on me SN Certified Technician

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    I subtitled the thread because I seriously doubt that anyone would go to the extreme that I did, and as I'm going through the process, I'm thinking that this is clearly overkill for a street car, but it's how I do it, so I thought I'd share it.

    I have access to 1/8" plate, so I have several pieces laying around the garage at any given time. When I decide to reinforce the torque boxes I put that luxury to good use.

    I start by cutting a hole in the floor, directly above the bolt location.
    [​IMG]
    The hole is the center of the bolt, and the edge of the frame.
    [​IMG]
    I cut a piece of plate, drill it to size, then locate it by using the torque arm bolt to hold it in place. I cut it slightly tall to stand 1/8" above the floor level.

    ** why I made this small cut was actually me kidding myself. I thought I could weld the thing through the hole but give all of the dirt, and the fact that the metal I was welding against was galvanized, I thought better of it.

    I cut a bigger hole, following the spot welds of the torque box as a reference.
    [​IMG]
    Now this was more like it. I was also able to clean out a bunch of caked on dirt, prep the sides, and generally inspect the thing for integrity. All that blob u lated weld at the top of the pic is from welding the underside of the torque box.
    All good. I welded the plate along the top and sides.
    Then I covered it w/ a 10 x 8 piece directly on top.
    [​IMG]
    Now you can see why I made the plate stand slightly above the floor, The notch will allow me to tie that plate into the big plate, and not just put it over it.
    [​IMG]
    Da done dah!!
    The entire underside of the torque box is completely welded where it attaches to the frame rail as well.
    Like I said, for a street car, clearly over kill. But If I ever decide to throw a set of slicks on the car, given it'll make over 500 ft lbs of RWTQ. I'll never have to worry about this part.

    Which is a good thing.:banana:
     
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    stangboy, srtthis and A5literMan like this.
  2. 84Ttop

    84Ttop They make new pistons every day, so why worry? SN Certified Technician Mod Dude

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    Nice work! I usually tie the other side in as well. I cut a pocket in the inner frame rail and weld in a 2x2 square washer 1/4" thick to tie the torque box to the frame rail from the other side.
     
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  3. srtthis

    srtthis the guy doing it does every local racers rear end

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    Well done!
     
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  4. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    Nice work
     
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