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convertible front battery tie down

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    convertible front battery tie down

    I asked about this the other day since I was going to be autoxing an hour away tommorow and as not to waste my time I'd like to pass tech, anyway, I did a home depot run and a little work and I made myself a tie down. Eventually I'll move the battery to the trunk, but for now this works. Since I hadn't seen a front tie-down before, I figured I'd share:

    Edit: I can only confirm this works with the bosch battery. Other batteries might be different.

    Home Depot tie-down:
    I used:
    2x - 8"+ x 1/4" thread
    1x - 12"+ x 1" x 1/8" plain flat metal strip
    6x - 1/4" nut
    3x - 1/4" washer
    2x - 1/4" lock-washer

    It goes across longways.


    Take out the battery. You can use those two holes already in the battery tray. I had to drill the inner hole out a very little bit to fit my bolt through.


    Cut the thread 8" long, and put a nut at the end you cut. Then melt/mash/weld/whatever the nut to the end so it doesn't move and you make a bolt. Repeat on the other end. If you can find 8" 11mm bolts somewhere you don't need to worry about this.


    Cut the metal stip 12", put the battery in and mark it where the bolts will go through. Then drill it.


    This is what the setup looks like not in the car.


    Thead the bolt through the hole, then put the washer, lockwasher, and bolt down, then tighten it up. Repeat on the other side.


    Put in the battery.


    Slip on the metal strip, tighten it on.


    Viola! That baby isn't going anywhere.

    Edit: It was pointed out that I should paint the flat metal, and probably the thread too, in order to avoid the corrosion that occurs near battery terminals. This is a good idea.
    Last edited by Jordan325iC; 08-07-2006, 07:26 PM.

    '88 325is
    VP UT of Austin Autoholics
    BMWCCA 380364

    #2
    Nice! I think I may be doing the same thing.
    Aaron

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      #3
      do auto-x require it "Tied-Down"?

      mine is so oversize that it doesnt budge barely

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        #4
        Well the auto-x I went to said if the "battery moves at all" it will fail, so I didn't want to take any chances. Stock it has a little tie-down on one side, but it doesn't do much, it can still wiggle.

        Oh yea, and it was pointed out that I should probably paint the components to keep them from oxidizing next to the battery terminals. This is probably a good idea.

        '88 325is
        VP UT of Austin Autoholics
        BMWCCA 380364

        Comment

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