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Thread: welded diff question

  1. #1
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    welded diff question

    Many many years ago, I had a friend weld a differential to act like a spool. Instead of just welding the spider gears, he put an aluminum block in the center and welded it all together. I'm assuming that using this differential would cause the carrier bearings to fail quite often due to the differential being out of balance. Thoughts?

  2. #2
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
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    Re: welded diff question

    I've made several welded diffs. in my younger years and found one method to be best. I remove any shims between the axle gears and spider gears and weld the axle gears and spider gears to the carrier. but not to each other.

    When the axle and spider gears are welded together something always cracks, I'm assuming not welding them to each other allows a bit of carrier flex to avoid cracking. I always found a Ni rod welds the best, probably due to the nickel content, although there might be a better welding method now.

    I'm assuming you aren't going to drive this on the street, as a FWD with a spool etc. is a monster to drive.

    Thanks
    Randy.


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    Re: welded diff question

    How did he weld an aluminum block to steel parts?

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    Re: welded diff question

    I was going to say something about that, but decided to leave it be...
    [SIGPIC][/SIGPIC]

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    Re: welded diff question

    Quote Originally Posted by Reaper1 View Post
    How did he weld an aluminum block to steel parts?
    He used an experimental technique involving a dolphin, a can of tuna, and a box of I'm an idiot.

    I couldn't remember why I asked him to tig weld it instead of mig welding it myself, just assumed it was aluminum for some reason. This was over six years ago. So the fact that a "steel" block is welded in there to throw off balance isn't the bad part, but having everything welded together is. This is in my mid engine rear drive omni, so no steering issues.

  6. #6
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    Re: welded diff question

    Man, a locked diff in a mid engine car with a relatively short wheelbase must be a handful!

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