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Tundra inner CVs popping

Discussion in 'Long Travel Suspension' started by troyboy162, Sep 25, 2016.

  1. Sep 25, 2016 at 11:16 AM
    #1
    troyboy162

    troyboy162 [OP] Well-Known Member

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    Has anyone grafted a Tacoma inner tulip style tripod joint onto a tundra CV shaft?

    I'm believe I'm having trouble with the balls ejecting from the inner tundra CVs but I'm not certain. The first two axles I modified broke the inner joint almost instantly due to my fault at weakening the sheet metal outer shield. I trimmed way too much off those, but I lost two more axles this week and one wasn't modified at all. I strap before they bind with or without modification.

    Could have been some bad luck, but I used up all my spares on the Rubicon driving conservatively this week. The Rubicon did have lots of instance of drooped tires getting traction. Even more then clawhammer really since the rocks are kinda different.

    I'm hoping to find a better inner joint or some sort of adjustment I can make to the plunging of the joint to keep the balls away from the sheet metal. Anyone have experience with this?
     
  2. Sep 27, 2016 at 4:20 PM
    #2
    troyboy162

    troyboy162 [OP] Well-Known Member

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    found info from another forum that the splines on the tunda inner joint are not the same as the 1st gen Tacoma inner joint. The only way to get a tripod joint is to go aftermarket replacement and that historically isnt a good idea for strength. I'm still unsure they would articulate enough anyhow.
     
  3. Sep 27, 2016 at 4:25 PM
    #3
    jberry813

    jberry813 Professional Fluffer Moderator

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    The OEM tundra inners are about as strong as it gets. They are very similar to a 930. The tripod inners suck by comparison. Are you using OE Toyota axles, or aftermarket/remans?
    I blew one outer on Rubicon a few weeks ago, and that was locked front and rear bound up on an obstacle I had no business being on with 33s.
    If you're blowing inners and it's OE toyota, it sounds like you need to strap the travel a little shorter. I've broke a lot of outers, but never the inner. Anything much over 24* and you are asking for trouble.
     
  4. Sep 27, 2016 at 4:48 PM
    #4
    troyboy162

    troyboy162 [OP] Well-Known Member

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    Thanks for the feedback. It could very well need some more strapping as its been over 3 years since I set the droop. The strap may have stretched in that time. The inner race is almost certainly on the end of its plunging travel when I looked at the blown up joint. That made me think maybe its just spitting the ball bearings out through the sheet metal. I'll see if I can check that angle..

    They have all been junk yard OEM sequoia and tundra axles, but the set I modified correctly lasted three years. Only one outer blown so far and that was defiantly due to turning way past the where the OEM stop would have been.

    That Rubicon is fun! Its nice to be out of the desert and still have fun on the rocks :)
     
  5. Sep 27, 2016 at 4:51 PM
    #5
    jberry813

    jberry813 Professional Fluffer Moderator

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    ...too much shit to list.
    When you modify the inner, how much are you cutting off? You just need to cut enough that the axle shaft doesn't hit the cup. IIRC it's only like 1/4-1/2" where the factory inner boot normally attaches too.
    Presumably you are repacking with brand new grease and using a bates 930 boot in its place?
     
  6. Sep 27, 2016 at 5:14 PM
    #6
    troyboy162

    troyboy162 [OP] Well-Known Member

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    The first set I cut off a lot and one blew up instantly on a rock trail. Matt from MCMFab helped me out over the phone to get the second set with only a 1/4 cut like you are saying and with the 930 boots.

    I dont think I droop enough to have the axle hit that lip, but the non-modified spare axle only lasted from buck island to little sluice so something probably isn't right. The first inner blew coming up big sluice so that one didn't really raise my eyebrow.

    With a stronger inner joint looking unlikely I'm going to order some clevis style strap adjusters
     

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