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  • Chewing out Inner CV Boots on lift

    G'day All,

    Ive got a V6 Prado and I have a Dobinson lift kit in it. I'm having trouble trying to stop my inner CV's from rubbing against themselves and wearing through. I recently procured a 1" diff drop kit from Glen EP (thanks for the quick turn around) in hope that it would help with my drive shaft angle, it helped just enough on drives side, but not enough for passenger side.

    Surely there are others out there that have a lift kit and have been through this problem and am wondering what you have done to correct this. Worst comes to worst I'll consider going back to standard ride height if need be. We do an annual 4 week trip which involves lots of dirt roads and water crossings that I don't want to destroy some cv's due to boot failure.

    Appreciate all responses.

    Deano

  • #2
    How big is the lift?

    Comment


    • #3
      Originally posted by Piggy View Post
      How big is the lift?
      Dobinsons' '35mm' kit, but I suspect it may be a little higher.

      Comment


      • #4
        same problem mate and i haven't even done the diff drop.

        i average about 1 inside cv boot per year over the last 4 years lol

        SAMUEL
        [I]Maroochydore, Sunshine Coast, Queensland[/I]
        1999 Toyota Landcruiser Prado RV 4cyl 2.7L Manual, Lifted 2-3" on Dobinson Springs & Shocks, Cooper STT Max Mud-Terrains in 235/85R16 all-round 32", Custom no Bullbar winch mount with Runva 11XP Winch, Black Sliders, 10000 Lumen, LED Lightbar

        Comment


        • #5
          Originally posted by juc33_prado View Post
          same problem mate and i haven't even done the diff drop.

          i average about 1 inside cv boot per year over the last 4 years lol

          SAMUEL
          Out of curiosity Samuel, do you replace the boots with aftermarket or OEM Toyota?

          Comment


          • #6
            I have a theory that with the rotating the rubber boots move into a position that has no stress on them, so once the lift has happened there put under stress, therefore tearing, they need to be moved so there not stretched as much before its driven to much

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            • #7
              I've had a 2 inch lift since 2012 and have done heaps and heaps of 4wding at both fourby parks and in the bush. The inner boot on the driver's side cv shaft let go a few weeks ago for the first time. I'm going to replace it within the next month myself. I bought an aftermarket cv shaft for $115. The passenger side boot looks good so I won't replace it unnecessarily. I've always had 265/75 R16 mud terrain tyres fitted since the suspension lift. A 265/75 mud terrain tyre is taller in height when compared the same sized road tyre or all-terrain tyre. I'm just wondering if running muddies with the raised tread blocks, in turn lifting the cv shaft up a tiny tad, decreases the chances of tearing the inner boot than an all-terrain or road tyre in conjunction with the suspension lift? Are your chances of tearing the inner boot greater again if running a shorter 265/70 tyre which lowers the position of the cv shaft a bit?

              So my theory is, if going up in tyre size from a 265/70 to a 265/75 muddy, you'll massively decrease your chances of tearing an inner cv boot because you've taken the edge off the sharpness of the cv shaft angle.
              But the trade off is when running the larger diameter LT construction tyre for a really long time your steering rack will show more signs of wear & tear than what it would if running a smaller lighter tyre.

              A 3 inch lift I would not even contemplate with the Prado. You'll get non-stop problems with the cv boots.

              Ive seen a later model massively lifted Pajero (independent suspension all round) with a decent sized diff drop in it and it looked like absolute sh*t with the front and rear diff looking like they were really close to the ground, in conjunction with the door sills of the car sitting 600-700mm off the ground. Wrong car for a suspension lift like that. To do that get a Patrol.
              Brett1979
              Avid PP Poster!
              Last edited by Brett1979; 03-04-2017, 08:52 PM.
              2005 120 series V6 Grande, 2 inch susp lift (King/EFS combo), 32 inch MT’s, Safari Snorkel, rear diff lock, breathers, Light Force spotlights, UHF, dual batteries.

              Comment


              • #8
                To be honest I can't see how the OD of a tire is going to make a difference here. Regardless of tire size the relationship between the axis of the shaft coming out of the differential and the shaft out of the wheel hub is the same. Tire size is only going to lift or lower the entire car by 1/2 of the difference in tire size.

                I am envious that you have lasted 4 years plus without and cv boot issues.

                In regards to your aftermarket CV's, I am told by my CV specialist that the oem CV's run a 6 lobe system and the aftermarket ones can be 3, so you you'd assume they aren't as strong. Just some food for thought. He also mentioned that the aftermarket ones typically don't work well at all with lifted vehicles as the the cups don't accommodate as much movement. Not saying yours will fall in either of these categories, just giving you something to keep an eye on.

                Comment


                • #9
                  So here is a photo of one of my CV boots. My actual problem is the bellows rubbing together and wearing through over time. My issue isn't from tearing them at due to stretch and stress.

                  Also spoke to my suspension guy yesterday and he has apparently fitted the diesel Dobinson kit in the from to cater for dual batteries, winch and steel bar as its slightly heavier duty. (I have the V6 Petrol)
                  Attached Files

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                  • #10
                    I had a 120 V6 with a 50mm OME lift . The car did 90000 km over 7 years like this and the original cvs, boots and shafts were still in it at 160000 when I sold it- no holes, tears etc. These kms included every major 4wd track in the country. Is this a 90 series or later?

                    Comment


                    • #11
                      Originally posted by 404pug View Post
                      I had a 120 V6 with a 50mm OME lift . The car did 90000 km over 7 years like this and the original cvs, boots and shafts were still in it at 160000 when I sold it- no holes, tears etc. These kms included every major 4wd track in the country. Is this a 90 series or later?
                      90 Series LWB

                      Comment


                      • #12
                        Originally posted by Oftda View Post
                        So here is a photo of one of my CV boots.
                        Why is the CV boot gathered at one end? It's a bit unusual.

                        Comment


                        • #13
                          I was having the same problem with my CV boots splitting approx every 6 months due to the ribs rubbing together. Found a good CV joint specialist who trialed a few different boots and stretched them a bit further down the CV shaft till they weren't rubbing anymore. Haven't had a blowout since. Was possibly a boot from a 100 series that he ended up on. I cant remember though.

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                          • #14
                            i only get them replaced with aftermarkets from local 4wd mechanic, i refuse to pay the 3x price toyota want for the same thing and then install on top of that. unfortunately i don't have the mechanical expertise to fit myself.

                            i don't have a problem with it, its not hard to deal with.

                            SAMUEL
                            [I]Maroochydore, Sunshine Coast, Queensland[/I]
                            1999 Toyota Landcruiser Prado RV 4cyl 2.7L Manual, Lifted 2-3" on Dobinson Springs & Shocks, Cooper STT Max Mud-Terrains in 235/85R16 all-round 32", Custom no Bullbar winch mount with Runva 11XP Winch, Black Sliders, 10000 Lumen, LED Lightbar

                            Comment


                            • #15
                              Originally posted by Oftda View Post
                              So here is a photo of one of my CV boots. My actual problem is the bellows rubbing together and wearing through over time. My issue isn't from tearing them at due to stretch and stress.

                              Also spoke to my suspension guy yesterday and he has apparently fitted the diesel Dobinson kit in the from to cater for dual batteries, winch and steel bar as its slightly heavier duty. (I have the V6 Petrol)
                              The aftermarket one I bought has 6 ribs which allows for more free movement. If I got a 3 rib one I'd be a bit annoyed too because they just look inferior in quality. Yours looks wierd how it's scrunched up at the end there.
                              I do my homework on the aftermarket parts I buy before I get them. All my new ball joints except for the rack ends have zerk fittings on them so they can have new grease pumped in them during service intervals.
                              Brett1979
                              Avid PP Poster!
                              Last edited by Brett1979; 05-04-2017, 06:26 PM.
                              2005 120 series V6 Grande, 2 inch susp lift (King/EFS combo), 32 inch MT’s, Safari Snorkel, rear diff lock, breathers, Light Force spotlights, UHF, dual batteries.

                              Comment

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