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DT125R FORUM

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  4. JB Weld Crankcase Fix

JB Weld Crankcase Fix

Scheduled Pinned Locked Moved Engine
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  • jimmydc98J Offline
    jimmydc98J Offline
    jimmydc98
    wrote on last edited by
    #1

    4BC9E86A-A0A1-4BB1-A527-02065F2163C9.jpeg

    Hello has anyone used JB Weld before and do you think it can repair this it’s on the crankcase where the oil drain screw is, I’ve order some off amazon and should be here Friday.

    Was wondering why I paid £40 for a bottom end seemed really cheap shat out the gearbox though I’ve got the selector and the selector forks but not the actual gears etc but there was loads of metal shavings in there I guess it could have drained all its oil over time and they kept running it as I know these gearbox’s are supposed to be indestructible.

    DT200WR 1997 - New Project
    DTR 125 1997 - The Bike That Got Stolen
    DTR 125 2002 - Project
    DT 125 LC 1986 - Old Bike

    CalumC S NINJAN 3 Replies Last reply
    0
    • jimmydc98J jimmydc98

      4BC9E86A-A0A1-4BB1-A527-02065F2163C9.jpeg

      Hello has anyone used JB Weld before and do you think it can repair this it’s on the crankcase where the oil drain screw is, I’ve order some off amazon and should be here Friday.

      Was wondering why I paid £40 for a bottom end seemed really cheap shat out the gearbox though I’ve got the selector and the selector forks but not the actual gears etc but there was loads of metal shavings in there I guess it could have drained all its oil over time and they kept running it as I know these gearbox’s are supposed to be indestructible.

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #2

      @jimmydc98 Was it not advertised as such?
      That's bang out of order.

      I bought something similar years ago

      alt text

      Bought a working engine only to find the connecting rod shot through the bottom end ruining the cases.

      I managed to get good money off the engine mind you, enough to get new cases.

      I would just get it welded up properly if it were me.

      Remember the cases will expand and contract with heat. So eventually it will crack again.

      Always Originate, Never Pirate!

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      • jimmydc98J jimmydc98

        4BC9E86A-A0A1-4BB1-A527-02065F2163C9.jpeg

        Hello has anyone used JB Weld before and do you think it can repair this it’s on the crankcase where the oil drain screw is, I’ve order some off amazon and should be here Friday.

        Was wondering why I paid £40 for a bottom end seemed really cheap shat out the gearbox though I’ve got the selector and the selector forks but not the actual gears etc but there was loads of metal shavings in there I guess it could have drained all its oil over time and they kept running it as I know these gearbox’s are supposed to be indestructible.

        S Offline
        S Offline
        SpookDog
        wrote on last edited by
        #3

        @jimmydc98

        Get it tig welded. Try any garage, engineering firm. They’ll probably do it for the price of a beer...

        1 Reply Last reply
        2
        • jimmydc98J jimmydc98

          4BC9E86A-A0A1-4BB1-A527-02065F2163C9.jpeg

          Hello has anyone used JB Weld before and do you think it can repair this it’s on the crankcase where the oil drain screw is, I’ve order some off amazon and should be here Friday.

          Was wondering why I paid £40 for a bottom end seemed really cheap shat out the gearbox though I’ve got the selector and the selector forks but not the actual gears etc but there was loads of metal shavings in there I guess it could have drained all its oil over time and they kept running it as I know these gearbox’s are supposed to be indestructible.

          NINJAN Offline
          NINJAN Offline
          NINJA
          wrote on last edited by
          #4

          @jimmydc98 As @jimmydc98 says you would be far better off getting it TIG welded, as that would be a much stronger and more durable fix. I've used several JB weld epoxy's / adhesives and have never found them to be any good. They do not seem to stick or repair stuff as stated, so I would steer well clear of them. I have tried this stuff tho and can recommend it;

          https://www.ebay.co.uk/itm/VersaChem-Steel-Weld-Epoxy-Black-2hr-Set-25ml-47709-VC-Automotive-Industrial/362460351914

          The TIG welding would be your best bet tho IMO. 😉

          SEDUCED BY THE DARK SIDE!!!

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