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DT125R FORUM

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  4. Bike seems to leak coolant from kickstand ??

Bike seems to leak coolant from kickstand ??

Scheduled Pinned Locked Moved Engine
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  • mbmO8M Offline
    mbmO8M Offline
    mbmO8
    wrote last edited by
    #23

    I had a spare head gasket from the gasket set I got from yambits I know it’s not Athena but I’ll order one up and it’s on now and seaming to be fine thank you lot

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    • mbmO8M Offline
      mbmO8M Offline
      mbmO8
      wrote last edited by
      #24

      And that didn’t last long …

      The gasket has started leaking already after maybe 80 miles. Going to order an Athena one later tonight and I was wondering if it would be worth skimming my head and barrel mating surfaces?

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      • CalumC Offline
        CalumC Offline
        Calum
        wrote last edited by
        #25

        Yeah, I've never had any luck with the pattern ones.

        Always Originate, Never Pirate!

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        • mbmO8M Offline
          mbmO8M Offline
          mbmO8
          wrote last edited by
          #26

          Is that not too uncommon for them to go that soon? As I’m starting to worry it could be something else causing them to fail so often

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          • CalumC Offline
            CalumC Offline
            Calum
            wrote last edited by
            #27

            Only use Athena, Genuine or Vertex head gaskets. The white ones blow straight away.

            Always Originate, Never Pirate!

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            • mbmO8M Offline
              mbmO8M Offline
              mbmO8
              wrote last edited by
              #28

              It was a black/gray one from a top end kit from yambits but even when I installed it it didn’t leak coolent but didn’t hold compression

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              • R Offline
                R Offline
                Rallyfinnen
                wrote last edited by
                #29

                I suspect the head or top of cylinder is not flat if you're having issues again and again. I would take cylinder and head to a machine shop or do it yourself if you have the equipment.

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                • mbmO8M Offline
                  mbmO8M Offline
                  mbmO8
                  wrote last edited by
                  #30

                  I think that will be the plan for now. I’ll get the barrel off and order new studs and I will check the reeds too

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                  • S Offline
                    S Offline
                    SpookDog
                    wrote last edited by SpookDog
                    #31

                    Have you lowered the coolant level in the expansion tank to the centre marking.

                    Also try measuring the head stud length that is protruding. Then again between the barrel top and washer with the dome nuts screwed down.

                    I’ve got the same problem with gaskets blowing. In my case it’s getting sucked into the chamber causing white - grey smoke.
                    Trouble is i don’t trust the local mom&pop engineer firms. The last job was a re honing shit show.
                    PJME skim heads?

                    S 1 Reply Last reply
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                    • S SpookDog

                      Have you lowered the coolant level in the expansion tank to the centre marking.

                      Also try measuring the head stud length that is protruding. Then again between the barrel top and washer with the dome nuts screwed down.

                      I’ve got the same problem with gaskets blowing. In my case it’s getting sucked into the chamber causing white - grey smoke.
                      Trouble is i don’t trust the local mom&pop engineer firms. The last job was a re honing shit show.
                      PJME skim heads?

                      S Offline
                      S Offline
                      SpookDog
                      wrote last edited by SpookDog
                      #32

                      PS Same issue, bottom of gasket is dry and the top has oily wet channels…

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