fixing small holes in coolant overflow bottle

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by ADVill, Jun 22, 2014.

  1. ADVill

    ADVill Been here awhile

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    Very small, above coolant level. Ideas? Doesn't really 'leak'. Doesn't boil out. Losses a little coolant over time, most likely from hard right turns, leaned over.
    [​IMG]
    #1
  2. renogeorge

    renogeorge Let's ride!!

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    JB Weld
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  3. ADVill

    ADVill Been here awhile

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    Thinking the bottle will flex and the jb weld won't
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  4. Hill Climber

    Hill Climber Been here awhile

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  5. ADVill

    ADVill Been here awhile

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    May try that. Thanks.
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  6. johnno950

    johnno950 Long timer

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    my se cracked on the high level mark,i used liquid steel 2 part putty to seal it,worked a treat,i would of replaced the overflow bottle if leak was from base surface.
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  7. tinwelp

    tinwelp Professional Idiot

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    Probably the easiest and most reliable fix is to just replace it. Surely it's not that expensive? Or do you just need a solution now?

    I'd try common liquid Cyanoacrylate (super-glue), mixed with bicarbonate of soda. Yes, sounds bizarre, but it is remarkably effective at making repairs on semi-rigid plastics. Liquid glue works better than gel types.

    The tank must be super clean to ensure a decent bond, although the same's true for pretty much any adhesive. After cleaning with a solvent of your choice, coat the area you want to repair with a thick layer of super-glue. Sprinkle with bicarb, another layer of glue, another layer of bicarb, building up the layers until the hole is filled.

    It works and lasts well, and is almost free.

    Cheers... Paul
    #7
  8. gefr

    gefr Life is a trip

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    When in turns, liquids stay pretty much orthogonal to the axis of the bike. So coolant doesn't change level inside the overflow walls.
    Cheers.
    #8
  9. ADVill

    ADVill Been here awhile

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    Guessing I need to get a degree in hydrodynamics...
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  10. HeatXfer

    HeatXfer Bad knees

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    Isn't that tank made of polyethylene? I've only heard about specialized 'surface' adhesives (solvent types won't work on the stuff) or hot-air welding for repairs. :dunno
    #10
  11. Peanuts

    Peanuts Long timer

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    Part Number: 60035065000
    Description: WATER EXPANSION TANK 03
    Retail: $34.99
    Your Price: $33.24 (5% discount)

    Hardly worth the risk of a repair failing?
    #11
  12. ADVill

    ADVill Been here awhile

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    That is certainly THE fix but it doesn't leak. Filled it about 3,000 miles ago and that is the level now.
    #12
  13. Somewhere Far Beyond

    Somewhere Far Beyond The Narrator

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    What if the crack gets bigger, hmm? :umph


    Duct tape would be the po' man's fix. The kind that has the stronger adhesive. But they're cheap enough so I'd just replace it outright and be done with it. Pretty much same take as on keener's radiator leak issue. :deal
    #13
  14. ADVill

    ADVill Been here awhile

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    Seems to work:



    [​IMG]
    #14
  15. synkt

    synkt n00b

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    It should be made from high density polyethylene. The only thing that reliably sticks to polyethylene is more polyethylene ( worked in plastic fabrication for a few years). Hot glue as a filler and a hot butter knife to smear it around will solve the problem. I have patched bigger holes on tanks with that system.

    Sent from my SAMSUNG-SGH-I747 using Tapatalk
    #15