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leaky radiator - beyond Radweld

Radiator on the bike has sprung a leak for the 3rd time and this time it's a biggun. The leak is at the bottom of ...

  1. #1
    Really Bored melons's Avatar
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    Default leaky radiator - beyond Radweld

    Radiator on the bike has sprung a leak for the 3rd time and this time it's a biggun.

    The leak is at the bottom of the radiator, first fix worked by just pouring in a bottle of Radweld and topping up with water.

    6months later it went again, this time like a geyser. First bottle of Radweld went in and spewed out, 2nd bottle sealed the leak.

    2months later & it's gone again, geyser style again. Reckon it's past the Radweld fix stage so going to try sealant or putty this time. I realise i'll have to buy a new radiator eventually, but an OE one is 470 which by my reckoning is about 50% of the bikes value, ebays listing them at 330 which I'm not comfortable with either. Phoned FWR to see if they knew of a pattern version but they didnt and have invested about 6 (1.50 a minute phone service) with Partfinderuk.co.uk in the hope theres a bike breaker out there with a cheap replacement, but it'll be a couple of days before I find out.

    Halfords have a couple of options for sealing radiators, 'Evo-stik hard & fast metal epoxy putty' and 'Plastic padding leak fix', don't know which to try though

    Anyone tried either of these - are they any good?



    In the meantime I'll be leaving for work very very early & leaving very late so as to miss the traffic congestion and minimise the stop/starts that'll over heat the engine.


    Thanks
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  3. #2
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    Default Re: leaky radiator - beyond Radweld

    Get it braized. Mostly anyone that works with metal should be able to do it or know someone that can.
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    Default Re: leaky radiator - beyond Radweld

    specialist rad place should be able to fix it, especially if its ally, They are used to such jobs, and if its a decent outfit will be able to build an entire new rad if required. A mate of mine had a custom intercooler made for under 200 by such an outfit.
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    Not Much To Do Bigwizz's Avatar
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    Default Re: leaky radiator - beyond Radweld

    Quote Originally Posted by Big Pete View Post
    specialist rad place should be able to fix it, especially if its ally, They are used to such jobs, and if its a decent outfit will be able to build an entire new rad if required. A mate of mine had a custom intercooler made for under 200 by such an outfit.
    As Big Pete said ^^^

    Just be aware that trying to use some repair putty type stuff may make the job of fixing properly more awkward as all the putty will have to be cleaned off.
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    Should Get Out More a_morti's Avatar
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    Default Re: leaky radiator - beyond Radweld

    What's it for? Surprised you can't find one seconhand. If you like Bodging creative engineering, you can probably make most any rad fit more or less?
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    Not Much To Do oldgit's Avatar
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    Default Re: leaky radiator - beyond Radweld

    You could do worse than trying this:

    Welcome to K-seal.co.uk where you can purchase K-seal, Seal-up, & Quiksteel online...

    Way better than radweld, and both times I've tried it it worked really well (14 months and 2 years before selling the bike and car respectively).
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    Default Re: leaky radiator - beyond Radweld

    K seal works well up to a certain size hole; employee of mine tried it on an SV1000 but the damage was too great (fan had somehow worked loose, as it span it twisted its mount slightly and started to carve away at the back). Local specialist welders fixed the rad and sorted the fan for a reasonable price.
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    Not Much To Do rich-racing.co.uk's Avatar
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    Default Re: leaky radiator - beyond Radweld

    barrs leaks is better than radweld - they do one like a bar that you crumble,used it in my truck radiator (big leak) and it's lasted years.

    radtech are good - have had big race rads made there for reasonable money.

    call keith 01543 502525.

    got an R1 radiator for a few quid...
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    Should Get Out More Tomcat's Avatar
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    Default Re: leaky radiator - beyond Radweld

    Give these guys a ring. They normally fix MX radiators but I've seen some of the straightening and welding jobs they have done and they are miracle workers. FFS don't just slap some plastic shite all over it unless you want it to drop off halfway round a fast sweeper 500 miles from home.

    GMX Radiators - The UK's Number One for Alloy Motocross Radiators , Cooling and Starting Systems
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    Default Re: leaky radiator - beyond Radweld

    Any professional radiator repair company should be able to sort you out, a far better option than radweld/barseal as they can restrict internal flow in small core tubes as found in bikes.

    Best of luck Phil
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    Default Re: leaky radiator - beyond Radweld

    Guessing no-one's tried Evo-stik hard & fast metal epoxy putty' or 'Plastic padding leak fix' then

    Thanks for the replies, didn't even cross my mind about trying to get it brazed or re-conditioned.Did check the links and do a little Googling on this but but I'd rather not be without the bike for a week

    Didn't get a single response via Part finder (so far) but all of a sudden a less offensively priced radiator has popped up on ebay @ 265 which isnt a great deal more than the reconditioning prices i've seen and without the inconvenience of being without the bike for a week.

    So i'll try another quick fix using the evo-stik putty and another bottle of radweld (as they are both to hand) then if part finder doesnt come up trumps i'll probably bite the bullet & buy the one on ebay.


    Thanks all
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    Should Get Out More Tomcat's Avatar
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    Default Re: leaky radiator - beyond Radweld

    What's radweld doing to the cooling passages inside your engine?
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    Default Re: leaky radiator - beyond Radweld

    Quote Originally Posted by Tomcat View Post
    What's radweld doing to the cooling passages inside your engine?
    Good point. Thought it would only react to air (ie. where the hole is), but will do some Googling
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    Default Re: leaky radiator - beyond Radweld

    srsly - the other more expensive sealants are way better than radweld. i've had them last years.
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