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Radiator leak - How to fix?

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Section59
Spanner Monkey



Joined: 05 Apr 2005
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PostPosted: 08:19 - 18 Mar 2011    Post subject: Radiator leak - How to fix? Reply with quote
Alright people.

Been a while since i've been on here but could use a little help if ya dont mind. Was out on the hornet the other day and stopped for a smoke, when i turned the bike off i heard a hissing, had a look and my radiator has developed a pinhole leak bottom right corner, probably a stone.

Anyway, any ideas on how to fix it on the cheap (its a 35k+ hornet with quite a few dings/corrosion etc etc) , or am i looking at a new rad? Sad
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DrDonnyBrago
World Chat Champion



Joined: 03 Jan 2010
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PostPosted: 08:37 - 18 Mar 2011    Post subject: Reply with quote
Mine is currently holed and repaired with araldite. It does a pretty good job if the area is properly prepped (corrosion removed, paint removed, dry and clean etc) and you allow it plenty of time to set.

You DO NOT want thered and white araldite, this is araldite rapid and will resemble chewing gum if you heat it up. You want the proper araldite that takes several days to set (blue and white) and can resist heat.

Alternatively, for a more professional repair there are many radiator repair shops around the country that charge around £30-£50 for repairs to holes. No idea what they would do to it mind (could well be an epoxy too).
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Section59
Spanner Monkey



Joined: 05 Apr 2005
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PostPosted: 08:48 - 18 Mar 2011    Post subject: Reply with quote
Cheers for the quick reply donny. Is this the one i need?

https://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_174578_langId_-1_categoryId_165691#dtab

May aswell try this before anything else. Like i say its a tatty old 1999 hornet, trying to spend as little as poss as its not worth much anyway! If that doesnt work i'll see about either getting mine re-cored (it is a bit battered) or find a 2nd hand one i can throw on!
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DrDonnyBrago
World Chat Champion



Joined: 03 Jan 2010
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PostPosted: 09:13 - 18 Mar 2011    Post subject: Reply with quote
That's the stuff, bangernomics the site for enthusiasts of crap cars suggests using it for radiator repairs too. If it doesn't work then you are no worse off Thumbs Up .

Drain the rad first though so that the area you are working on is completely dry inside and out, sand a patch a few cm around the hole to bare metal, mix the eopxy to the instructions and lather it on nice and thick, give it a day or two to cure then fill it back up.
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oggy
L Plate Warrior



Joined: 15 Feb 2011
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PostPosted: 13:50 - 27 Mar 2011    Post subject: Reply with quote
DonnyBrago wrote:
Mine is currently holed and repaired with araldite. It does a pretty good job if the area is properly prepped (corrosion removed, paint removed, dry and clean etc) and you allow it plenty of time to set.

You DO NOT want thered and white araldite, this is araldite rapid and will resemble chewing gum if you heat it up. You want the proper araldite that takes several days to set (blue and white) and can resist heat.

Alternatively, for a more professional repair there are many radiator repair shops around the country that charge around £30-£50 for repairs to holes. No idea what they would do to it mind (could well be an epoxy too).


Yes a professional repair would be better + it would get pressure tested before refitting. I've had so many rads that are bodged with liquid metal & cheap epoxy & they wonder why they leak soon after. Same with oil coolers when people think liquid metal will do. get the job done right first time with the right stuff
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