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07-17-2014, 04:29 AM | #1 |
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Join Date: Aug 2013
Location: Copenhagen
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Hole in radiator overflow pipe
Hi,
My radiator overflow pipe has a hole in a very unpleasant spot. Does anyone have an idea on how to fix it (see red arrow in picture)? I was thinking of some epoxy putty, but it is really difficult to work down there in that tight spot. Moreover I: Should I maybe accept the hole and leave it as is? I guess the hole results in a water level being approx 1 inch lower than normal. Would that be a problem? Moreover II: What would happen if I would fully close the overflow pipe on the outside by pinching it? Can water be relaesed through the cap - however it will not look so pleasant and beautiful? Lucas |
07-17-2014, 04:58 AM | #2 |
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Re: Hole in radiator overflow pipe
1" lower than normal? Probably not a problem. Maybe where you might run the water level just to minimize loss through the overflow pipe - if it were normal?
In this case I might try some electrical shrink tubing. Put on and use a small torch or heat gun to shrink the tubing. (Be careful that you don't melt the solder on the rest of the radiator.) Otherwise I think the only solution is to have the overflow tube replaced. This shouldn't be a big deal job since it likely can be done without removing the tank. (although the whole radiator will probably want to be brought into the radiator shop.) Joe K
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07-17-2014, 05:41 AM | #3 |
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Re: Hole in radiator overflow pipe
Thin wall brass tube with epoxy like JB pushed down the inside of the overflow pipe
you can get short lengths from hobby suppliers reducing the I D a small amount will not effect normal function Last edited by colin1928; 07-17-2014 at 05:42 AM. Reason: add |
07-17-2014, 12:05 PM | #4 |
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Re: Hole in radiator overflow pipe
DON'T pinch the overflow tube shut!!! You'll BLOW UP the radumator!! The radumator cap should be sealed TIGHT & WON'T release ANY pressure!!!!
Bill W.
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07-17-2014, 12:16 PM | #5 |
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Location: Illinois
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Re: Hole in radiator overflow pipe
Glue in a plastic McDonald's soda straw inside the tube. Use a glue like Seals All. This should be a long term temporary fix until you need other work done on the radiator and the excuse to replace this overflow tube..
If you do this and it works??? Then add this fix to the Farmer Fix thread. 51AVwFEje5L__AA160_.jpg |
07-17-2014, 04:30 PM | #6 |
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Re: Hole in radiator overflow pipe
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I have another radiator in worse condition but its overflow pipe seems OK, so I heated the joint with a torch and managed to get it out. Now I am speculating if I can remove the bad pipe from my radiator WITHOUT pulling the radiator out of the car ... and subsequently solder the other one in again. I am wondering if gravity is a problem. Lucas |
07-17-2014, 06:01 PM | #7 |
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Join Date: Feb 2011
Location: Lincoln, Nebraska
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Re: Hole in radiator overflow pipe
I've use a combination of cotton t-shirt material and silicone caulk to fix leaks in chest waders, vinyl water back packs for fire fighting, hot tubs and yes a leak in a seam of my AA radiator.
Clean it up best you can. Cut a piece of cloth a bit over size to cover the failed area and rub silicone caulk into the material really well totally saturating it. Lay it over the crack / hole, work it in and let it cure. Stays flexible and sticks to just about anything permanantly. You will never have to deal with it again.
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07-17-2014, 08:00 PM | #8 |
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Re: Hole in radiator overflow pipe
I would pull the radiator. It'll make the job easier and better.
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07-17-2014, 08:51 PM | #9 |
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Join Date: Jun 2010
Posts: 14
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Re: Hole in radiator overflow pipe
It appears that the overflow tube is too long ( sticks up too far ) and that is why the radiator cap hits the tube. I bet that's why it broke in the first place.
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