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#599213 - 08/08/09 06:46 PM
Radiator Q
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Senior Member
Registered: 04/15/07
Posts: 88
Loc: Colorado, USA
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Hello all: I'm pulling my original radiator out and noticed that the little side metal vent tube coming out of the neck (to which the 1/4" rubber tubing connects)is loose; it doesn't come out but it rotates easily in my hand. Is that a design feature? I can see how it needn't be a pressure-tight fixed connection since it's supposed to be a vent port and it never comes into use unless 7lbs is exceeded in the system. But if it's supposed to be brazed tight I'll add it to the list of repairs. For what it's worth I note that the vent tube on my spare Denis Welch radiator (a long story, don't ask...) is brazed solid. Any ideas? Many thanks,
-Tom
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#599245 - 08/08/09 11:40 PM
Re: Radiator Q
[Re: TOC]
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Senior Member
Registered: 04/15/07
Posts: 88
Loc: Colorado, USA
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Right...But if the overflow tube (metal or rubber) doesn't become "active," i.e. doesn't actually vent anything until the radiator cap's spring is pushed up due to overload, i.e. +7lbs of pressure, it won't be leaking, and by definition if it's releasing pressure (>7lbs), coolant will/should (!) be releasing out the vent tube. What difference does it make if it's out a loose tube or the fixed vent tube?? I frankly don't care but need to know if this is the intended design.
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#599281 - 08/09/09 08:47 AM
Re: Radiator Q
[Re: TOC]
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Jedi Knight
Registered: 12/27/04
Posts: 1026
Loc: OZ
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should be a soldered/brazed item, you could use devcon or similar to rectify, and you could just add a push on flex hose to a collector bottle similar to todays cars if you are worried about it splashing around your pristine engine bay
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#599320 - 08/09/09 11:42 AM
Re: Radiator Q
[Re: zblu]
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Senior Member
Registered: 04/15/07
Posts: 88
Loc: Colorado, USA
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Many thanks for the replies. I need to have two other places brazed so I'll just add this to the list of fixes. Thanks again,
-Tom
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#599342 - 08/09/09 01:35 PM
Re: Radiator Q
[Re: 62BT7]
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SIlver Member
Jedi Knight
Registered: 12/21/01
Posts: 1352
Loc: St Louis, Missouri, USA
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Hello all: I'm pulling my original radiator out and noticed that the little side metal vent tube coming out of the neck (to which the 1/4" rubber tubing connects)is loose; it doesn't come out but it rotates easily in my hand. Is that a design feature? I can see how it needn't be a pressure-tight fixed connection since it's supposed to be a vent port and it never comes into use unless 7lbs is exceeded in the system. But if it's supposed to be brazed tight I'll add it to the list of repairs. For what it's worth I note that the vent tube on my spare Denis Welch radiator (a long story, don't ask...) is brazed solid. Any ideas? Many thanks,
-Tom Tom, yes it needs to be repaired. Take it to any radiator shop and have the radiator dipped and cleaned out, mention the tube and they'll probably fix it as part of the job.
_________________________
 Too fast for the slow lane, too slow for the fast lane.
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#599512 - 08/09/09 09:03 PM
Re: Radiator Q
[Re: Johnny]
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Jedi Hopeful
Registered: 02/08/09
Posts: 141
Loc: Spanaway,WA.USA
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Easy enough to silver-solder, w/propane torch, otherwise it'll make mess of engine-bay. I ran mine into a overflow can, less mess. cheers Genos2
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