Best way to seal a leaky radiator fitting?
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Thread: Best way to seal a leaky radiator fitting?

  1. #1
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    Best way to seal a leaky radiator fitting?

    I'm building my first water cooling system, and had to jerry-rig the fitting that connects to the radiator (an old heater core). I'm using 3/8" Vinyl tubing, and the radiator used this wierd gasket and locking clamp that was decidedly non-standard- I discovered 1/2" Vinyl tubing fits tightly in the hole in the heater core, and the 3/8" Vinyl tubing fits tightly in it. I put it together as you see, with silicone sealer and model glue (the model glue seemed to bond the vinyl very well) except that the model glue joint leaks Before I liberally coat the whole damned thing with a ton of silicone sealer, are there any other recommendations as to how I could make this better? The water's not squirting or anything, just slowly seeping out (about a drop a minute)

    -click the pic for a 4mb divx of my sys so far... My water block and AXIA 1G should arrive by the end of the week Thanks!

    ------------------
    Asus A7V
    Duron 650@850@1.80V

    [This message has been edited by grover (edited 04-30-2001).]
    Pentium IV 2.4C Northwood- M0 stepping @ 3.2GHz HT
    Air Cooled w/ SP-94 heatpipe & 92mm Vantex Tornado at 45C
    4x256=1gb dual-channel 2-3-3-6 OCZ PC800DRAM @ 890MHz 3-4-4-8
    MSI Neo2-PLS w/I865PE & SATA @ 4x267=1068MHz
    BFG GeForceFX 5900@485/967MHz = 6284 3DMark2003s; dual-head 21" CRT & 19" LCD

  2. #2
    ol' man is offline workin fingas to the bone
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    You are in for a disaster if that is your true setup. Get a bigger hose to fit over your radiators inlet/outlet and hose clamp it down. At that point get a reducer and hose clamp that also so it will fit your smaller tubing.

    Letter (a) is what a reducer looks like. Harware stores have them. The picture below should give you a idea what I am speaking about.


    ------------------
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  3. #3
    ol' man is offline workin fingas to the bone
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    You don't want to glue tubing that needs to take even a small amount of pressure. Over time the stretching of your vinyl tubing would have let the smaller tubing go. The grey things are hose clamps. Always use them.

    If indeed you have silicone sealer on everything clean it off before doing what I have shown you.

    That heater core has a lip on it for a purpose, that is to hold your tubing from sliping off when the hose clamp is applied.

    Good Luck!

    ------------------
    800e@960mhz cBO_Sl1
    abit BE6-II
    256mb pc 133 2.2.2.
    32mb gf2-mx dual display
    Sparkle 300watt psu
    10gb maxtor ata66
    win2k
    100mb zipper
    52xcd-rom

    [This message has been edited by ol' man (edited 04-30-2001).]

  4. #4
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    Thanks!!
    Pentium IV 2.4C Northwood- M0 stepping @ 3.2GHz HT
    Air Cooled w/ SP-94 heatpipe & 92mm Vantex Tornado at 45C
    4x256=1gb dual-channel 2-3-3-6 OCZ PC800DRAM @ 890MHz 3-4-4-8
    MSI Neo2-PLS w/I865PE & SATA @ 4x267=1068MHz
    BFG GeForceFX 5900@485/967MHz = 6284 3DMark2003s; dual-head 21" CRT & 19" LCD

  5. #5
    ol' man is offline workin fingas to the bone
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    Your welcome, just make sure you clean everything up that has alot of silicone on it. SPOTLESS!!!!!

    Also make sure the reducer is plastic as it may help cause corrosion in you system if it is made from brass. Also use highly distilled water for coolant mix.
    ------------------
    800e@960mhz cBO_Sl1
    abit BE6-II
    256mb pc 133 2.2.2.
    32mb gf2-mx dual display
    Sparkle 300watt psu
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    100mb zipper
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    [This message has been edited by ol' man (edited 04-30-2001).]

  6. #6
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    I did the same thing on my pump 1/2 to 3/8. I used Petroleum Jelly (oil based) to seal it then used some 50 cent clamps to hold it together.

    ------------------
    It said "requires Windows 95 or better," so I installed Linux.
    It said "requires Windows 95 or better," so I installed Linux.

  7. #7
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    You mean same thing like I did, or ol' man did, warhorse?

    Ol' man- I couldn't find any reducers when I was at Lowes before- all they have are splice connectors. Do I need to make one out of several pipe fittings, etc? It's such a PITA to find the right fittings...
    Pentium IV 2.4C Northwood- M0 stepping @ 3.2GHz HT
    Air Cooled w/ SP-94 heatpipe & 92mm Vantex Tornado at 45C
    4x256=1gb dual-channel 2-3-3-6 OCZ PC800DRAM @ 890MHz 3-4-4-8
    MSI Neo2-PLS w/I865PE & SATA @ 4x267=1068MHz
    BFG GeForceFX 5900@485/967MHz = 6284 3DMark2003s; dual-head 21" CRT & 19" LCD

  8. #8
    ol' man is offline workin fingas to the bone
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    Originally posted by warhorse:
    I did the same thing on my pump 1/2 to 3/8. I used Petroleum Jelly (oil based) to seal it then used some 50 cent clamps to hold it together.

    Grover he means like how I said. He then used 50 cent hose clamps to hold it together. You must be at the wrong store. Go to a Minards or Fleet Farm. That is if you have them. Minards is the best!

    ------------------
    800e@960mhz cBO_Sl1
    abit BE6-II
    256mb pc 133 2.2.2.
    32mb gf2-mx dual display
    Sparkle 300watt psu
    10gb maxtor ata66
    win2k
    100mb zipper
    52xcd-rom

  9. #9
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    Next time I boot to Windows and I can use the camera software thingy I'll post them.

    ------------------
    It said "requires Windows 95 or better," so I installed Linux.
    It said "requires Windows 95 or better," so I installed Linux.

  10. #10
    ol' man is offline workin fingas to the bone
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    Usually anytime you find two higher pressure hoses spliced together they are done so with 2 hose clamps and a fitting with two male ends that fit inside the hose. The very bottom pic shows this. Take my advice grover you won't go wrong. The last thing you want is water all over everything and your computer. If you are really having that hard of a time goto the local radiator shop and ask them real quick what to do. You will find it will be the same as what I have told you.

    See this pic. They put the tube on the outside for a reason!!!!



    This is similar to what I am talking about for the reducer except both male ends are the same size. You obviously need one that is larger on one end to accomodate your heater core hose then reduce it too a smaller size.


    ------------------
    800e@960mhz cBO_Sl1
    abit BE6-II
    256mb pc 133 2.2.2.
    32mb gf2-mx dual display
    Sparkle 300watt psu
    10gb maxtor ata66
    win2k
    100mb zipper
    52xcd-rom

  11. #11
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    Gotcha If all else fails, I'll just cut off the offending fixtures and sweat in a 3/8 stiletto, but hopefully Home Depot will have the reducers. Lowes had a huge array of fittings, but very little was of any use to me...
    Pentium IV 2.4C Northwood- M0 stepping @ 3.2GHz HT
    Air Cooled w/ SP-94 heatpipe & 92mm Vantex Tornado at 45C
    4x256=1gb dual-channel 2-3-3-6 OCZ PC800DRAM @ 890MHz 3-4-4-8
    MSI Neo2-PLS w/I865PE & SATA @ 4x267=1068MHz
    BFG GeForceFX 5900@485/967MHz = 6284 3DMark2003s; dual-head 21" CRT & 19" LCD

  12. #12
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    I was unable to find 3/8 and 1/2 male adapters. They were not even listed on the spec sheets, so I don't think they are made, at least at the hardware places I looked.

    ------------------
    It said "requires Windows 95 or better," so I installed Linux.
    It said "requires Windows 95 or better," so I installed Linux.

  13. #13
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    In the first picture, you can see a 3/8 tube coming out of a 1/2 tube with two clamps on it and Petroleum Jelly inside it as sealant. It used to leak when it was just friction, but it doesn't anymore.

    In the second picture you can see better what the clamps look like. You squeeze them together with pliers and they open up. Also, notice the clamp on in the middle of one of the tubes. The tube had bent 90 degrees, so no water was going in. Putting the clamp there put enough pressure on it for the tube to round out again.




    ------------------
    It said "requires Windows 95 or better," so I installed Linux.
    It said "requires Windows 95 or better," so I installed Linux.

  14. #14
    ol' man is offline workin fingas to the bone
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    Well maybe I should go into the buisness of selling water cooling parts I can find all the things about which I speak quite easily. I can even find plastic ones too.

    Another little piece of advice about those vinyl hoses. You can heat them and stretch them over something with the same OD quite easily and even bigger ODs than the hose if you heat the hose up enough. It will not hurt the hose at all. I have done this and it isn't hard, it just takes some patience.

    This is a list of barbed splicers like the above pic. Notice how they have some that are reducers. 3/8" to 1/4", 5/8" to 1/2", etc......


    Couplings "Splicers" (barb x barb):
    1/8" barb #BA-C22 $1.18
    3/16" barb #BA-C33 $0.96
    1/4" barb #BA-C44 $0.84
    5/16" barb #BA-C55 $0.95
    3/8" barb #BA-C66 $0.78
    3/8" barb x 1/4" barb #BA-C64 $1.99
    1/2" barb #BA-C88 $1.09
    5/8" barb #BA-C77 $1.54
    5/8" x 1/2" #BA-C78 $2.59
    3/4" barb #BA-C99 $1.96
    3/4" barb x 5/8" barb #BA-C98 $3.73

    I would say your best bet would be the 5/8" to 1/2" reducer. A 5/8" hose should fit over that lip on your radiator. If it is too loose don't worry. Simply tighten down the hose clamp and it will tighten up nicely. A little heat would also help this to happen here also. Now once you have this tight put the 5/8" to 3/8" reducer in the 5/8" ID hose and tighten down the second hose clamp. Now take your 3/8 ID hose and heat it up a bit and force it over the reducer. It should go, you may need to use some "petroleum jelly/water/lube, as I thought warhorse was explaining " Now tighten up the last hose clamp and you should be set.


    These can be found at the below url.

    http://www.plumbingsupply.com/barb.html

    Also with a clamp like on the above oil cooler(hose clamp) you can reduce a hose to a smaller dimension also even if it fits too loose to even fit right.

    These are hose clamps.


    They come in any size you can think of.

    Here is a picture of a reducer and other hose items.



    If you really can not find one tell me the exact dimensions and I could!

    One other thing? How strong is your pump and how close do you plan on having your radiator to your computer?

    With these things considered I would make it real good and make sure it won't leak ever and can't be pulled apart easily.

    ------------------
    800e@960mhz cBO_Sl1
    abit BE6-II
    256mb pc 133 2.2.2.
    32mb gf2-mx dual display
    Sparkle 300watt psu
    10gb maxtor ata66
    win2k
    100mb zipper
    52xcd-rom

    [This message has been edited by ol' man (edited 05-02-2001).]

  15. #15
    ol' man is offline workin fingas to the bone
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    I hope I have filled your request here.

    Before I liberally coat the whole damned thing with a ton of silicone sealer, are there any other recommendations as to how I could make this better?
    Just ask and I will find the parts you need. You pay for them and shipping. Although that should be less than 5 bucks. I would hate to hear about your system taking a dump cause of a water leak. E-mail me if you need this.

    O yeah I missed what you said above. Yes you can use more than one fitting to make it work. Be creative. You never made brass fitting pot pipes when you were a kid or what

    ------------------
    800e@960mhz cBO_Sl1
    abit BE6-II
    256mb pc 133 2.2.2.
    32mb gf2-mx dual display
    Sparkle 300watt psu
    10gb maxtor ata66
    win2k
    100mb zipper
    52xcd-rom

    [This message has been edited by ol' man (edited 05-02-2001).]

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