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Radiator Overflow Tank Options

Discussion in 'Early CJ5 and CJ6 Tech' started by Snoops, Nov 14, 2020.

  1. Nov 15, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
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    Timgr,
    Yes Sir........ That's the one I got from our FLAPS. Different styliee , but from Dorman.

    * Note: to All . This works as sorta , kinda, an expansion tank. The hose goes in the bottom. Hot coolant overflows to the reservoir tank. When it cools , it creates a siphon to draw it back thru to the radiator.
     
  2. Nov 15, 2020
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    Even if you do over fill it, it will flow out until it reaches its desired level. Mine just looses some somewhere where I never see evidence but during summers it will get low on its own and then starts to run a little hotter, I add a little and goes back to normal for the next couple months, depending on how much I’m driving it. Not really a big deal, but just not as new cars in that respect.
     
  3. Nov 15, 2020
    scott milliner

    scott milliner Master Fabricator

    Seattle Wa.
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    Dec 17, 2002
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    Found an early photo of mine. I just bolted the metal cage to the inner fender.
    [​IMG]
     
  4. Nov 15, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Have you got a 7# cap on yours? Assuming you're not finding any trace of moisture in the oil, how about the exhaust. Any signs of moisture coming out of it?
     
  5. Nov 15, 2020
    Jw60

    Jw60 Chim chiminey Chim chim cher-ee!

    Sedalia MO.
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    Oct 5, 2018
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    Regular cap. Hose to bottom of recovery tank.
    Your recovery tank just needs to be big enough for whatever your system needs.
    Otherwise it will still cycle over the recovery capacity then pull the recovery empty and have air In the radiator
     
  6. Nov 15, 2020
    Oldriginal86

    Oldriginal86 Member

    Pasadena, Md.
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    Nov 5, 2014
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    The main reason for a recovery bottle is to keep air out of the cooling system. Air promotes oxidation which causes deterioration of cooling system components.
    Modern standard radiator caps all have the vacuum valve necessary for a recovery system.
     
  7. Nov 15, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Never considered the air that would be in an older system.
     
  8. Nov 15, 2020
    SFaulken

    SFaulken Member

    Marysville, WA
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    IMG_20201115_132620-1.jpg IMG_20201115_132627-1.jpg Sorry it took me a few, here's some pics of the catch can I use.
     
    Jonbbrew and Fireball like this.
  9. Nov 15, 2020
    Snoops

    Snoops Getting closer!

    Idaho
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    That bottle looks like a clean install, I like how little room it takes up. Thanks for the pics
     
  10. Nov 15, 2020
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    That’s what I’m tellin ya. It just slowly disappears. I’ve looked everywhere. I've even laid out paper towels trying to catch a glimpse. It's magic, OR the wife sneaks out in the middle of the night every once in awhile and takes a little out. I’ve even hidden a camera behind my crescent wrench trying to catch a shot, but no luck so far. But I believe she's behind the mystery. I’m thinking I need to move the camera to a better hiding place. Maybe behind the hammer. She’ll never think to find it there.
     
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  11. Nov 15, 2020
    Downs

    Downs Member

    Hunt County Texas
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    Most likely it's a small leak around a hot part of the engine and it evaporates before it ever gets to the ground.
     
  12. Nov 15, 2020
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    You didn't say you have an overflow catch bottle so why not at least set up some kind of temporary one?
     
  13. Nov 15, 2020
    45es

    45es Member 2019 Sponsor

    Naches, WA
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    I'm cheap. I made my overflow tank out of PVC pipe and fitting. I also add a site glass to be able to check fluid level in the tank. I may have invested $10.00 to build it.

     
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  14. Nov 16, 2020
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    I made one out of an old metal water bottle and a bicycle water bottle mount I had laying around. Even put a sight tube in it. I think I'm in it around $10 as well.
     
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  15. Nov 16, 2020
    SFaulken

    SFaulken Member

    Marysville, WA
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    Yeah, I think that bottle cost me about $30, plus freight, but I'm sure I was ordering more than just that, so the freight really doesn't figure into it for me.
     
  16. Nov 20, 2020
    ziv

    ziv Member

    Israel
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    Twin2 likes this.
  17. Nov 20, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
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    X2......the answer.
     
  18. Nov 21, 2020
    sterlclan

    sterlclan Member

    exploring the...
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    gutted an old fire extinguisher and used that
     
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  19. Nov 22, 2020
    boopiejones

    boopiejones Member

    California east bay
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    E6F99AC5-372E-4B2D-8EB1-9012E5AC6AB8.jpeg
    I was considering one of those big cans of malt liquor. It’s cheap enough that I could just dump the booze and use the can. But I had a sailor Jerry bottle lying around so I used that.
     
  20. Nov 22, 2020
    Lockman

    Lockman My " Rosie" 2020 Sponsor 2019 Sponsor

    White City, NY 14617
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    The piece of ReBar is a nice touch , also. :lol:
     
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