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Radiator Bath Home Remedy

Discussion in 'Early CJ5 and CJ6 Tech' started by jayhawkclint, Jan 7, 2011.

  1. Jan 7, 2011
    jayhawkclint

    jayhawkclint ΜΟΛΩΝ ΛΑΒΕ

    Oklahoma City, USA
    Joined:
    May 18, 2006
    Messages:
    2,622
    I bought a late CJ radiator recently for swap into my early pending an upcoming engine conversion. The radiator was in good shape, except for some scale buildup inside. Went to Depot and picked up a gal of ZEP brand Calcium Lime Rust remover, and a 1-1/2" rubber cap and clamp from the sewer repair section. Also had CLR there, but was twice the cost and I am cheap. Man this stuff works good!

    Capped the lower fitting on the radiator and poured the gal in undiluted. Let it sit for 30 min, then with the radiator capped, shook it up a bunch. Poured it out into a bucket, then brushed the outside using the wife's dish cleaning brush (shhh!). Hosed it off inside and out. Done.


    Total cost: $13
     
    Last edited: Jan 7, 2011
  2. Jan 7, 2011
    Posimoto

    Posimoto Hopeless JEEP Addict

    Minden, Nevada
    Joined:
    Aug 7, 2003
    Messages:
    4,538
    That's a great tip, thanks.
     
  3. Jan 7, 2011
    kaiser_willys

    kaiser_willys Well-Known Member

    Joined:
    Jan 7, 2007
    Messages:
    1,524
    Zep makes some good stuff!!
     
  4. Jan 7, 2011
    Brem10mm

    Brem10mm Member

    Near Ames, IA
    Joined:
    Feb 15, 2010
    Messages:
    96
    I would recommend a pressure test before you complete the install. I've been down this road before using zep and CLR. Both do the job but.......used radiators are just that.....used.

    The price for a radiator shop to do a pressure test ranges from $14 to $30 here in central Iowa.
     
  5. Jan 7, 2011
    mainejeep

    mainejeep Member

    kenduskeag maine
    Joined:
    Dec 11, 2010
    Messages:
    226
    i used to work at a radiator shop all you really need to do is cap everything. get a small airhose that fits the drain port and apply no more than 25 lbs of pressure, and put it in a tank of water and look for bubbles that is all the radiator co. is going to do. mite save you 30 bucks
     
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