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potential overheating problem

Discussion in 'Early CJ5 and CJ6 Tech' started by hayekfan, Apr 9, 2011.

  1. Apr 9, 2011
    hayekfan

    hayekfan 1967 CJ5, V6, OD

    Topsfield, Mass
    Joined:
    Jan 2, 2011
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    85
    Finally putting some miles on my '67 V6 today. Temp gauge moving near hot range at end of drive. Jeep has new radiator, water pump, thermostat, new antifreeze. No apparent leaks or water loss. Drive was on secondary roads, nothing over 50 mph. What else could cause overheating?
     
    hayekfan, Apr 9, 2011
    #1
  2. Apr 9, 2011
    jc588

    jc588 Member

    Ruston, La
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    Jun 24, 2009
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    159
    Got a shroud behind your radiator?
     
    jc588, Apr 9, 2011
    #2
  3. Apr 9, 2011
    hayekfan

    hayekfan 1967 CJ5, V6, OD

    Topsfield, Mass
    Joined:
    Jan 2, 2011
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    85
    No shroud. Will look into that.
     
    Last edited: Apr 9, 2011
    hayekfan, Apr 9, 2011
    #3
  4. Apr 9, 2011
    Jim302

    Jim302 Banned

    Morrisville PA
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    Jan 4, 2011
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    71
    I don't have a shroud on my V6. Even before I re cored the radiator, as long as I am moving, I am fine.


    headers? timing ported or vacuum? what is you timing at? did you spend a lot of time sitting still?
     
    Jim302, Apr 9, 2011
    #4
  5. Apr 9, 2011
    lamar

    lamar Member

    greenville sc
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    Jan 25, 2004
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    327
    You need to verify that it may be running hot, you may have an inaccurate gauge and it is running normal temp.
     
    Last edited: Apr 9, 2011
    lamar, Apr 9, 2011
    #5
  6. Apr 9, 2011
    hayekfan

    hayekfan 1967 CJ5, V6, OD

    Topsfield, Mass
    Joined:
    Jan 2, 2011
    Messages:
    85
    Stock headers, stock ignition, kept moving, no traffic.

    I'm a little suspicious of the stock temp guage, will check temp next.

    Wayne
     
    hayekfan, Apr 9, 2011
    #6
  7. Apr 10, 2011
    colojeepguy

    colojeepguy Colorado Springs

    At the foot of...
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    Mine never overheated, but tended to run pretty hot when pulling hard in low range. I built my own fan shroud out of sheet metal to help alleviate this.
    I agree with the others about not trusting the stock gauge-double check it with another gauge before you get too carried away with anything else.
     
    colojeepguy, Apr 10, 2011
    #7
  8. Apr 10, 2011
    garage gnome

    garage gnome ECJ5 welder

    Western MA
    Joined:
    Jun 19, 2009
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    3,092
    :iagree: I did that, and it helped a ton.
     
    garage gnome, Apr 10, 2011
    #8
  9. Apr 10, 2011
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    Nov 27, 2006
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    2,793
    what temp thermostat did you put in?
     
    1960willyscj5, Apr 10, 2011
    #9
  10. Apr 10, 2011
    hayekfan

    hayekfan 1967 CJ5, V6, OD

    Topsfield, Mass
    Joined:
    Jan 2, 2011
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    85
    Thermostat is a 190 degree. I've read that running a 160 is a mistake and doesn't help with overheating. Here in New England, the usual is a 180 or 190.
     
    hayekfan, Apr 10, 2011
    #10
  11. Apr 10, 2011
    Jim302

    Jim302 Banned

    Morrisville PA
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    Jan 4, 2011
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    As stated before check out your gauge.

    A 180 might put you in the right range of your gauge. I am a fan of a 194 thermostat myself.

    Is it a cheap thermostat? I have seen them fail in under a week. But, I keep using them.
     
    Jim302, Apr 10, 2011
    #11
  12. Apr 10, 2011
    Jim302

    Jim302 Banned

    Morrisville PA
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    Jan 4, 2011
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    I would love a picture. This summer I could potentially get stuck in PRNJ Shore traffic.
     
    Jim302, Apr 10, 2011
    #12
  13. Apr 10, 2011
    colojeepguy

    colojeepguy Colorado Springs

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    I dont really have a good pic of it, and you cant see much with it installed. Basically I just started messing around with cardboard till I came up with a template that would work, then cut it out of sheet metal. Mine is 3 pieces, left & right & bottom. The whole thing unbolts so it's easy to remove.
     
    colojeepguy, Apr 10, 2011
    #13
  14. Apr 10, 2011
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    What are you using for a fan? Electric or mechanical? And how large?:hurrican:
     
    1960willyscj5, Apr 10, 2011
    #14
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