SN95 Under Hood Temps

Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by 90lxwhite, Jul 1, 2014.


  1. 90lxwhite

    90lxwhite Mustang Master

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    Other than a cowl hood is any recommendations on how to reduce under hood temperatures? Since the addition of the vortech it's getting pretty hot in there. The coolant temps aren't extremely high but some higher than they used to be. Yesterday was a fairly hot day and it ran about half with a 180* t-stat on the stock gauge where it used to run about 1/4 with the stock t-stat.
    I'm not trying to reduce IAT's just ambient heat I guess one would call it. What if I wrapped the head unit in some sort of heat blanket? Or is that a bad idea because I'd be "holding heat in" the head unit?
    #1
  2. 84Ttop

    84Ttop They make new pistons every day, so why worry? SN Certified Technician Mod Dude

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    I wouldn't try to wrap the head unit, you may wind up trapping more heat than you would be saving yourself. When you start leaning on the compressor (headunit) it will undoubtedly make some heat.
    Honestly other than a cowl hood I'm not sure there is much that you can do. I have always used a coolant additive such a water wetter and had decent results. That may help with the heat transfer of your coolant if you think it is running a little warmer now
    #2
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  3. 85rkyboby

    85rkyboby Active Member

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    WATER WETTER
    #3
  4. modulistic

    modulistic Member

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    do you run headers? can you wrap them?
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  5. RacEoHolic330

    RacEoHolic330 I like to dress like a pretty girl SN Certified Technician

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    Are you solely basing this off the stock temp gauge? I would get an aftermarket gauge before you start worrying about your underhood temps.
    #5
  6. mikestang63

    mikestang63 Mustang Master

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    I would not recommend any water wetter or other additive to your cooling system. They are known to cause problems with gumming up radiators and such.

    For additional cooling your options are

    cowl hood
    upgraded radiator
    E Fan
    upgraded water pump
    ceramic coated headers
    Intercooler

    Know that with a power adder, you are going to add additional heat under the hood. It's a trade off.
    #6
  7. 90lxwhite

    90lxwhite Mustang Master

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    Nah I'm basing it on the fact that even the hood prop is now hot as sh!t to the touch.
    Water Wetter is legit?
    Last edited: Jul 2, 2014
    #7
  8. 84Ttop

    84Ttop They make new pistons every day, so why worry? SN Certified Technician Mod Dude

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    I've had good success with it personally and have yet to see ill effects in 10+ years of using it
    #8
  9. 90lxwhite

    90lxwhite Mustang Master

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    #9
  10. 84Ttop

    84Ttop They make new pistons every day, so why worry? SN Certified Technician Mod Dude

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    I have always used it with straight water fwiw
    #10
  11. Mustang5L5

    Mustang5L5 Car used in adult film "Highway Gangbang-InDaButt" SN Certified Technician Founding Member

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    Water wetter is just non-foaming soap.
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  12. 84Ttop

    84Ttop They make new pistons every day, so why worry? SN Certified Technician Mod Dude

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    So I'm guessing that it would make crappy bubble bath? :stick:
    #12
  13. Mustang5L5

    Mustang5L5 Car used in adult film "Highway Gangbang-InDaButt" SN Certified Technician Founding Member

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    Well water wetter gets a bad rap these days but i haven't seen a solid scientific paper FOR or AGAINST it. It's basically non-foaming soap that reduces surface tension, but beyond that does it actually make a difference? Marketing says yes, actual testing is incolclusive.

    As for corrosion claims, if you use distilled or deionized water, you will have corrosion as the mineral free water absorbs surrounding metals. I can show you lab equipment I have here made of stainless steel that gets corroded from using DI water. I would not put that in my engine block.

    I neither support or oppose water wetter.....i support fixing the cooling system, not banddaiding it. (yes i realize that is not the topic of the OP's post)
    #13
  14. RacEoHolic330

    RacEoHolic330 I like to dress like a pretty girl SN Certified Technician

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    I'll be using spring water and BMW coolant in my setup. My research points to that as the best option for a street duty vehicle with aluminum parts.
    #14
  15. revhead347

    revhead347 I have face herpes.

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    I used to use water wetter and stopped using it. It made absolutely no difference in the temperature. So far the only way I have found to keep the water temp down is to run a bigger radiator, and a bigger thermostat. I strongly recommend against wrapping the headers. I made this mistake myself one time, and the headers rusted out really quickly.

    Kurt
    #15
  16. 90lxwhite

    90lxwhite Mustang Master

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    SiIcone hoses a gimmick?
    #16
  17. smkshw

    smkshw Active Member

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    i did all of those except the intercooler, temps on hot days are still 195-205 on my 331,never succeeded to get it down,i may try a dual fan set up
    #17

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