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Under hood insulation???

Discussion in 'The Garage' started by steve_kibbe, Aug 29, 2005.

  1. steve_kibbe

    steve_kibbe 1/2 ton status

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    I am in the process of prepping my truck for paint and wonder should I replace the insulation under the hood or leave it off.

    I'm in South Carolina, so extreme cold temperatures are not a concern.
     
  2. Emmettology 101

    Emmettology 101 3/4 ton status

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    I always pitch mine, even up here in the north! :D
     
  3. txfiremank5

    txfiremank5 1/2 ton status

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    Well, I think it has a couple of purposes. One, it insulates the hood from the heat of the engine to probably protect the paint on the outside of the hood. Two, it serves as a blanket to smother flames in the event of a fire, which is why it's held on with cheap plastic fasteners.

    So... I'd replace it, but that's just my opinion.
     
  4. spearchucker

    spearchucker 1/2 ton status

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    Very interesting. Never thought of that before but it makes sense. :thinking:
     
  5. txfiremank5

    txfiremank5 1/2 ton status

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    Yeppers, .. it's not a perfect system, but it helps... a lot. If nothing else, it will usually help keep it slowed down for a while until something else can be used to knock it down.

    It is also wise to replace them every so often. Otherwise it falls down on the fire, while it's also loaded up with grease and grime from years and years of being under there... which probably won't help much.
     
  6. steve_kibbe

    steve_kibbe 1/2 ton status

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    What about for a diesel? Same theory apply?
     
  7. txfiremank5

    txfiremank5 1/2 ton status

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    I would imagine so..

    I have made more gasoline vehicle fires, but still have been to a few diesel vehicle fires as well.
     
  8. diesel4me

    diesel4me 1 ton status Premium Member

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    Mine is greasy!

    The hood insulation on my 82 K20 diesel is SOAKED with grease and sludge!..I bet if my motor caught fire,it would be like throwing a gallon of diesel on the flames when it falls on the motor!..maybe I should rip it out!- :thinking: -its already got a few spots missing,and every time my head rubs against it,I come out looking like the "Fonz".. :doah: :( :mad: ..

    It takes forever for snow to melt off my diesel's hood too--but my 79 C10 without insulation melts it in 5 minites!--another good reason to ditch it!..I think it does help kill the noise from the diesel motor though.. :crazy:
     
  9. danny7139

    danny7139 1/2 ton status

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    Cost is $38 on lmc and serves good purpose for multiple reasons as stated before so it might be worth it
     
  10. BrianDamage

    BrianDamage 1/2 ton status

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    I remember reading either here or somewhere else that someone posted they had taken their insulation out and the heat from the motor caused the paint on their hood to bubble. :doah:


    I've had a couple cars with no insulation though and never had that problem :dunno:
     
  11. wazzabie

    wazzabie 1/2 ton status Premium Member

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    What is the insulation made of? Rather then paying LMC $38 could one make there own?
     
  12. txfiremank5

    txfiremank5 1/2 ton status

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    I've seen people use the reflective insulation that can be bought in rolls. Don't know how well it will put out a fire, but I'm sure it insulates just fine.
     
  13. steve_kibbe

    steve_kibbe 1/2 ton status

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    A lot of good points to consider.

    I was wondering because my DD doesn't have it, didn't come with it from the factory either. My 72 doesn't have any either.

    As for deadining the sound, I think thats a waste of time :D ever heard a 6.2 with dual glass packs and some tls's rolling down the interstate :yikes: :ears:
     
  14. jmd4x4

    jmd4x4 1/2 ton status

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    I dont think that hood insalation would help you very much on quiting that down. But I bet that sure is loud. :laugh:
    To bad you are far away from me because I am just about to take mine off and it is in good shape, and I would let you have it for cheap. :D

    later
    jmd
     
  15. BL1TZKRIEG

    BL1TZKRIEG 1/2 ton status

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    sorry for the noob question :D but what exactly is the insulation for ? I've heard if the engine catches on fire it will drop down and smother the fire.
     
  16. RootBreaker

    RootBreaker 3/4 ton status Premium Member

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    mine cought on fire!!!!!! it is gone now :haha:
     
  17. steve_kibbe

    steve_kibbe 1/2 ton status

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    This adds a new twist to it. :thinking: :thinking: :thinking:
     
  18. RootBreaker

    RootBreaker 3/4 ton status Premium Member

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    gotta realize one thing.... I didnt have an air cleaner :doah:
    was 17 and trying to see if i got better power.... but then backfire through carb... cought fire and I decided to put the air cleaner back on....
     
  19. camiswelding

    camiswelding 1/2 ton status

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    I replaced mine with aluminum bubble insulation....

    makes the engine compartment very nice looking, doesnt hold grease and oil, insulates better than the jute felt oil rag mouse stuff
     
  20. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    REMOVE IT! if it is old it will become flamable. it is fiberglass like thats in house but of a higher quality. i took mine off when i got the truck for my b-day and i live in the bay area where it has been 103*+ lately and no bubbles in the paint or anything like that. for an older vehicle it is much safer to remove it. i may only be 17 but i know what im talking about. trust me on this one. take it out
     

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