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High temp spray paint for exhaust?

Discussion in 'Technical Chat' started by MHARMS, Oct 19, 2017.

  1. Oct 19, 2017 at 7:13 PM
    #1
    MHARMS

    MHARMS [OP] Well-Known Member

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    Thoughts on spray painting exhaust? Is it worth the effort? I spray fluid film on everything else so my exhaust is really the only thing rusting.
     
  2. Oct 19, 2017 at 7:19 PM
    #2
    panardo

    panardo Active Member

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  3. Oct 19, 2017 at 7:22 PM
    #3
    whalers25

    whalers25 Active Member

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    I've always wondered about this.
     
  4. Oct 19, 2017 at 7:23 PM
    #4
    MHARMS

    MHARMS [OP] Well-Known Member

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    It’s a rust/corrosion preventative film that stays wet until you wash it off. Sprayed it everywhere under the truck giving extra attention to the frame and leaf springs. If you spray it on the exhaust, it will burn off slowly and it’s pretty stinky, but not harmful.
     
  5. Oct 19, 2017 at 7:24 PM
    #5
    757yotas

    757yotas Well-Known Member

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    ICI Magnum front bumer Rigid LED lighting OME lift 285/70 Nitto Exos 17" Fuel Hostage TRD Exhaust TonnauPro Cover Oil Catch Can Tint Pioneer Nav system Sound System LED lighting Euro headlights Paint
    I do it with rusoleum clear high heat engine paint. Only do clear cuz i have a SS TRD Exhaust that i dont want black lol
     
    MHARMS [OP] likes this.
  6. Oct 19, 2017 at 7:27 PM
    #6
    hx989

    hx989 Church of @ODNAREM - Pacific Northwest Chapter

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    You can paint your exhaust but I personally would not. Just replace it when the rust eats a hole. Painting it will increase temperature because the painted metal cannot radiate heat out as easily
     
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  7. Oct 19, 2017 at 7:30 PM
    #7
    757yotas

    757yotas Well-Known Member

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    ICI Magnum front bumer Rigid LED lighting OME lift 285/70 Nitto Exos 17" Fuel Hostage TRD Exhaust TonnauPro Cover Oil Catch Can Tint Pioneer Nav system Sound System LED lighting Euro headlights Paint
    Never heard anyone complain of this. Seems like a load of BS to me...engine paint is made more hight heat and engine parts. If it can take header heat im sure a cat back will be fine to.
     
  8. Oct 19, 2017 at 7:31 PM
    #8
    Toyoland66

    Toyoland66 Well-Known Member

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    That's fine, the heat should be going out the tailpipe not radiating all over your undercarriage.

    VHT makes header paint, that's what I used on the header and exhaust in my FJ40, but it's garaged and I don't put a lot of miles on it so not sure about durability.
     
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  9. Oct 23, 2017 at 9:13 AM
    #9
    stump jumper

    stump jumper Well-Known Member

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    Don't need high temp for tail pipes. I did my tail pipes in regular flat black. I was after appearance not rust protection. I wanted pipes to match tips.
     
  10. Oct 23, 2017 at 9:22 AM
    #10
    Clearwater Bill

    Clearwater Bill Retire from work, but not from life.

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    Do you have some infrared readings of painted vs unpainted you can share to demonstrate this?

    Obviously same pre-reading driving conditions and point of reading on the exhaust are required.
     
    ChemDawg likes this.
  11. Oct 23, 2017 at 9:30 AM
    #11
    zh137dz

    zh137dz Well-Known Member

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    too many lights
  12. Oct 23, 2017 at 9:32 AM
    #12
    zh137dz

    zh137dz Well-Known Member

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    This isn't true, and even if it were possible for rattle can paint to "suffocate" radiant heat this would actually be the preferred outcome in an exhaust situation so the heat is directed outboard and not into the bottom of your truck.
     
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