1. Welcome to 4Runners.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all 4Runner discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other 4Runner owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Dynamat hood liner

Discussion in '5th Gen 4Runners (2010-2024)' started by Foothills, Dec 30, 2022.

  1. Dec 30, 2022 at 8:22 AM
    #1
    Foothills

    Foothills [OP] New Member

    Joined:
    Nov 2, 2022
    Member:
    #29388
    Messages:
    274
    Wondering if any have put on a Dynamat hood liner #11905 or similar product and how that worked to reduce engine and road noise. Truck didn't come with hood liner and OEM Hood Insulation Pad #53341-35161 is about the same price as a similar Rolls Royce OEM part.
     
    Last edited: Jan 1, 2023
  2. Dec 30, 2022 at 8:26 AM
    #2
    PVT Pablo

    PVT Pablo

    Joined:
    Mar 10, 2016
    Member:
    #1694
    Messages:
    2,360
    First Name:
    Paul
    Kitsap County, WA
    Vehicle:
    2016 4Runner TRD Pro
    Hood liner can be found online for around $185, cheapest I found was $170ish with coupons. A comparable amount of Dynamat would probably run about that. Probably better off just going OEM. Also I would be leary of running Dynamat above a hot, vibrating engine.
     
    Foothills[OP] likes this.
  3. Dec 30, 2022 at 9:16 AM
    #3
    Foothills

    Foothills [OP] New Member

    Joined:
    Nov 2, 2022
    Member:
    #29388
    Messages:
    274
    Thanks Pablo, Dynamat hood liner is 3/4" high temp acoustic foam lined with reinforced aluminum foil specific for engine bay, runs about $85 here through Amazon to the door, looks to be a quality product; https://www.dynamat.com/products/hoodliner/. Toyota OEM hood liner kit in this area costs about $600 ($781 CAD), don't know if I can get one shipped up from the US but I'll have a look.
     
    Last edited: Dec 30, 2022
    PVT Pablo likes this.
  4. Dec 30, 2022 at 12:49 PM
    #4
    ElectroBoy

    ElectroBoy Ad astra

    Joined:
    Jul 29, 2020
    Member:
    #15823
    Messages:
    2,002
    Gender:
    Male
    Bay Area, CA
    Vehicle:
    2018 ORP
    My concern wasn’t engine noise but the hood metal fluttered and vibrated at highway speeds especially if there was a cross wind. Maybe this is more noticeable with the models with a fake hood scoop.

    What I did was squirt polyurethane caulking everywhere there were hood-to-rib gaps to create more points of support for that thin hood metal. The larger gaps I filled with little closed cell foam blocks and then caulk. This stiffened the hood nicely and no more vibrations. Note that the polyurethane caulk needs several hours or overnight to cure and outgas.
     
    Last edited: Dec 30, 2022
    08TXRunner and Foothills[OP] like this.
  5. Dec 30, 2022 at 1:48 PM
    #5
    Foothills

    Foothills [OP] New Member

    Joined:
    Nov 2, 2022
    Member:
    #29388
    Messages:
    274
    Thanks EB thats a good idea for these floppy hoods, still want to add some sound barrier also.
     
  6. Dec 31, 2022 at 8:08 AM
    #6
    MAXIM

    MAXIM New Member

    Joined:
    Jan 6, 2020
    Member:
    #12593
    Messages:
    417
    Gender:
    Male
    I think Dynamat is too heavy for entire hood. I wouldn't do it. My factory insulation got moldy and dirty from hood scoop water. I replaced it with new one but installed clear film between the hood and insulation material (same protective film contractors use to cover carpet during construction available in many hardware stores) to direct water out of insulation instead of soaking it in. Stick it to the insulation not to the hood though to prevent moisture trapping. Second year with it and looks brand new and clean still.
     
    Foothills[OP] likes this.
  7. Jan 4, 2023 at 5:27 AM
    #7
    JT4RN

    JT4RN New Member

    Joined:
    Jan 4, 2023
    Member:
    #30416
    Messages:
    40
    Gender:
    Male
    First Name:
    John
    NY
    Vehicle:
    18OR
    Eibach Stage 2 lift. Pro front grill. Sound deaden doors, cargo area, and rear tailgate. Diode Dynamics fog lights. Anytime front camera connected to Kenwood head unit. Kicker sub and amp. GX rear bump stop and Energy Suspension front bump stop. FJ cruiser shift knob, rear molle panels, black paint climate control knobs. Trd Pro rack.
    I had this installed including dynamat doors and panels on my 2014 honda pilot. I did notice a slight improvement in engine noise with the hood liner. It does trap a little more heat and if you live in winter climate. It takes more effort to remove snow from the hood. If your looking to quiet things down just dynamat the doors and rear panels first.
     

Products Discussed in

To Top