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Thread: Under Hood Silencer Pad

  1. #1
    Senior Member HondaSUV Mentor
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    Default Under Hood Silencer Pad

    I have a 1st Gen w/ manual transmission. Now I love the sound of a 16 valve Honda doin' the job but for highway cruising, 3500-4000RPM for hours on end can get tiring at times. I am looking for a few ways to tone it down a might without having to run 50MPH on the interstate . One of the best ways would be to install an underhood pad. But I have yet to find one or anything to cobble together. Most of the stuff I am finding is for inside the car and said "not for use around engine." One thought was to buy a 2nd gen pad (I think they make one) and make it work, but that's a lot of $$$ to "customize" with a pair of scissors.

    Any ideas?
    2002 Ford Ranger (love my truck!)
    2000 CR-V EX Manual (great dog hauler, most "Civic Like" of all CR-V's, it's my baby!!)
    2003 CR-V EX Auto (more room, more power, more refinement, less quality, traded 4/2012)
    2012 Mazda5 Sport Auto (Why doesn't Honda built something like this?)

  2. #2
    FFNC Site AdminHondaSUV Elder Racoon's Avatar
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    I have a 1999 CR-V EX, which is mechanically identical to your 2000. I've done a lot of highway driving on long trips (Indy to Key West, Nashville to OBX to Key West, Nashville to Bar Harbor Maine, and others).

    My solution is to stop every 3-4 hours for fuel and to stretch my legs, and I turn the volume up on the radio.

    And, if you add some sort of sound absorption padding to the hood you'll still hear the engine through the firewall. And it won't do anything for the wheel/tire noise.

    If it were a problem for me I'd look at adding Dynamat or something similar to the interior to deaden all exterior noise.

    The Racoon

    White Diamond Pearl 2014 CR-V EX AWD (Gen 4)

    Accessories: splash guards, body side molding, moonroof visor, Weathertech Window Deflectors, Weathertech floor mats, Weathertech cargo tray

    Milano Pink 1999 CR-V EX 5 Speed (Gen 1.5) - SOLD at 127,997 miles
    Silver Moss Metallic 2006 CR-V EX 5 Speed (Gen 2.5) - SOLD at 86,647 miles

  3. #3
    Senior Member HondaSUV Mentor dgoff07's Avatar
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    Quote Originally Posted by Racoon View Post

    And, if you add some sort of sound absorption padding to the hood you'll still hear the engine through the firewall. And it won't do anything for the wheel/tire noise.

    If it were a problem for me I'd look at adding Dynamat or something similar to the interior to deaden all exterior noise.

    The firewall lets in TONS of engine noise . I have been looking for a good solution for a hood pad, but also came up short. After sound deadening my whole vehicle, I would say the hardest part was the firewall - not a pleasant experience - and it didn't quell much engine noise. Road noise is significantly reduced, but now the wind noise is unmasked and more noticeable.

    I think member "k24 rd6" has some sound deadening in his engine bay. Maybe he will chime in.
    2001 CR-V SE: 95,000 miles (SOLD) GALLERY!!!
    2008 Accord Coupe EX-L 5MT: 55,000 miles


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    Senior Member HondaSUV Mentor chiph's Avatar
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    I dynamatted my interior, but didn't do the firewall as I didn't want to get involved with removing the entire dash.

    Noise levels are lower, but since Dynamat (I used Extreme) is a vibration reducer, not a noise blocker, I think a two-pronged approach is needed -- Dynamat to stiffen the body/door panels, plus a noise padding on the floor.

    Chip H.

    Former owner of: 2012 Civic LX, 2006 Ridgeline RTL, 2000 Honda CRV EX

  5. #5
    Moderator HondaSUV Elder liquidfuel88's Avatar
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    Try Hoodliner by Dynamat. It's made specifically for use under the hood. Also putting Dynamat on the firewall will help, but will require removal of the dash.
    David
    173,454 miles on 1/17/11 ---The End---



    Euro Bumper | In-Dash Navigation | Webasto Sunroof | Photo Gallery

  6. #6
    Senior Member HondaSUV Mentor
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    The hoodpad/liner should reduce the noise coming through the firewall. The issue is that you have the noise reflecting off of the hood, much like a big "speaker." The experience from a lot of ther boards with everything from diesel pickups to civics has been that the hood pad does wonder.

    We'll see if the dynamat folks make anything.
    2002 Ford Ranger (love my truck!)
    2000 CR-V EX Manual (great dog hauler, most "Civic Like" of all CR-V's, it's my baby!!)
    2003 CR-V EX Auto (more room, more power, more refinement, less quality, traded 4/2012)
    2012 Mazda5 Sport Auto (Why doesn't Honda built something like this?)

  7. #7
    Moderator HondaSUV Elder sgtsandman's Avatar
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    You could try JC Whitney. They sell sound insulation and hood insulation. http://www.jcwhitney.com/autoparts/S...sku=hood+liner
    Mike: Sgtsandman's 'V
    2011 Ford Ranger XLT, 4X4 5 MT


    1999 Honda CR-V EX RT4WD 5 MT



  8. #8
    Senior Member HondaSUV Mentor
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    Quote Originally Posted by sgtsandman View Post
    You could try JC Whitney. They sell sound insulation and hood insulation. http://www.jcwhitney.com/autoparts/S...sku=hood+liner
    I did check JC's and all of their stuff said the heat limit was 140. I did go to Dynamat and they have where you can run their Dynamat xtreme with some sort of high dollar Reynolds Wrap over it, but it's main function is to reflect heat. I don't think the 2.0L engine gets all that hot, but I also don't think reflecting all of the heat back into the engine compartment would be the wisest thing in the world.

    The Dynamat xtreme is good for 300 degrees F which by itself which would do the trick. Unfortunately, what I have seen of Dynamat is that it's fairly expensive and, well, I'm a cheap skate. Perhaps I can find a remnant out on ebay or something.

    NOW...they also have a hoodliner that I guess you cut to size...it's $110 bucks and is reflective. I am not big on the reflective deal. It doesn't sound like a great idea.
    Last edited by bechtoea; 12-21-2008 at 07:02 AM.
    2002 Ford Ranger (love my truck!)
    2000 CR-V EX Manual (great dog hauler, most "Civic Like" of all CR-V's, it's my baby!!)
    2003 CR-V EX Auto (more room, more power, more refinement, less quality, traded 4/2012)
    2012 Mazda5 Sport Auto (Why doesn't Honda built something like this?)

  9. #9
    Senior Member HondaSUV Mentor chiph's Avatar
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    You also need to look at where you live. Summer temperatures in Phoenix plus a hot engine could mean that the adhesive lets go and the hoodliner falls on top of the motor.

    BTW, The Dynamat Extreme is worth the money.

    Chip H.

    Former owner of: 2012 Civic LX, 2006 Ridgeline RTL, 2000 Honda CRV EX

  10. #10
    Senior Member HondaSUV Elder blueiedgod's Avatar
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    Get a headunit with active noise cancelling feature. Honda Oddyssey is one source.

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