Dynamat in the trunk

cranzy

Hey everyone! While I'm waiting on my clutch to be shipped, I decided to isolate my trunk from all the road noise and mainly because of the Tomei exhaust I have. So far I've stripped the trunk, which took me around 20-30min because I had to look up where the pins are located at. Anyhow, I will keep updating this thread as I'm making progress.

Dynamat: $150 from Amazon






Random bolt under the foam...




Next step: Cleaning.

Merv

Do they recommend anything,or just soap and water?

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Swift springs | upgraded headlights | stillen gen3 cai | FI HFC's and FI CBE | ecutek tune in the mail!

cranzy

Yes. I vacuumed, cleaned with a wet towel, and then rubbing alcohol. The surface has to be clean in order for the dynamat to stick well. You don't have to clean as much as me if your trunk is somewhat clean. I'll recommend rubbing alcohol though.
Here is the result.



Next step: Putting the dynamat(which I've already started). I'll try to finish today after work.

darkphantom

Nice! I have been meaning to do this but don't want to spend that much on dynamat - I've heard there are better alternatives.

Just irritated by road noise, luckily the Ark CBE isn't that loud on normal driving

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'13 PW M6 | Takeda | ARK GRiP V2 | H&R

cranzy

I hear you. But for $150 I'd rather try to isolate as much as I can. I even measured the decibels in my car at idle(low 20s). So I'll compare afterwards and let you know.

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Chuck33079

If you put a layer of closed cell foam over the dynamat you'll get a much better result. Google "ensolite". It's cheap, light and self-adhesive.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

JARblue

Dynamat is just a vibration dampener. The CCF is the stuff that actually helps with noise.

No need to pay for the Dynamat name. I used GTMat's Onyx product (they are local). It cost <$50 to do the entire hatch.

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darkphantom

You have a local contact? Send me a PM, I might pay them a visit or just an email - trying to get an idea of how much they charge? I might just do it myself on a saturday, though.

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'13 PW M6 | Takeda | ARK GRiP V2 | H&R

Chuck33079

This. It's really tedious, but not hard. I can imagine the labor on this being really high.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

cranzy

It took me 3 days x 2 hours every day after work. Now, the labor is simple enough, however it's tiring. You are either bending over the trunk or cutting the dynamat inside the trunk (unless you want to get out of it every time you need to cut something).

JARblue

How much sq ft do you want of which product? In addition to the Onyx butyl product I used, they also have a product called Quadro, which is essentially the Onyx butyl product with foam already adhered to it. Pretty convenient, but I have zero experience with it.

And btw, I did the install myself. So that price was just for the Onyx product I purchased, not any labor. I did my hatch install in approximately 6 hours with four 30 min breaks.

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darkphantom

No idea how much sq ft I need but I want to cover the rear fenders and trunk - that quadro stuff sounds like it has both the deadening and vibration material.

My other question is if we need to entirely cover everything? The CLD Tiles site mentioned just putting it in patchy spots as you don't need to cover everything - is that the same for this stuff?

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'13 PW M6 | Takeda | ARK GRiP V2 | H&R

cranzy

I'll first do the Dynamat and then if I'm not satisfied with the results I'll try what you suggested. Thanks for the tip!

Chuck33079

Honestly, why put the plastics back in to pull them out again? You'll be much happier in the long run if you drop $50 on some foam before you button everything up. It does much so more than the dynamat.

My back would not have given me the option to do this project twice. Leaning over the hatch for hours gets really old.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

cranzy

You are right. I'm not sure if I can post links here but is this the foam you are talking about? http://www.raamaudio.com/ensolite-iu...on-the-market/
I wonder if I can buy it locally instead of waiting to be delivered?

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