The Dynomat Debate - PeachParts Mercedes-Benz Forum

PanzerSD · #1 08-20-2006, 06:15 AM

Do you guys think that "DynoMat" or the equivilant reproductions, are good replacements/additions to the OEM Mercedes Sound deadening material?

My Hood pad is shot, and I plan on polishing my valve cover, and i know a new hood pad will rub on the cam sprocket bump...

I also plan to "restomod" the car and i'm going to have to remove all of the sound deading anyway, I'd like to use Dynomat and jute padding on the roof, floor and firewall....

So....Dynomat/equivilant, good or bad?

pawoSD · #2 08-20-2006, 10:19 AM

I don't remember there being a spot on my hood pad where the cam bump rubs....are you sure? The coolant cap does.....part of the black linkage cover on the valve cover does....

TheDon · #3 08-20-2006, 10:21 AM

if you want sound blocking and a thin pad i have this stuff called soundblock its used for sound deadening in houses but was told it would work in a car... its about 1/8" thick.. i might get a regular OEM hoodpad and glue this soundblock stuff on first then the hood pad..

Gil · #4 08-20-2006, 10:43 AM

Where did you find that stuff, Soundblock? Is it a good replacement for the hood pad? Mine is kinda blown out.

TheDon · #5 08-20-2006, 10:50 AM

Quote:

Originally Posted by Gil

Where did you find that stuff, Soundblock? Is it a good replacement for the hood pad? Mine is kinda blown out.

i found it at the International Home Builders show... im sorry its not called sound block but AcoustiBlock... they had a 15" subwoofer and a cylinder made of this stuff.. put the clylinder over the sub and it could not be heard..

acoustiblock.com

Wes Bender · #6 08-20-2006, 10:55 AM

On the W123s (and probably all MBs), if the hood pad is rubbing on the valve cover, the pad is coming loose.

Matt L · #7 08-20-2006, 11:10 AM

Quote:

Originally Posted by TheDon

if you want sound blocking and a thin pad i have this stuff called soundblock its used for sound deadening in houses but was told it would work in a car... its about 1/8" thick.. i might get a regular OEM hoodpad and glue this soundblock stuff on first then the hood pad..

Houses don't regularly get well above 120F inside when they sit in the sun. I'd avoid anything that isn't made for a car, and tested under extreme conditions.

OMEGAMAN · #8 08-20-2006, 11:37 AM

Has anyone bought this stuff? How much does it cost. This stuff and jute might make the 123 very quiet.

Matt L · #9 08-20-2006, 11:41 AM

It's quite expensive. I can't say if it's worth it, as I've never used the stuff. Having a quieter interior would be nice, but not worth the effort for me, even if the materials were free.

I think there's a link in the audio forum to a website listing tests of various competing products on the market. I consider it recommended reading, but it's probably well buried by now. You'll have to search.

TheDon · #10 08-20-2006, 11:51 AM

the acoustiblock could be used for the interior.. i have a 1 foot square sample and its pretty pliable, what about that sound blocking paint.. someone here painted the underside of the hood with it and then put the hood pad on

OMEGAMAN · #11 08-20-2006, 11:54 AM

Here are some photo's of the Jute I installed when I had the dash out. It made a difference. When I get some more time I will put some under the seats and in the trunk.

OMEGAMAN · #12 08-20-2006, 11:57 AM

Quote:

Originally Posted by TheDon

the acoustiblock could be used for the interior.. i have a 1 foot square sample and its pretty pliable, what about that sound blocking paint.. someone here painted the underside of the hood with it and then put the hood pad on

That was on the other forum. Go put that sample on your dash for a couple of days and see what the hot florida sun does to it. Cars do get a lot hotter than houses.

TheDon · #13 08-20-2006, 12:00 PM

Quote:

Originally Posted by OMEGAMAN

That was on the other forum. Go put that sample on your dash for a couple of days and see what the hot florida sun does to it. Cars do get a lot hotter than houses.

Quote:

Originally Posted by acoutsiblock.com

Automotive Sound Proofing *
Road noise and engine noise can be reduced greatly with Acoustiblok® when properly installed. The interior environment becomes much quieter and all audio systems, at low or high level, will perform noticeably better. It is unaffected by moisture, heat tolerant to 200º F and allows for easy application in doors, floor boards and interior fire walls. Unlike other soft tar like products Acoustiblok® sound proofing * materials will not compress with time or weight when used under the carpet. It easily cuts with shears or box knife. Tractor trailer cab floors and interior fire walls can be lined with Acoustiblok® for significant sound reduction.

it will work inside but i guess not the engine bay

Nate · #14 08-20-2006, 12:01 PM

use second skin... here's the website http://www.secondskinaudio.com/

Use some damplifier on the hood, it's rated to 450+ degrees... if your hood gets that hot, you've got more issues then your hood insulator falling off

cheaper then dynamat also, because they're newer to the market.

~Nate

PanzerSD · #15 08-20-2006, 12:28 PM

Quote:

Originally Posted by Matt L

Houses don't regularly get well above 120F inside when they sit in the sun. I'd avoid anything that isn't made for a car, and tested under extreme conditions.

Actually, if it's made for home use, it's probably tested to higher tempuratures than any car could achieve, Don't forget that building materials, do have to be tested under housefire conditions in order to meet UL fire code standards. So long as the GLUE you use to affix the stuff is rated for use on automotive roofs and vinyl tops...
We regularly use furnace insulation as replacement hood pads in my shop, because it's rated to withstand heat up to 2400* and it COMPLETELY fire resistant. if you have an engine fire, and you have this "insuation" the paint on the hood won't even blister...but it is EXPENSIVE