I just found out I have an inside track on buying dynamat at cost through a vendor I do business with. Question is, has anyone used it and report some results? I read the thread about using the Hardware flashing that appears to be close to the same stuff, but wanted some feedback on Dynamat specifically.

My plans would be to put it under the carpet and as high up the firewall as possible, inside the doors behind the speakers & window hardware, and behind the carpet up the sidewall where the jump seats are up to the window and across the back wall of the ext. cab part.

I just want to make sure this stuff will quieten down the truck, as that is my biggest complaint.

 

Save yourself a LOT of money and find an air conditioning repair buddy. Ask him to get you some sheets of Rubatex rubber insulation. It can be had in 1/4", 3/8", 1/2", 3/4", and 1" thicknesses. It's the same thing as the dynamat less the aluminum foil.

A 3'x4' sheet of 1/2" is about $18.

I lined my entire roof with 1/2" and the rear wall, sides of the cab, and doors with 3/8".

The floor is lined with 5/16" thick shredded rubber matting used for building rubber roof walkways.

MUCH less expensive and VERY effective.

Hope this helps.

 

Hey BC847,is that the same as the roofing stuff? I used some stuff one time without foil,it worked really good but it had a tar-like film on it.

 

I guess I should have waited tell this subject came up because I went with the Dynomat. It worked better than I thought it would. I don't have to yell any more when someoine is riding in the truck. I am a frim believer that if you want a comfortable ride in a 1st gen that you need to do the dynomat. But from the sounds of things that rubber is the cheaper way to go.

 

I bought a big roll of the foil lined construction insulation and used some of it to totally quiet down a big mixer that had straight cut gears. I'm sold, and as soon as I get the critical stuff done I'll insulate my cab and hood.

 

Interesting idea on the rubber stuff. Can you recommend a place to get it online or locally? I don't have any friends in the A/C industry and I'm already getting sick of hearing (or not, as it were) passengers complain about the straight pipe

Frankly, I actually do have trouble when I'm on my handsfree phone and really do want to sound insulate...

 

Yea, I bought the nice $100 LG bluetooth and can't use it in the truck without holding my hand over it and directing the sound from my mouth to it. Kinda defeats the (rediculous) stated purpose...

 

so where can we get the "foil lined construction insulation"

 

HomeDepot Baby!

 

i used dynamat as described and it helped a lot. road noise is quieter, but enging noise is still there. when traveling gravel roads the tings & pings of rocks become much more quiet and dull sounding.

 

Dynamat is nice for sub woofers or speaker rattles and thats about it. If your looking for a sound barrier use something else.

I used dynamat in my nissan to raise dB levels from 144.6 to 146.7. I think thats about the ONLY use for it and its high price

 

Does the Rubatex stuff you mention have an adhesive coating on 1 side or would I have to supply my own adhesive?

 

You have to apply standard contact adhesive to each surface for a permanent installation.

 

I used the foil backed bubble wrap looking stuff in my 92. I double layered it on the passenger side and rear club cab area, and it made a HUGE difference. Girlfriend and I could talk normally now. I added a muffler and made about the same drop in noise. Best part is, I spent $20 on a single 50 sq ft roll, and have another roll to go under the driver's seat and floor area, along with the back and sides of the extended cab area.

Daniel

 

Dpuckett,
Where'd you get that foil backed whoseymawahchits ?

Any other ideas? Cause MAN I gotta do something...

That straight pipe has it's downsides