Reply With QuoteHey Bushman that's 13.4 square metres. That wouldn't have been cheap if it was ridgey didge Dynamat Extreme.
Master
Thanks Bushman.
Hey Leyland I think Harro had a link in page 3 to a supplier of lead matting with a bit of sound absorption.
I looked at the site and they also have one to go around your gearbox.
Harro said the blanket on his motor made a big difference to that.
Master
Hey Bushman that's 13.4 square metres. That wouldn't have been cheap if it was ridgey didge Dynamat Extreme.
Master
SubscriberOriginally Posted by Leyland1980
My guess is that it will be quite significant - I will say down to 90dB.
I have just had a new (reco out of a TD5, thanks JC) gearbox put in and the reduction to our cabin noise was huge. I even now question whether i will bother with sound deadening. We can hold a conversation without yelling (though sometimes we may still choose to yell), and I can now hear my daughter in the back seat (and yes that is a good thing
). Currently I have bare floors, and roof.
Simon
95 Defender HCPU 130
Master
I bought it off Amazon.com from the US. Works out a lot cheaper than buying locally, even with freight added on top.
Master
I've just ordered some wave bar 8kg per square meter which is used on construction sites and in commercial buildings where they want to control sound.
It's $220 for 5 metres by 1.35m.
Will do this on all the flooring surfaces, under seats and as far up the front as I can get it.
Will also add some dynamat to the sides, doors and roof. Will see how it all goes.
Still think I will also get the blanket for the top of the motor as well.
My only question is what do people put over the top of the dynamat on the sides of the back of the vehicle where the silver is visible?
Need something to stick over the top that won't come off.
Master
http://www.pyroteknc.com/download/wa...%20install.pdf
Will be an extra 52kg in the car if I use the full roll.
ChatterBox
8kgs/sqm is pretty heavy indeed. Installed correctly that should provide some pretty decent results!! From the research I've done, 4kgs/sqm seems about average for reasonable automotive insulation with the 3 layers. When I do my 110 I'll be going 4kgs/sqm combined foil, foam, barrier.
If you get your 8kgs/sqm installed, please report back with results!
8kg/m2... Wow... There goes the fuel bill, acceleration etc
That's 100kg off your GVM...
Master
Yeah it will be heavy.
I still have an option to go for the 4kg/sq metre as I haven't picked it up yet.
Just thinking about the thickness and off it will be too thick..
Being that ill only do the base surfaces I reckon I'll only need one roll.
Master
Well I've done all the dynamating except the doors so far and yes agree with bushman that its 4 bulk dynamat packs at $198 each which i bought from Ryda car audio here in Sydney.
I have enough left for the doors and maybe a couple of spare sheets.
Have done all the rest of the car including the roof.
Wasn't able to get too far up on the firewall on the passenger side due to the A/C box/heater Box.
Overall it has made a big difference to ambient sound inside the car.
Running dynamat up over the transmission tunnel and also cutting out 2 layers of 4kg wave bar to go under the gearbox rubber boot near the gear stick has helped to quieten down general gearbox noise.
Ive also done the under bonnet sound absorber from dynamat which seemed to make a big difference.
Finally have added the engine sound dampening blanket which is made of lead and some kind of fiberglass matting but it hasn't made a huge difference like expected. Will take it for a longer drive and report back.
The engine blanket was originally fitted on the top of the engine and is now located from the rear of the top of the engine down over the bell housing to the top of the gearbox.
Was hoping it would remove some of the Diesel engine chatter when located on top.
Still have to do 4kg wave are in the back and also some marine carpet...
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