Thread: Defender 90 - Noise from stones in wheelarches on gravel roads

I painted on a couple of layers of thick bituman sound deadener paint which I got from super cheap. Worked well in reducing noise but was horrible to work with and is starting to come off after 4 years of hard life. Not bad really.

My next approach is going to be panels of HDPE cut to size and sikafkexed on.
I predict it will work better and will never need replacing.

Originally Posted by alittlebitconcerned

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My next approach is going to be panels of HDPE cut to size and sikafkexed on.
I predict it will work better and will never need replacing.

Sikaflex does not stick to HDPE. The sika technical people told me they have no product which will bond hdpe to anything. There are very few products out there that will bond with hdpe.

Do it once, do it right. Dynamat Xtreme will do wonders. m

Thomas
I put Dynamat Xtreme on the panels inside and the covered with marine carpet.
On the outside under the wheel arch I painted several coats of the sound deadener paint that alittlebitconcerned mentioned.
Made a huge difference.
Cheers
Tony

Use under sealer,thin it slightly and brush it on. Pat

Hi Thomas

Don't worry. If you look through a few posts you will see I had a sinking feeling after I got mine and I also copped it from the wife who then really regretted me trading in the "comfortable and quiet Prado".

Anyway I took some advice from here and Defendernet and it has made a big difference. Also I do think you do start to not notice it after a while.

What I did was get a place here in Perth to spray rhino liner in the rear wheel arches. Because it is a bit pricey I then just did the rust proofing over all the rest. This made a significant difference but if I did it again I wouldn't skimp on the extra few hundred and should have put rhino liner on more.

I also then went to BCF and for less then $20 bought a double bed camping mat that I cut up and placed in all the foot wells. I also used some yoga matting from Bunnings to line the rear cargo area as it was easier to cut and shape around my third row seats as I have a 110. Over the top went the standard LR mats.

I got some quotes for dynamat and one day I may put it in but to be honest I haven't needed to. I will also one day put in marine carpet.

Of course all the noise doesn't disappear but Nowadays the kids don't even blink (and more importantly nor does the wife). We live in the city but go to the family farm every few weeks and do a lot of gravel driving and haven't had a complaint for ages. And over Xmas we did some serious miles on gravel roads as well.

Jaycar also have sound deadening material. It comes in rectangles of about 20cm by 40cm and is self adhesive. I didn't get around to doing underneath the guards but the sound deadening in the back made a massive difference.

I put "peel-n-seal" roof flashing, purchased from Amazon, throughout the rear of my 110. While it helps a bit with noise, it doesn't stop the stoning sound. You'll need to put something on the underside of the wells.

The recommended undercoat, rhinoline, or do-it-yourself type brush/roll on is the key.