Wheel-arch - Sound-Deadening internally or externally?
- Thread starter Shaun Witts
- Start date
Managed to order a volume pack of 3mm silence coat from Car Audio Security - most places seem out of stock.
3mm sheets are a little stiffer...top tip...pre-heat the sheets even on warm day ..makes it easier to mould to contours
I was advised by a professional converter that Dynamat is preferable to Silent Coat in external applications as it has better adhesion.
I’ve used Dynamat Xtreme on;
Front arches (externally).
Front door skins plus inner door frames.
Front wings which as easy to do with the front wheel arch liners out. I’m not sure if the wings are creating noise in the cab but given a tap they are very noisy panels.
10mm acoustic foam on front door cards.
I’m about to do the rear arches externally with Dynamat Xtreme and will probably use left over 10mm foam on the rear arch liners.
I’ve used Dynamat Xtreme on;
Front arches (externally).
Front door skins plus inner door frames.
Front wings which as easy to do with the front wheel arch liners out. I’m not sure if the wings are creating noise in the cab but given a tap they are very noisy panels.
10mm acoustic foam on front door cards.
I’m about to do the rear arches externally with Dynamat Xtreme and will probably use left over 10mm foam on the rear arch liners.
Ok so I'm bored as bored as can be so I need to do something to the van. Is there a how to guide on removing the arch liners (@Dellmassive) or is it a simple case of wheel off, pop vw stupid never come out easy clips off?
It's easy. Wheel off then look inside for two screws at 10 and 2 o'clock ish. They're a small torx head but I forget the size.
Then two at the back where it contacts the bumper, one screw and one bolt underneath at the front, another bolt under the back and then the silly circular push on clip.
There is a loom running along the top of the chassis rail on each side (probably wheel speed) which is clipped in place. The clips are a different type each side (or at least they were on my 2016 Euro 5) but both are attached to threaded studs welded to the wheel arch which will poke through the sound deadening when finished.
This is all from memory so i may have missed a screw.....
Then two at the back where it contacts the bumper, one screw and one bolt underneath at the front, another bolt under the back and then the silly circular push on clip.
There is a loom running along the top of the chassis rail on each side (probably wheel speed) which is clipped in place. The clips are a different type each side (or at least they were on my 2016 Euro 5) but both are attached to threaded studs welded to the wheel arch which will poke through the sound deadening when finished.
This is all from memory so i may have missed a screw.....
Yes - not stellar, but noticeable reduction in the level tyre noise. The reduction is of the 'white noise' - the sort you get from a radio that's not tuned in. Other road noises are still there, and a low frequency booming from the side, but I'll live with that.
I'm not going mad with mine, it's a PV with no bulkhead, and I wanted to try this, as I'd seen the work on a number of the professionals' threads. Biggest improvement I made was Dynamat on the front doors as per other thread on the subject.
@BognorMotors do you do anything to the front arches? And do you apply anything to the rearside of the plastic arch liner?
We do the front inner arches from inside. And we do nothing to the plastic arches, just apply to the metalwork
Lucio
Member
Does it make a big difference doing the arches externally?
Never done it sorry. We do the complete floor
and arches from the inside
and arches from the inside
Lucio
Member
Which mat do you use?
Wanting to do rear floor but be able to retain the black factory mat on top?
We use silent coat and the factory mat goes over the top
Lucio
Member
Will be sound deadening the floor tomorrow but just noticed the anchor points sorry but which tool can I use to undo these?
You'll need an M10 spline bit or, if someone really gash was helping you, they may find that a 5/16 Allen Key just fits....
Hi,
Do people add sound deadening material to both the inside and external arch area? The inside of my van is going to be coated with insulation and sound deadening wherever possible but if it's also better to do externally then I might do that as well. Thanks!
Do people add sound deadening material to both the inside and external arch area? The inside of my van is going to be coated with insulation and sound deadening wherever possible but if it's also better to do externally then I might do that as well. Thanks!
