|
||
|
|
11th December 2015, 16:04 | #1 |
Avid contributor
Rover 75 Join Date: Aug 2015
Location: Southwold
Posts: 130
Thanks: 15
Thanked 8 Times in 8 Posts
|
Improving SOUNDPROOFING
I have a very, very late build Rover 75 CDTi. It has full wheel arch liners, underbonnet and bulkhead soundproofing - and full boot carpeting. In fact the carpet over the spare wheel is twice as thick as that on my (just sold and much missed!) Cowley V6. I have added an engine undertray (not present when I bought the car) and some thick rubber mats front and rear. I have noticed that there is no sound insulation under the rear parcel shelf, but there is foam at the front of it. In terms of improving the sound deadening I had thought of adding some foam around the (full size) spare wheel and some black felt in the door bins. Short of adding deadening to the inside of the doors, I just wondered if Members might suggest any other insulation areas?? ED
|
11th December 2015, 16:28 | #2 |
This is my second home
N/A Join Date: Feb 2010
Location: Suffolk
Posts: 6,867
Thanks: 0
Thanked 397 Times in 302 Posts
|
What noise are you trying to isolate?
I've insulated my car a lot (mainly for speakers, not done for NVH reasons) and I can't say it's made much of a difference. In my case, the spare wheel insulation made little difference - I suspect the rear seats act like giant sound absorbers as they completely seal a large part of the area between the boot and cabin. EDIT - Also I don't think felt is the sort of product you want to be using. You need proper products for the job. |
11th December 2015, 16:49 | #3 |
Posted a thing or two
Rover 75 Saloon Join Date: Jan 2015
Location: Essex
Posts: 1,177
Thanks: 221
Thanked 258 Times in 196 Posts
|
i have a CDT and I did a whole load of soundproofing for the stereo install. AS this is about as noisy an engine derivative as you can get, my successes may be of interest to you.
Just by using dynamat or eqivalent on the inner face of the outer door skin, the amount of cabin noise was reduced unbelievably, without needing sound proofing materials to deal with the outside noise - it seems the resonance in the panels once deadened is a real contributor. Whether you care about your stereo or not, the dynamat type stuff (I used Silent Coat 4mm) is fantastic and left my noisy Post Project Drive CDT quieter than my wife's Pre Project Drive V6. its like driving the submarine out of Red October..... Look in the ice for my 'mdf rings' thread if you are interested in pics and tips on how i did that - remember, its not relevant in your case to the stereo, you get a win on general soundproofing with this . Hope this helps
__________________
White Gold ConnSE, 2003 Mods: FBH Revotec Fan Inline 'stat Xenon lights + washers BMW MK4 satnav, clock mod, BT ulf, 16:9 screen & TV upgraded BM54 + BT Aux-in Miracast box Glasses holder Flip Key Spyhole +Jules plenum shield PPD - badges,rear plinth, carpeted heater panels, anchor bolts, reflectors Walnut Dash, handbrake+gearshift Twin Horns Drivers cupholder HK Speakers Chrome bullet mirrors Digital speedo LED interior bulbs Resler interface USB charging sockets x2 |
11th December 2015, 16:53 | #4 | |
This is my second home
Rover 75 CDT-2001 Join Date: Jan 2009
Location: Wrexham, North Wales
Posts: 3,606
Thanks: 195
Thanked 606 Times in 501 Posts
|
Quote:
On my 2001 cdt it had an extra exhaust silencer which is probably why i didnt see much improvement compared with the 2002 that didnt have it |
|
11th December 2015, 16:57 | #5 |
Posted a thing or two
Rover 75 Saloon Join Date: Jan 2015
Location: Essex
Posts: 1,177
Thanks: 221
Thanked 258 Times in 196 Posts
|
that's what i focussed on - the resonance induced in the doors is most of the cabin noise I reckon. If you did that, and the roof panels (which I ran out of deadening for by the time i was done) you'd have a car quieter than the quietest cowley builds. i know because i have
__________________
White Gold ConnSE, 2003 Mods: FBH Revotec Fan Inline 'stat Xenon lights + washers BMW MK4 satnav, clock mod, BT ulf, 16:9 screen & TV upgraded BM54 + BT Aux-in Miracast box Glasses holder Flip Key Spyhole +Jules plenum shield PPD - badges,rear plinth, carpeted heater panels, anchor bolts, reflectors Walnut Dash, handbrake+gearshift Twin Horns Drivers cupholder HK Speakers Chrome bullet mirrors Digital speedo LED interior bulbs Resler interface USB charging sockets x2 |
11th December 2015, 17:00 | #6 | |
This is my second home
Rover 75 CDT-2001 Join Date: Jan 2009
Location: Wrexham, North Wales
Posts: 3,606
Thanks: 195
Thanked 606 Times in 501 Posts
|
Quote:
|
|
12th December 2015, 09:55 | #7 | |
Posted a thing or two
75 facelift CDTi Connie SE Tourer. MGF 1.8 VVC Join Date: Jul 2014
Location: bristol
Posts: 1,424
Thanks: 176
Thanked 176 Times in 119 Posts
|
Quote:
__________________
Onwards and upwards. MGZT-T MK1 front and rear ends fitted, specialist- components in line thermostat mod done, retro fitted cruise control, Mk1 real wood dash fitted, real walnut steering wheel fitted, Pioneer DAB radio fitted. |
|
11th December 2015, 16:50 | #8 |
This is my second home
Rover 75 CDT-2001 Join Date: Jan 2009
Location: Wrexham, North Wales
Posts: 3,606
Thanks: 195
Thanked 606 Times in 501 Posts
|
Foil backed bitumastic type deadening material is good for around the boot. I took out all the boot liners and coated the inner rear wings, and all around the boot and wheel well, then used some stuff called dodomat to double the padding on top of the bitumastic one.
Deadened the drumming from the exhaust. In addition i put a layer of the dodomat which is heat and fire resistant on the bulkhead. Made a difference in my 2002 car, but made no difference on my 2001 car, so i think you are just going to have to try it and see. |
11th December 2015, 16:53 | #9 | |
Posted a thing or two
Rover 75 Saloon Join Date: Jan 2015
Location: Essex
Posts: 1,177
Thanks: 221
Thanked 258 Times in 196 Posts
|
Quote:
__________________
White Gold ConnSE, 2003 Mods: FBH Revotec Fan Inline 'stat Xenon lights + washers BMW MK4 satnav, clock mod, BT ulf, 16:9 screen & TV upgraded BM54 + BT Aux-in Miracast box Glasses holder Flip Key Spyhole +Jules plenum shield PPD - badges,rear plinth, carpeted heater panels, anchor bolts, reflectors Walnut Dash, handbrake+gearshift Twin Horns Drivers cupholder HK Speakers Chrome bullet mirrors Digital speedo LED interior bulbs Resler interface USB charging sockets x2 |
|
30th November 2020, 09:39 | #10 |
Avid contributor
Rover 75, 1960 Sprite Join Date: Aug 2015
Location: No town
Posts: 166
Thanks: 48
Thanked 16 Times in 15 Posts
|
Sound proofing
I have a 2004 diesel Connoisseur, 'Elgar'. It has 'fork' alloy wheels and Pirelli tyres. The engine is quite well muted, but could be quieter. The wind noise is quite noticeable. The worst noise is the noise of the tyres over most surfaces. The car also has various rattles and buzzzes from places such as doors and somewhere around the dash. There is also a whining sound which comes from the engine and is most noticeable at low speeds. I have no idea what this whining sound is, but it makes the car sound 'cheap'. The driver's door has a cheap-sounding hollow sound when it is closed. I would like to get some sound deadening for that door at least. However, despite all this, I get a lot of pleasure from owning and driving a Rover.
|
|
|