What are your suggestions to make the 75 quieter - Page 2

clf · 5th October 2016, 18:11

Quote:

Originally Posted by jonathan63

Any suggestions for which material to use on the above?

I dont to be honest, there are a huge variety of sound deadening materials available. For the large areas panels I would consider a damping material such as THESE I have used this, good value, but I used it around my sub box to cut localised vibration, and I am happy with that.

Other materials to consider HERE

Quote:

Originally Posted by SCP440

I don't know if the idea ever got off the ground but I know there was talk of noise cancelation being developed for cars.

I remember about 25 years ago, Lotus experimenting with microphones, and out of phase speakers in the headrests of the Espirit, which was rather interesting but I dont believe they developed it much further (probably couldnt because of financing). The S- Class I believe has something like that though currently.

Quote:

Originally Posted by T-Cut

Wind noise is a significant factor. There's a thread discussing the reduction of wind noise from the door windows. A felted adhesive tape was used to line the rubber window seals - with encouraging results apparently.

TC

............and as T-Cut suggests, looking into the window seals too (but beware of adding extra strain to the window motors). Remove any wind deflectors also, and swap out bullet mirrors for skull caps if fitted (I believe skull caps were slightly quieter. Wiper blades too with spoilers may help too.

dln6376 · 5th October 2016, 18:27

The DB rating on tyres is for external noise only.

The quietest tyres I've ever had on a 75 are Michelin Pilot Sport 3, and I've owned 5 Rover 75 and tried lots of tyres over the years.

Compared to my Audi A6 and Mercedes C Class I find a lot of noise enters the 75 from the engine bay so I'd start there.

Not to mention the usual noise sources such as creaking window seals, door cards and dashboard.

trimani · 5th October 2016, 18:46

T-Cut

Plus, check all your door rubber.

Also door mirrors can be a source of noise. The rubbers between door and mirror base compress and cause wind noise.

trimani (ALF)

marinabrian · 5th October 2016, 19:34

Quote:

Originally Posted by jonathan63

As per the title: I'm looking for ideas.
Tyres are all new Dunlops and Michelins: so done that.
I'll be dropping the headlining soon, so will fit some sound deadening material to the inside skin of the roof.

Any other suggestions?

Fit a petrol engine

, took Frosty out for a spin today, and noted how much more refined than the diesel he is

Failing that.........................

Brian

kc13661 · 5th October 2016, 20:33

I have to agree with Brian, after a few years of driving the tractor engine CDT I have been cruising around in the 1.8 petrol, first thing we noticed was How nice it was to hold a conversation in a quiet car

jonathan63 · 5th October 2016, 22:05

Petrol is not for me. 17k miles a years on my own money: it has to be a diesel. Over the last 1456 miles mine has returned 58mpg.

FLYING BANANA · 6th October 2016, 07:32

Remove the engine and fit a mast with a sail.

Or

Buy a V8 and enjoy the noise.

Bigcul1 · 6th October 2016, 08:33

Well in all fairness neither a diesel nor a petrol is loud anyway. Both are very quiet. You want to get in our Kia Soul 1.6 petrol. At 70mph the engine sounds like its sat on your lap.

Kennyeth · 6th October 2016, 08:41

Quote:

Originally Posted by jonathan63

As per the title: I'm looking for ideas.
Tyres are all new Dunlops and Michelins: so done that.
I'll be dropping the headlining soon, so will fit some sound deadening material to the inside skin of the roof.

Any other suggestions?

I used this on the under tray:
http://www.ebay.co.uk/itm/6-Sheets-C...YAAOSwc1FXYLqa
really good sticky on the sheets.
Ken.

Davey1991 · 6th October 2016, 09:46

Quote:

Originally Posted by Kennyeth

I used this on the under tray:
http://www.ebay.co.uk/itm/6-Sheets-C...YAAOSwc1FXYLqa
really good sticky on the sheets.
Ken.

Did the under tray make a difference to interior noise?

Sent from my D5803 using Tapatalk

5th October 2016, 18:27	#12
dln6376 Loves to post Rover 75 Saloon Join Date: Nov 2006 Location: Wigan Posts: 311 Thanks: 2 Thanked 14 Times in 14 Posts	The DB rating on tyres is for external noise only. The quietest tyres I've ever had on a 75 are Michelin Pilot Sport 3, and I've owned 5 Rover 75 and tried lots of tyres over the years. Compared to my Audi A6 and Mercedes C Class I find a lot of noise enters the 75 from the engine bay so I'd start there. Not to mention the usual noise sources such as creaking window seals, door cards and dashboard. __________________ David Lee Newsham 1999, Rover 75, Club SE, 2.0 V6, Atlantic Blue 2002, Rover 75, Connoisseur SE, 2.0 CDT, Automatic, White Gold 2002, MG ZT, Sports Auto 180+, 2.5 V6, Automatic, Le Mans Green 2002, Rover 75, Connoisseur SE, 2.0 V6 Automatic, British Racing Green 2003, Rover 75, Connoisseur SE, 2.0 CDT, Manual, Starlight Silver Last edited by dln6376; 5th October 2016 at 18:34..

5th October 2016, 20:33	#15
kc13661 I really should get out more....... Freelander Td4 Join Date: Jan 2013 Location: Gateshead Posts: 2,332 Thanks: 704 Thanked 909 Times in 419 Posts	I have to agree with Brian, after a few years of driving the tractor engine CDT I have been cruising around in the 1.8 petrol, first thing we noticed was How nice it was to hold a conversation in a quiet car __________________ ------------------------------------------------------------------- Growing old is compulsory.... Growing up is Optional

6th October 2016, 07:32	#17
FLYING BANANA Moderator/Club Shop MG ZT 1.8t+. No.3 of 4 in Sunspot Yellow & Ford Fiesta in Black. Join Date: Aug 2010 Location: Rattler Farm Posts: 22,564 Thanks: 9,270 Thanked 15,645 Times in 6,806 Posts	Remove the engine and fit a mast with a sail. Or Buy a V8 and enjoy the noise. __________________ 233,431. That’s our second meet done, no.3 next weekend. onen hag oll

5th October 2016, 18:46	#13
trimani Passed Away ROVER 75 V6 2Ltr 2001 AUTO / EMERALD MOTORBILITY SCOOTER Join Date: Apr 2011 Location: Poole Quay Posts: 3,180 Thanks: 2,051 Thanked 570 Times in 311 Posts	T-Cut Plus, check all your door rubber. Also door mirrors can be a source of noise. The rubbers between door and mirror base compress and cause wind noise. trimani (ALF)

5th October 2016, 22:05	#16
jonathan63 This is my second home CDTi Conniosseur SE HLNav Tourer and a Personal Line CDT Conniosseur SE Tourer..for the time being. Join Date: Jul 2010 Location: Cumbria Posts: 3,639 Thanks: 340 Thanked 423 Times in 294 Posts	Petrol is not for me. 17k miles a years on my own money: it has to be a diesel. Over the last 1456 miles mine has returned 58mpg.

6th October 2016, 08:33	#18
Bigcul1 Gets stuck in Rover 75 CDTi Con SE Join Date: Jul 2011 Location: Northallerton Posts: 846 Thanks: 123 Thanked 131 Times in 91 Posts	Well in all fairness neither a diesel nor a petrol is loud anyway. Both are very quiet. You want to get in our Kia Soul 1.6 petrol. At 70mph the engine sounds like its sat on your lap.