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Noise Level

Discussion in 'Defender 90 / 110 / 130' started by Mario110, Jul 5, 2020.

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  1. 300bhp/ton

    300bhp/ton Well-Known Member

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    They had little sound proofing compared to latter ones, but they where still more refined than a V8 90. Been in both. Plus it's just engineering.
     
  2. Mario110

    Mario110 Member

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    Ok....thanks a lot, I thought that the Unit Injector System was the loudest, I know that Common Rail is the quitest motor but from your answeres it depends more on the quality of the sound-proofing how loud it is inside the car. I have heard of mats that are permeable to air but also insulate the sound, I think I will try them. But first I have to get rid of the rust in footwell. :(
     
  3. Gmacz

    Gmacz Well-Known Member

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    I nice thick mat will cover it.
    You won't see it then.:)
     
  4. Mario110

    Mario110 Member

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    But I know it :D
     
  5. lynall

    lynall Well-Known Member

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    Conveyor belt is a good noise damper for floors.
     
  6. flat

    flat Well-Known Member

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    bastard heavy though, i have a it of ex-NCB belt dated 1988 about 2.5m long and its outrageously heavy! Great as a huge mat on the floor!
     
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  7. Al2O3

    Al2O3 Well-Known Member

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    Good sound insulator, but you're right it's heavy. For me, the issue is the number of suit cases that pile up! :rolleyes: :p
     
    lynall likes this.
  8. callisr

    callisr Well-Known Member

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    i too have an ex mod 90 with a 300tdi. Loud doesn’t even come close but it’s tolerable at a steady 65. The disco transfer box helped until it expired!
     
  9. Retroanaconda

    Retroanaconda Well-Known Member

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    Remember the Tdci models had higher ratio transfer boxes from the factory than previous versions which accounts for a great deal of the extra refinement, along with better soundproofing.

    You can achieve the same thing on earlier models by fitting a different transfer box or fitting an overdrive. My 200Tdi 90 was base spec when I got it but I’ve added extensive soundproofing and an overdrive and can now cruise comfortably at 70+ without excessive noise. Can’t say the same for the fuel consumption though! :D
     
  10. 300bhp/ton

    300bhp/ton Well-Known Member

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    I thought Tdci had the same transfer box. They do have a 6 speed.

    And yes you can quieten down a Tdi. But they will always be unrefined and noisy. You notice this when you get in a non Tdi Land Rover.

    Even a Tdi Discovery is no where near as refined and quiet as a V8 one. And a standard Disco has way better sound proofing and NVH than even the most heavily home spun Defender setup.
     
  11. Retroanaconda

    Retroanaconda Well-Known Member

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    It’s a 1.2 box in the Tdci. Hence the 6-speed gearbox, the extra low first makes up for the higher ratio transfer box.

    Absolutely a Tdi-powered Land Rover will always be less refined than a V8, or even an earlier indirect injection diesel one. An early Discovery is just a Defender with a better-built body on top and will easily do 90% of what the Defender will do just in more comfort. Its a shame the bodywork rusts so badly.

    The reason I have done the work to my 90 is because I do 30k a year in it. A Discovery would be quieter, more comfortable, cheaper, capable of everything I need, and less likely to get stolen. But I want to drive a Defender, and so I do - 500-600 miles in a day without major issue.
     
  12. resto_d1

    resto_d1 Well-Known Member

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    This! Mine is fairly loud but far from unbearable and I do drown out with music to be fair. I had all sorts of whistles and noises. I replaced vent seals and door seals with genuine, replaced rear window slider seals, I put silent coat sound deadening over inside face of bulkhead when I had dash out and also did gearbox tunnel. I then put some closed cell foam ontop of silent coat on footwells.

    I think if I went whole hog and overcoated the pads on bulkhead then did rear of the truck, I'd get quite a good result.

    If your at motorway speeds all the time change transfer box to a longer disco one. I'll be doing that when it goes in for a clutch.
     
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  13. Bobsticle

    Bobsticle De Villes Advocaat

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    They are all noisy until a good two inches of cow chit and straw has built up in the footwells.
     
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  14. dag019

    dag019 Well-Known Member

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    Lies. It never has chance to build up, the door seals/gaps allow water to rush in every time it is damp and flush all of the farm build up out the rust holes in the foot-well!
     
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  15. JimS

    JimS Well-Known Member

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    My TD5 110's the same, new seals, silent coat and carpet on top, nothing under the bonnet though and the roof just thin headlining, might get around to doing that as I think it could still be better
    Up to 50 or so it's fine you can hear the radio etc then you need to start semi shouting
     
  16. resto_d1

    resto_d1 Well-Known Member

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    I’ll likely swap my disco and fender transfer boxes overs both are leaking lol.
    I still have a little water leak after putting sika in all joints and new seals everywhere!!
    I want carpet but can’t when I know it still leaks
     
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