Sound proofing

Discussion in 'Engine' started by pluggers, May 2, 2003.

  1. pluggers

    pluggers Hardcore MB Enthusiast

    Messages:
    2,022
    Joined:
    Feb 13, 2003
    Location:
    Staffordshire
    Car:
    CLK 200 kompressor w209
    Has anybody ever tried to soundproof under the bonnet, if so what material did you use and was it any good,As I am thinking of doing this to mine shortly because at the moment I haven't got anything.I just want to try and make things sound a little quieter for day to day running.cheers:D
     
  2. andy_k

    andy_k MB Club Veteran

    Messages:
    5,204
    Joined:
    Apr 23, 2003
    Location:
    Bexhill, East sussex
    Car:
    Alfa GTV 3.0
    you are better adding more insulation to the bulkhead, floorpan and wheelarches to quieten things don in day to day running. Under hood insulation is best left to the "experts" OK. you can do it at home with some good heat resistant acoustic matting (most coachwork specialists will sell it) but it must be fixed with specialist adhesives and/or strapping etc to avoid any contact with moving parts. It will also cause greater heat build up under the bonnet as any heat dispersion through the uninsulated metal will be reduced or lost - just think how much loft insulation saves you in heating bills at home :)

    Adding acoustic panels to the inside of the doors also reduces noise drastically and there are loads of aftermarket firms offering full acoustic kits for most cars.

    here's a couple of links

    http://www.woolies-trim.co.uk/index.htm
    http://www.customaudiodesigns.co.uk/soundproofing/laminate.htm


    Hope that helps

    Andy
     
  3. jimmy

    jimmy Hardcore MB Enthusiast

    Messages:
    2,316
    Joined:
    Aug 8, 2002
    Location:
    Northamptonshire
    Car:
    Discovery 3 TDV6, Discovery 300TDi - Plaything!
    Might be worth trying the dealer.

    My old C180 had a very small piece of under bonnet felt type stuff that came about 18" up from the bulkhead, my C250TD has a complete underbonnet one that is much thicker too. Not sure if it would be a diesel or elegance option.

    I am thinking of doing something with the rear wheel arches as that is the only place you can hear any noticable noise from, particularly when the road is wet.
     
  4. OP
    OP
    pluggers

    pluggers Hardcore MB Enthusiast

    Messages:
    2,022
    Joined:
    Feb 13, 2003
    Location:
    Staffordshire
    Car:
    CLK 200 kompressor w209
    Cheers guys.I never really noticed heat build up before but ill look into it. The glue bit has caught me out as i never realised it was glued on just thought it was clipped on somehow.Still it cant be a bad thing to do if done right, as ive had, and seen loads of cars with underbonnet sound proofing.You just dont realise the difference it must make because it's allways been there.
     
  5. Simon

    Simon Hardcore MB Enthusiast

    Messages:
    1,405
    Joined:
    Jun 7, 2002
    Location:
    East Northants
    Car:
    C180 Proper gearbox
    Just a thought, but as Jimmy's C250TD has a complete underbonnet one, I should think you could get one from a breakers yard. Shurely it's the same type of bonnet.

    How's it fixed on Jimmy, clips?
     
  6. GrahamC230K

    GrahamC230K MB Club Veteran

    Messages:
    9,830
    Joined:
    Jul 14, 2002
    Car:
    Audi A3 & S4 quattro
    Not just the deisels that have them, lots os w202's had the full insulation.

    [​IMG]
     
  7. Koolvin

    Koolvin Administrator Staff Member

    Messages:
    10,076
    Joined:
    Jun 1, 2002
    Location:
    Staines
    Car:
    W168, W169 & S202
    Pluggers ill get u the part number for the whole sheet OEM a bit later ok.
     
  8. Shude

    Shude MB Club Veteran

    Messages:
    13,914
    Joined:
    Jun 1, 2002
    Location:
    Cheshire
    Car:
    CLK55 AMG
    Yeah both of my w202s have/had underbonnet insulation. I've only ever seen one without it.
     
  9. Steve_Perry

    Steve_Perry Hardcore MB Enthusiast

    Messages:
    3,241
    Joined:
    Jun 3, 2002
    Location:
    Wales, U.K.
    Car:
    CLS350CDI Grand Edition
    I've just checked under the bonnet, and my car has insulation the full length of the bonnet. The part is held in place by what looks like four clips (circular looking plug things).

    S.
     
  10. OP
    OP
    pluggers

    pluggers Hardcore MB Enthusiast

    Messages:
    2,022
    Joined:
    Feb 13, 2003
    Location:
    Staffordshire
    Car:
    CLK 200 kompressor w209
    sounds promising
     
  11. OP
    OP
    pluggers

    pluggers Hardcore MB Enthusiast

    Messages:
    2,022
    Joined:
    Feb 13, 2003
    Location:
    Staffordshire
    Car:
    CLK 200 kompressor w209
    :bannana: :bannana: :bannana:
     
  12. Koolvin

    Koolvin Administrator Staff Member

    Messages:
    10,076
    Joined:
    Jun 1, 2002
    Location:
    Staines
    Car:
    W168, W169 & S202
    pluggers, you don't even have any carpet on the underside of your boot lid!

    part number: Hood lining: A 202 680 00 25 clips: A008 988 78 (TIP: if you re-use 2 clips you will only need to order 2)

    let me know price etc.
     
  13. OP
    OP
    pluggers

    pluggers Hardcore MB Enthusiast

    Messages:
    2,022
    Joined:
    Feb 13, 2003
    Location:
    Staffordshire
    Car:
    CLK 200 kompressor w209
    Cheers Koolvin
    got the part on order now only cost £28.50+vat should have it by friday.Whilst at the scrappy today picked a carpet for the boot lid and also come across an engine undershield as well.
     
  14. Koolvin

    Koolvin Administrator Staff Member

    Messages:
    10,076
    Joined:
    Jun 1, 2002
    Location:
    Staines
    Car:
    W168, W169 & S202
    Pluggers you got mercs in your scrap yard?
     
  15. OP
    OP
    pluggers

    pluggers Hardcore MB Enthusiast

    Messages:
    2,022
    Joined:
    Feb 13, 2003
    Location:
    Staffordshire
    Car:
    CLK 200 kompressor w209
    got about 6 at the moment 3 - 190's, 1 - c-class 240D minus engine and clock lights bulbs (he he), 1 c-class estate minus engine unershield and gearbox undersheild (he he)thats on mine now.I would have had the adjustable steering colum thats on the floor but im skint. And also 1 280 TE I think, its an estate with mint chrome roof bars.In red im shure it's got leather as well.
    (if anyone is interested i'll dig out the address)
     
    Last edited: May 11, 2003
  16. Koolvin

    Koolvin Administrator Staff Member

    Messages:
    10,076
    Joined:
    Jun 1, 2002
    Location:
    Staines
    Car:
    W168, W169 & S202
    Has the engine sound proofing made a noticble diff or not really?
     
  17. OP
    OP
    pluggers

    pluggers Hardcore MB Enthusiast

    Messages:
    2,022
    Joined:
    Feb 13, 2003
    Location:
    Staffordshire
    Car:
    CLK 200 kompressor w209
    I think It has made it quieter,even putting on the engine and gear box undershield have made a noticeable differance, Im very pleased with the results and think it was worth the extra effort ,I think I will try sound proofing the inside of the doors next.Ill update when job is done.Thanx
     
    Last edited: May 20, 2003
  18. OP
    OP
    pluggers

    pluggers Hardcore MB Enthusiast

    Messages:
    2,022
    Joined:
    Feb 13, 2003
    Location:
    Staffordshire
    Car:
    CLK 200 kompressor w209
    Finally got a pic of the finished article today not bad for how little it cost.

    [​IMG]
     
  19. OP
    OP
    pluggers

    pluggers Hardcore MB Enthusiast

    Messages:
    2,022
    Joined:
    Feb 13, 2003
    Location:
    Staffordshire
    Car:
    CLK 200 kompressor w209
    Another mod I have done recently which I think quietens things down abit is the engine and gearbox undershield,As well as having other use's it also stops unwanted wind noise in the engine bay and around the transmission tunnel.

    no mods were required for the engine undersheild

    [​IMG]

    Slight mod on this one to clear the down pipes

    [​IMG]

    [​IMG]

    [​IMG]
     
  20. Sp!ke

    Sp!ke Administrator Staff Member

    Messages:
    12,234
    Joined:
    Jun 2, 2002
    Location:
    West London
    Car:
    SL500 & The Fart Car
    The underbonnet soundproofing on my car is starting to crumble. I have ordered the new part (£25) but I was wondering how to fix it into place.

    Greenoaks suggested evostick and claimed thats what they use. I am a little worried that if I choose the wrong glue it will either melt the insulation or not bond it adaquately.

    Anyone offer any suggestions?
     
Tags:

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.