road noise

Discussion in 'Technical' started by finn34, Oct 20, 2003.

  1. finn34

    finn34 Member

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    Hello from Finland
    I posted about road noise in my 70 mav some months ago. The noise is very loud, like in a cheap riceburner. I serviced the front end, changed the coil insulators, and checked everything. (Could not resist to take half a turn off the coils!)
    But the noise did get worse if anything. Tyres are normal 185/70 and 235/60. The noise sounds as if it would come from the front end. Lower door seals are new, no rustholes anywhere.
    Any suggestions?
    And by the way, changing a door hinge(pin) by first removing the plastic inner fender/splash guard works really well, no need to remowe anything else. But do not open the door while doing this!!
     
  2. jpollard

    jpollard Member

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    Noise

    When do you hear the noise? Only driving down the road, is it constant? Only at certain speeds? Is it a hiss or a hum.

    It may just be the type of tires you are running. Are they mud and snow or highway tires?

    More info would help.

    JP
     
  3. finn34

    finn34 Member

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    The noise is fairly high pitch, and starts at low speed and gets louder the faster you go. It is of course dependent on how coarse the pavement is. On new and real smooth asphalt, it is quiet. What will it be in the spring when the spikes have made the surface coarse! Othervise the mav is quiet, exept when accelerating, then the headers and raptors make a wonderful note!
    And the tyres are normal summer radials.
    But former cars of the same heritage have been quiet (62, 68 falcons, 63 fairlane), roadnoise that is.
    Could the shocks be the reason, it looked as if the bottom plate on one of them was rewelded or something. If they bend the bottom rocking insulator in some way? But all rubber insulators were there and they still had good gas pressure.
     
  4. jpollard

    jpollard Member

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    Dont know......

    Well, I am not sure and certainly not an expert on this but my experience has been that it is just the type of tire/tread you have on your tires. I suppose you could try different settings on your wheel alignment but that probably wont fix it. See if you can borrow a set of tires and rims from someone. Slap them on and see if it sounds different. Hopefully, someone with some real experience with this will give you some better advice. Good luck.
     
  5. finn34

    finn34 Member

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    I already had different front wheels and they were worse. But the Mav should not have eccessive road noise. Anyone had the same problem and solved it??? Many of you have lo profile tyres, they should really be loud. I know us-cars are supposed to be fairly quiet. Exhaust is a different matter.
     
  6. Grabber5.0

    Grabber5.0 Gear-head wannabe

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    Could it be the front wheel bearings?
     
  7. Todd

    Todd Mavchanic

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    When you turn, does the sound get more intense and louder? That would indicate wheel bearings.

    -Todd:)
     
  8. Lightning

    Lightning Member

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    Any chance your exhaust sytem is vibrating against something solid ?
     
  9. finn34

    finn34 Member

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    The noise is about the same when turning, and the front wheelbearings seemed fine, but are old. But rear wheel bearings sometimes are noisy before you can see or feel anything when inspecting. But they sound more like a faulty diff or something in my experience.
    I know it is not any exhaust rattle/sound, the car is not even rattling very much on stoned streets that we have some in Helsinki.
    But the noise really is disturbing in an othervise quiet car.
     
  10. jeremy

    jeremy I build t5's

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    you say it is just the front???

    swap the rear tires with the front and see if it goes away. If it does not, then your problem is for sure mechanical some way or another.
     
  11. finn34

    finn34 Member

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    I do not think my rear tyres will fit up front (235/60). My winter tyres vere noisy too. And it is hard to be sure it comes only from the front of the car. Still it sounds like a big sound leak. But if it is mechanical, what should I look for? Any similar experiences?
    At least I get the impression from your replies that mav´s should not have eccessive road noise. In some very early testdrives they complained about roadnoise but not in later tests.
     

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