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NC-car-guy

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Posts posted by NC-car-guy

  1. 2 hours ago, Machine Gun said:

    There were a few items that needed attention before my next road trip. Last year I installed new U-joints, replaced the rear axle bearings, and replaced the troublesome carburetor. I replaced a bad front wheel bearing yesterday, and I have to order new door weatherstripping to stop the wind noise that nearly drove me mad on my trip to Buick Gardens last Fall. A new issue came up since then that so far has eluded me.

     

    When the car is cold I can hear a low thumping noise coming from what sounds like the front of the car. It disappears when I apply the brakes. After the car is driven for a short while, say around 20 minutes, the sound gradually fades away. I can feel no vibration or other tactile sensation in the chassis, steering wheel, or brake pedal. I'm not sure where to look since everything looks good under the car and inside the brake drums. My first thought was a tire because the noise dissipates after I drive for awhile and the tires warm up a bit, but applying the brakes wouldn't affect tire noise, at least I don't think so. Suggestions?

    I had one that might a slight noise and vibration until the tires warmed up, I assumed one was slightly out of round somewhere.  It did change as I applied the brake.  I know you report no vibrations but might be worth taking the tires in for inspection and balancing.

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  2. Thanks for all the tips.  I'll try polishing the plastic part.  As for the stereo, I'm just going to keep using my portable blue tooth for now.  $99 each to recone the speakers, or $99 per pair for reproductions plus an adapter to fit the stock bracket (additional cost was not listed).  Plus rebuild of the radio.    If I keep the car, I'll do the custom auto sound like I did in the 1957.  Fits the stock hole but operates like new.  For now, I don't want to spend any additional on unnecessary items as my budget is already tight and IF I sell the car, the new owner may choose differently than I would.  

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  3. 1 hour ago, kgreen said:

     

    Still a lot of work to do and many issues to be sorted yet, trial run because I couldn't wait to drive it.  My retread Montgomery Ward tires are possibly 30-50 years old.  Strictly rollers, and I'll have new tires by the time the car comes back from upholstery.

    Awesome!    In the end did you try the hill?

  4. 40 minutes ago, rocketraider said:

    I'd call Jackson Speaker. They'll recone them and make any needed repairs to the voice coil, and the speakers will sound as the factory intended. 

     

    Plus you won't get into impedance issues. GM factory speakers were 10 ohm back then and most modern speakers are 4 ohm, which forces one to add resistors on the speaker's + terminal to keep from burning out the factory radio's output transistors.

     

    ###

     

    Looking at the Goodguys NC website reminds me why I let my Goodguys membership lapse. Pricey. Plus the last year I was a member I never got any newsletter or other communication from them, either hard copy or electronic, until they sent my renewal notice.😠

    That sounds like a long process and the factory radio isn't operational anyway.  I'll just put it back together and let the next owner worry about it. I'll Keep using my portable Bluetooth speaker

  5. Just now, rocketraider said:

    3.5" rounds are still produced. Can your fronts be disassembled from their mounting brackets?

    They come off the bracket.  But all the magnets on modern speakers are round, not square like these oddballs.

  6. 20 minutes ago, rocketraider said:

    I had thought all 70s GM stereo radios used 3.5" round dash speakers but those look like 4x6 ovals. The rears do look like 6x9 ovals.

     

    Check with crutchfield.com and see what they have. Website lists a number of 4x6 options.

     

    Worst case is having to get your existing speakers rebuilt. I've used Jackson Speaker Service in Jackson MI several times and been well pleased. Phone 517-740-0092. I don't think he's ever had a website.

    The front speakers are the 3.5s. The back are 6x9 .

  7. Well I finally have a Sunday off and I thought I'd get my radio working better in time to drive this up to the good guys show in Raleigh.  Nothing is ever as simple as planned.  Of course the front speakers are some oddball size that I can't find anywhere and the radio has had several modifications done with all sorts of wires coming out of it that don't match the original.  

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