Re: 1947 Custom 4 door

Posted by Fish'n Jim On 2020/9/13 8:53:43
A guessing game. Sounds age, damage, sitting related. Helps to put up on a lift so you can inspect underside since occurs while moving.
Inspect for any tell tale leaks/build up of grease, fluids, etc. Hoses/rubber parts can get damaged from brake fluid, gas, etc. put a cardboard under it while sitting.
Suspension rubber components, like sway bar grommets, ball joints, body mounts, etc. cause the "old car growl".
Brake shoes worn, wheel bearing, dry grease seal.
Spring or spring support moving.

Doesn't appear to be the shocks since moving the bumper/frame didn't produce unless travel distance related.
Helps to have someone outside and ride up and down the drive/street past to hear the noise. May sound completely different from outside the cabin. put window down.
Almost not able to pin point these type noises without sound /vibration equipment.
You have to judge just how much effort you want to put in to chase this - inconvenience. It's an old car and a bit tired since rebuild. Likely will have more noises in the future as well. May go away on it own as well. Part of the experience of owning. Post-war so should not be wood related.
eg;
I had a noise coming from the center bearing area of my HD 4x4 pickup. It would only make shudder noise/vibe after hitting a bump. The mechanic could hear on road test but not determine. They prophylactically changed the most likely center bearing with no result. $165 shot. I loaded the bed one day and the noise went away. All we could figure was the leaf spring had been compressed during hauling and didn't seat properly until it was re-loaded again. So hitting a bump or pothole, over extension, can trigger these weird noises.

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