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Old 05-08-2012, 11:47 AM
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'58 Delray gear lash adjust rear end

Hello all, New guy daily driver Delray. I am looking for a link or site to explain how to check and adjust the gear lash and/or worn teeth pics on the original 3:55 ratio chunk. I haven't removed it yet. Thanks

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Old 05-09-2012, 03:32 AM
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Originally Posted by davidc
Hello all, New guy daily driver Delray. I am looking for a link or site to explain how to check and adjust the gear lash and/or worn teeth pics on the original 3:55 ratio chunk. I haven't removed it yet. Thanks
You can visually inspect it for badly worn, chipped/broken teeth or overheating. Use a magnet to fish around in the differential lube to see what you come up with.

But usually the symptoms of a worn or out of adjustment rearend will be noise (howling) on acceleration, deceleration or coast, or a rougher sound/feel of bad bearings, etc. If you don't have any unusual noises though, I'd call it good to go after inspecting it, replacing the diff dope and gasket.

Sometimes the axle bearings will give a roughness or a sound that's obviously not right, same thing for the U-joints. You can check them closer when you pull the axles out to drop the center section.

U-joints will often have a *clunk* sound to them when changing from reverse to forward and/or vice versa.
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Old 05-09-2012, 07:10 AM
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58 Delray vibration

I have to replace timing cover seals every six months. Over fifteen years I have swapped engines and transmissions twice. The drive shaft has been balanced each trans swap and neoprene u-joints and center bearing have been installed. The rearend has not been changed. The vibration is moving from 70 -75 MPH down to 60-65 MPH. The latest engine swap less than 8 months ago and the rear main seal is leaking. What can I look at or check?
Thanks, David
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Old 05-09-2012, 11:28 AM
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Vibrations are sometimes a real chore to find. Figure anything that moves has the potential to cause a vibe. I'd suspect the driveshaft or U-joints- but you've done them along w/the center support bearing (I forgot you had one).

Transmission and motor mounts can soften and settle over time until there's metal to metal contact- and that'll transmit vibes from the drivetrain into the chassis and interior.

An out of balance or failing torque converter can vibrate, same thing for an out of balance flywheel or clutch components. The tranny has been replaced, so worn input and output shafts, bushings, etc. are out.

I don't know if the seals going out are in any way related to the vibes. I tend to think not, being as how you've changed engines and the problem persists if I understood you correctly. Odd though, that they go out so often.

Have you tried seeing if it'll vibrate when accelerating or slowing down in gear, or coasting in or out of gear, or turning the engine off at the speed it vibrates (if you do this be very careful- no traffic around you, etc. because power brakes and steering will be lost!!!)? Point is you need to isolate the vibration to something less than "everything".

Are the same wheels and/or tires being used? You might want to swap to a different set of tires and wheels temporarily to see if that makes a difference. Hopefully others will chime in w/some ideas.
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Old 05-09-2012, 11:38 AM
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58 Vibe

Thanks,I have alot to check out. I appreciate your input.
David
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