Clicking Sounds revisited
Thread Starter
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
Clicking Sounds revisited
A while back, I wrote about this agonizing click I get from the rear of my car. It happens when I go from Park to Rev or vise-versa. Or, also if I get ON IT HARD then back off, I'll hear the same noise. Not brake click it's much more than that.
I replaced all six U-joints and the ones in the half-shafts are solid crosses. No change at all from the noise. Now that the stroker motor is in the noise is more noticeable...yet everything under there is tight. No slop in the diff or any of the joints.
Local shop that does nothing BUT gears in race cars/high perf vehicles suggested that it could be clicking from the half-shafts "walking" on the yokes of the diff. He suggested I pull the axles, and put a jab of grease behind the flanges where they bolt to the hub and the diff.
Does this sound like an exercise in futility or is it a viable possiblity?
I'm dyin to figger this one out!
:flag When I do I'll be :cool: and then it will be time to :party:
I replaced all six U-joints and the ones in the half-shafts are solid crosses. No change at all from the noise. Now that the stroker motor is in the noise is more noticeable...yet everything under there is tight. No slop in the diff or any of the joints.
Local shop that does nothing BUT gears in race cars/high perf vehicles suggested that it could be clicking from the half-shafts "walking" on the yokes of the diff. He suggested I pull the axles, and put a jab of grease behind the flanges where they bolt to the hub and the diff.
Does this sound like an exercise in futility or is it a viable possiblity?
I'm dyin to figger this one out!
:flag When I do I'll be :cool: and then it will be time to :party:
Race Director
Joined: Aug 2000
Posts: 18,478
Likes: 3
From: Quincy IL
Re: Clicking Sounds revisited (fauxrs)
no expert here, but i would remove the diff fill plug, and suck out some of the gear fluid with a vacuum gun and look for metal flakes. from 1976 to 1979 GM's axle yoke supplier did not heat treat the ends of the axles, therefore with wear they bang into each other, mushrooming the ends and making it very difficult to pull out the axle yokes without ruining the bearings. when i had my diff rebuilt the mechanic discovered this unexpected addl expense. a call to Bair's and $200 later I had a rebuilt pair of axle yokes.
Thread Starter
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
Re: Clicking Sounds revisited (Gary79)
I've thought about doing that , but the diff is so quiet that I've figured it was good. I have absolutely NO gear noise. :smash:
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
Re: Clicking Sounds revisited (SanDiegoPaul)
I wonder if your ring gear is loose on the carrier? I bought a used 456 rear end real cheap from a guy that sheared all the ring gear bolts off. They must have gotten loose and backed out.
Another thought. Check the front differential mount. When the rubber mounts wear out and get loose, a click or thud is heard when the drivetrain is shocked. This would be an easy one.
Also check the rear wheel bearings for play. This is not always noticed when the car is jacked and the suspension is in a bind. You might have to disconnect the half shafts to adequately measure the bearing play.
jim
[Modified by turtlevette, 8:11 AM 3/6/2003]
Another thought. Check the front differential mount. When the rubber mounts wear out and get loose, a click or thud is heard when the drivetrain is shocked. This would be an easy one.
Also check the rear wheel bearings for play. This is not always noticed when the car is jacked and the suspension is in a bind. You might have to disconnect the half shafts to adequately measure the bearing play.
jim
[Modified by turtlevette, 8:11 AM 3/6/2003]
