Help! Violent vibration

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Sep 3, 2008 | 08:15 PM

my 76 ray

Thread Starter

Melting Slicks

Joined: Mar 2007

Posts: 2,520

Likes: 11

From: Hinckley OH

Help! Violent vibration

I recently started having a problem with a violent vibration that happens OCCASIONALLY when I hit a bump. I checked all the ball joints, tie rods etc. and they all seem good. There is about 1/16th of an inch of play in the driver side lower ball joint, but I don't think that's enough to cause the severe vibration I'm having.

My son thought it might be a belt in a tire so I rotated them front to back but that didn't seem to change anything.

Any ideas?

Sep 3, 2008 | 08:26 PM

cargo247

Drifting

Joined: Dec 2007

Posts: 1,634

Likes: 1

From: aurora

could be a shock gone.
Todd

Sep 3, 2008 | 09:13 PM

my 76 ray

Thread Starter

Melting Slicks

Joined: Mar 2007

Posts: 2,520

Likes: 11

From: Hinckley OH

Quote:

Originally Posted by cargo247

could be a shock gone.
Todd

The shocks seem good. They pass the bounce test. I would think if one was causing that much vibration it wouldn't work at all.

Sep 3, 2008 | 09:28 PM

chupacabra1974

Instructor

Joined: Jan 2005

Posts: 120

Likes: 0

From: Richardson TX

Are you driving straight or turning some when the vibration shows up?

Rear differential was pretty noisy when I needed it serviced. That was mostly around corners though.

Just a thought. Good luck!

Sep 3, 2008 | 09:29 PM

GD70

Le Mans Master

Joined: Jan 2007

Posts: 5,485

Likes: 7

From: Peekskill NY

Have your wife drive along side on both sides of the Vette to see if she can see anything bouncing.
Did you check all your universal joints, steering linkages, upper & lower control arm bushings?

Sep 3, 2008 | 09:47 PM

Z-man

Race Director

Joined: Nov 1999

Posts: 10,643

Likes: 8

From: Foxfield CO 1970 Convertible

In my experience, this often comes from unbalanced or old tires in combination with bad alignment. They're on the edge...one bump will send them out of balance.

Sep 4, 2008 | 06:51 PM

my 76 ray

Thread Starter

Melting Slicks

Joined: Mar 2007

Posts: 2,520

Likes: 11

From: Hinckley OH

Quote:

Originally Posted by chupacabra1974

Are you driving straight or turning some when the vibration shows up?

Rear differential was pretty noisy when I needed it serviced. That was mostly around corners though.

Just a thought. Good luck!

It has only happened while I was going straight.

Sep 4, 2008 | 06:53 PM

my 76 ray

Thread Starter

Melting Slicks

Joined: Mar 2007

Posts: 2,520

Likes: 11

From: Hinckley OH

Quote:

Originally Posted by GD70

Have your wife drive along side on both sides of the Vette to see if she can see anything bouncing.
Did you check all your universal joints, steering linkages, upper & lower control arm bushings?

Everything is tight except for the small amount of play in the lower ball joint on the driver's side.