Shimmy under acceleration
Thread Starter
Le Mans Master
Joined: Nov 2002
Posts: 8,342
Likes: 75
From: Tampa Bay
St. Jude Donor '06
Shimmy under acceleration
More issues with the 77. I still don't have the engine bugs worked out and now this. Under hard acceleration, say punching it at 70 MPH, the car wants to jump to the left. Letting off the gas causes a wiggle to the right. I am not talking about a slight movement. This is more like a bull ride. This is what has been checked and cleared or replaced:
Trailing arm bushings
Wheel Bearings
Front control arm bushings
Leaf Spring
Steering Box
Steering Cylinder
PS Control Valve
What have I missed, gentlemen???
Trailing arm bushings
Wheel Bearings
Front control arm bushings
Leaf Spring
Steering Box
Steering Cylinder
PS Control Valve
What have I missed, gentlemen???
Thread Starter
Le Mans Master
Joined: Nov 2002
Posts: 8,342
Likes: 75
From: Tampa Bay
St. Jude Donor '06
Originally Posted by big_G
Re-check trailing arm bushings and shims.
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
Keep looking at the rear, check differential side yoke end play, jack the car up and push the top of the wheel inward and see how much movement you have over 1/8-1/4" of play at the 6-12 o-clock position indicates excessive side yoke clearance to the differential cross shaft 9-3 o-clock position to check wheel bearing play that should be under 1/16" for wheel bearing clearance, do both checks. I think you will find your problems by doing this check
Thread Starter
Le Mans Master
Joined: Nov 2002
Posts: 8,342
Likes: 75
From: Tampa Bay
St. Jude Donor '06
Originally Posted by Solid LT1
Keep looking at the rear, check differential side yoke end play, jack the car up and push the top of the wheel inward and see how much movement you have over 1/8-1/4" of play at the 6-12 o-clock position indicates excessive side yoke clearance to the differential cross shaft 9-3 o-clock position to check wheel bearing play that should be under 1/16" for wheel bearing clearance, do both checks. I think you will find your problems by doing this check
Melting Slicks
Joined: Dec 2005
Posts: 2,441
Likes: 0
Originally Posted by outrunm
That was number one on the checklist. I thought I had it licked when I found my right rear wheel bearing to be hosed, but replacing it has not solved the issue.
Thread Starter
Le Mans Master
Joined: Nov 2002
Posts: 8,342
Likes: 75
From: Tampa Bay
St. Jude Donor '06
I think I found the problem.. The control arm bushings have been replaced. The joker that did the work has 3 of 4 not pressed in correctly, resulting in a sloppy front end. I'll try to get some pics uploaded.
