clunk from rear diff?
Thread Starter
Racer
Joined: Aug 2005
Posts: 436
Likes: 0
From: milton wi
clunk from rear diff?
I have a 87 auto with 130k on it. Once I drive it for a few miles then stop and shift from park to drive I get a loud clunk from the rear diff. It only does it then, not when I 1st start it up and its cold. I had the u-joints checked and thanks not it. Im assuming its the gears, any ideas? Also anyone got some gears for sale? thanks
Le Mans Master
Joined: Dec 2002
Posts: 5,270
Likes: 3
From: Seattle Area WA
I actually think that this *could* be the C-beam bolts being loose. When you leave from start, torque is transferred to the C-beam and if the bolts are loose it will clunk.
This happened to me when I replaced my clutch and did not re-tighten the bolts after initial install.
(I now have C-beam plates from zfdoc.com which completely fixes the problem)
The second scenario, is that the splines on your half shaft-wheel bearings are rusted. This is causing a binding which causes the clunk on initial movement. You can pull the yoke out of the wheel bearing and clean up and grease up the splines and that may also resolve it.
Both much cheaper than new gears!
Good luck!
This happened to me when I replaced my clutch and did not re-tighten the bolts after initial install.
(I now have C-beam plates from zfdoc.com which completely fixes the problem)
The second scenario, is that the splines on your half shaft-wheel bearings are rusted. This is causing a binding which causes the clunk on initial movement. You can pull the yoke out of the wheel bearing and clean up and grease up the splines and that may also resolve it.
Both much cheaper than new gears!
Good luck!
Thread Starter
Racer
Joined: Aug 2005
Posts: 436
Likes: 0
From: milton wi
Originally Posted by USAsOnlyWay
I actually think that this *could* be the C-beam bolts being loose. When you leave from start, torque is transferred to the C-beam and if the bolts are loose it will clunk.
This happened to me when I replaced my clutch and did not re-tighten the bolts after initial install.
(I now have C-beam plates from zfdoc.com which completely fixes the problem)
The second scenario, is that the splines on your half shaft-wheel bearings are rusted. This is causing a binding which causes the clunk on initial movement. You can pull the yoke out of the wheel bearing and clean up and grease up the splines and that may also resolve it.
Both much cheaper than new gears!
Good luck!
This happened to me when I replaced my clutch and did not re-tighten the bolts after initial install.
(I now have C-beam plates from zfdoc.com which completely fixes the problem)
The second scenario, is that the splines on your half shaft-wheel bearings are rusted. This is causing a binding which causes the clunk on initial movement. You can pull the yoke out of the wheel bearing and clean up and grease up the splines and that may also resolve it.
Both much cheaper than new gears!
Good luck!
I hope so thats much cheaper
lite blue, are you talking about wheel bearings?
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Originally Posted by Buttz
I get a loud clunk from the rear diff.
Sorry, couldn't resist. For these car's that's kinda like saying "Hot Water Heater." If it's hot why do you need to heat it?If you've already checked the u-joints I would certainly look into the rear wheel bearings and check the bolts on the C-beam. You might hear it referred to as the torque arm, I usually do, but that's not completely accurate.
