Rear end noise
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Joined: Dec 2003
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From: Plattsburgh NY
Rear end noise
Our 78 is making a scrapping noise that seems to be coming from the back. It is very loud when I'm making a right hand turn. When I turn left I haven't heard it yet. I'm thinking the clutches in the rear diff. however, before I tear into it. I would like to know if anyone else has experienced this problem.
3rd Gear
Joined: Sep 2003
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From: Rye Victoria
Diff noise
Hi
I had a chatter in the diff a while ago and what I did was empty the old oil out of the diff (you need to suck out with a pump if you don't have a drain plug) put in some fresh diff oil and limitted slip diff lube and haven't had a problem since
. Certainly worth a try as a rebuild could be expensive.
Pete
I had a chatter in the diff a while ago and what I did was empty the old oil out of the diff (you need to suck out with a pump if you don't have a drain plug) put in some fresh diff oil and limitted slip diff lube and haven't had a problem since
. Certainly worth a try as a rebuild could be expensive. Pete
Burning Brakes
Joined: Aug 2005
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From: Hudson Falls, N.Y. 76 Vette Modified L-48
Originally Posted by vette1978
Hi
I had a chatter in the diff a while ago and what I did was empty the old oil out of the diff (you need to suck out with a pump if you don't have a drain plug) put in some fresh diff oil and limitted slip diff lube and haven't had a problem since . Certainly worth a try as a rebuild could be expensive. Pete
I had a chatter in the diff a while ago and what I did was empty the old oil out of the diff (you need to suck out with a pump if you don't have a drain plug) put in some fresh diff oil and limitted slip diff lube and haven't had a problem since
. Certainly worth a try as a rebuild could be expensive. PeteLast edited by kb2fzq; Oct 27, 2006 at 07:14 AM.
Tech Contributor
Joined: Aug 1999
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From: Connecticut, USA
Posi hammer or chatter usually is from a standing start around a corner when the diff is hot. Could be that but check to see that the side yokes are not hitting the diff due to wear. If you have a lot of endplay in them that could be your problem and that is something you want to fix before it wrecks the housing.
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Joined: Dec 2003
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From: Plattsburgh NY
Thanks for the feedback. Looks like I will change the oil in the Diff first. The yokes are new, and the end play is fine. I've changed the oil in the diff once a few years ago when I replaced the rear spring and then again a year later when I replaced the yokes due to end play. The rear was quiet afterwards. We took it on a trip afew weeks ago, after about 200 highway miles is when I noticed it. On the trip home is ran fine, just the scrapping noise when I cornered.
As with anything, I'm going to start with the easy stuff first. Once again thanks
As with anything, I'm going to start with the easy stuff first. Once again thanks
