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Check your preload on your diff. Possibly a piece of the Belleville washer.
That is my quess also I have seen those before. The washer is done or even both.... I would upgrade to C6 clutches and springs, not a bad job once the rear end is out of the car....
Check your preload on your diff. Possibly a piece of the Belleville washer.
Yeah looking at pics of diff parts and that seems likely.
Originally Posted by Supercharged111
Is it magnetic?
yes it is
Originally Posted by 555ss
That is my quess also I have seen those before. The washer is done or even both.... I would upgrade to C6 clutches and springs, not a bad job once the rear end is out of the car....
Hmm ok. Thank.
And I should have been a little more descriptive. I have had the car 1 year and logged 1 track day and 9000 street miles. It was heavily tracked before i bought it.
I made the mistake of not changing fluid when i got car, i got lazy.I got a trackday next friday and I finally changed fluid and found this.
Now trying to figure out how much damage and if car is still track safe in current condition if no gear teeth or any visual damage when i take diff cover off
Last edited by bags142; 09-28-2016 at 01:02 PM.
Reason: Grammer
Yeah looking at pics of diff parts and that seems likely.
yes it is
Hmm ok. Thank.
And I should have been a little more descriptive. I have had the car 1 year and logged 1 track day and 9000 street miles. It was heavily tracked before i bought it.
I made the mistake of not changing fluid when i got car, i got lazy.I got a trackday next friday and I finally changed fluid and found this.
Now trying to figure out how much damage and if car is still track safe in current condition if no gear teeth or any visual damage when i take diff cover off
Not track safe unless you can handle the diff locking @ 100 plus. You will damage the gears etc. by driving it if they are not already done.
Well thinking about replacing whole unit just for the peace of mind.
Looking into the upgrades yall suggested too! 😄
I understand you may think it's "better" to spend more & replace the whole thing. What you will install is the same "marginal" diff that will (if you use it hard enough) fail again. Much better IMO to rebuild it and put in upgrade parts.
I understand you may think it's "better" to spend more & replace the whole thing. What you will install is the same "marginal" diff that will (if you use it hard enough) fail again. Much better IMO to rebuild it and put in upgrade parts.
Just what I would do if I had to.
I agree. But, I was thinking of getting a remaned unit from RKT with carbon clutch packs and springs , might be c6z parts. Looking at c6z shafts as well.
I am trying to get the "right" part for the job without braking the bank, but want to do get better than what I had! As most of us do.
And thanks Froggy. I am listening to what you and others are saying.
Yeah looking at pics of diff parts and that seems likely.
yes it is
Hmm ok. Thank.
And I should have been a little more descriptive. I have had the car 1 year and logged 1 track day and 9000 street miles. It was heavily tracked before i bought it.
I made the mistake of not changing fluid when i got car, i got lazy.I got a trackday next friday and I finally changed fluid and found this.
Now trying to figure out how much damage and if car is still track safe in current condition if no gear teeth or any visual damage when i take diff cover off
I have run a car with a bad bevel spring for several events thinking that just the clutches were worn but in reality both washers were broken.. The only issue I had was no posi. If you buy a replacement rear end form GM for the C5Z it now comes with the better clutches and springs, it even has the better shafts and a $1350 ish it is not a bad deal. I have changed 2 rear ends from drag racing my road race car I have also done several sets of clutches, we road race C5Z's and have several cars. Once the rear end is out of the car the carrier unbolts and you just need to compress the spring and swap out the parts. There are several posts on the forum about how to do it.
I agree. But, I was thinking of getting a remaned unit from RKT with carbon clutch packs and springs , might be c6z parts. Looking at c6z shafts as well.
I am trying to get the "right" part for the job without braking the bank, but want to do get better than what I had! As most of us do.
And thanks Froggy. I am listening to what you and others are saying.
Doing clutches and springs on the diff isn't really a difficult job, if you have the tools to do one specific step. You need to use a press to compress the spring on one side, can't remember which, so you can pull out the pin that holds the assembly together. In some models (though not all so check yours), this also involves removing the ring gear from the housing (just bolts, but I didn't have a vice or holder to properly unscrew/torque them). I got very fortunate that the local dealership did this part of the job for me for free when I walked in with half of my disassembled diff Everything except that is pretty much cake, you can buy the clutch packs and springs online rather cheaply.
I agree. But, I was thinking of getting a remaned unit from RKT with carbon clutch packs and springs , might be c6z parts. Looking at c6z shafts as well.
I am trying to get the "right" part for the job without braking the bank, but want to do get better than what I had! As most of us do.
And thanks Froggy. I am listening to what you and others are saying.
It seems like the bellville springs came broken from GM ;-)
I did this procedure last winter using the step by step in the C5 Tech section to replace clutches, bellville spring and output shafts. In the grand scheme of things, a simple project. Here's how it went down:
I agree. But, I was thinking of getting a remaned unit from RKT with carbon clutch packs and springs , might be c6z parts. Looking at c6z shafts as well.
I am trying to get the "right" part for the job without braking the bank, but want to do get better than what I had! As most of us do.
And thanks Froggy. I am listening to what you and others are saying.
St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
Originally Posted by bags142
I agree. But, I was thinking of getting a remaned unit from RKT with carbon clutch packs and springs , might be c6z parts. Looking at c6z shafts as well.
I am trying to get the "right" part for the job without braking the bank, but want to do get better than what I had! As most of us do.
And thanks Froggy. I am listening to what you and others are saying.
If your differential isn't whining/making noise, it would be cheaper to just upgrade your internals.
We have seen cars with less than 30K miles with broken springs.
I have run a car with a bad bevel spring for several events thinking that just the clutches were worn but in reality both washers were broken.. The only issue I had was no posi. If you buy a replacement rear end form GM for the C5Z it now comes with the better clutches and springs, it even has the better shafts and a $1350 ish it is not a bad deal. I have changed 2 rear ends from drag racing my road race car I have also done several sets of clutches, we road race C5Z's and have several cars. Once the rear end is out of the car the carrier unbolts and you just need to compress the spring and swap out the parts. There are several posts on the forum about how to do it.
Ok. Cool. Thanks. I found them!
Still sitting out RA next week. Lol
Originally Posted by dhowdy
Doing clutches and springs on the diff isn't really a difficult job, if you have the tools to do one specific step. You need to use a press to compress the spring on one side, can't remember which, so you can pull out the pin that holds the assembly together. In some models (though not all so check yours), this also involves removing the ring gear from the housing (just bolts, but I didn't have a vice or holder to properly unscrew/torque them). I got very fortunate that the local dealership did this part of the job for me for free when I walked in with half of my disassembled diff Everything except that is pretty much cake, you can buy the clutch packs and springs online rather cheaply.
Thanks for the info and vote of confidence! I am planning on pulling diff and taking it apart to see what needs to be changed
Originally Posted by tmtraylor
It seems like the bellville springs came broken from GM ;-)
I did this procedure last winter using the step by step in the C5 Tech section to replace clutches, bellville spring and output shafts. In the grand scheme of things, a simple project. Here's how it went down:
09-27-2016, 04:58 PM
Found hunk of metal in diff fluid... Wtf is it?
Everything except that is pretty much cake, you can buy the clutch packs and springs online rather cheaply.
