'04 Z Differential Issues
Thread Starter
2nd Gear
Joined: Jun 2013
Posts: 2
Likes: 0
From: Portland, OR
'04 Z Differential Issues
I bought a 2004 Z06 w/25k miles about a month ago, and this is my first post.
I've got a fairly loud whine coming from (I think) the differential.
I changed out the differential oil, and there were definitely metal flakes present.
After the fluid change, the whine is somewhat diminished, but still present.
I'm hoping you folks can help me answer the following questions;
How imminent are serious problems here? It's my DD, and I'm not too keen on getting stranded, but if it's not going to be an immediate problem I'd like to wait on the repair for a few months.
Is is likely just a new ring & pinion are needed, or am I looking at a full rebuild/replacement?
What are my various rebuild/replace/repair options?
Many thanks for your time.
I've got a fairly loud whine coming from (I think) the differential.
I changed out the differential oil, and there were definitely metal flakes present.
After the fluid change, the whine is somewhat diminished, but still present.
I'm hoping you folks can help me answer the following questions;
How imminent are serious problems here? It's my DD, and I'm not too keen on getting stranded, but if it's not going to be an immediate problem I'd like to wait on the repair for a few months.
Is is likely just a new ring & pinion are needed, or am I looking at a full rebuild/replacement?
What are my various rebuild/replace/repair options?
Many thanks for your time.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If its just a whine, you should be fine. Over time, the sometimes get louder. Nothing you can do but have someone replace the ring and pinion. Could be time for a 390 or 410 gear set!!!
There pretty bullet proof UNLESS you get wheel hop and dont get off the gas. If you allow it to wheel hop, it will break an output shaft OR bust the case in half,
Here are a couple of post for you to look at They explain a LOT:
- C5, ragtopws6 , Upgrading your C5 rear with C6 Z06 guts, : http://forums.corvetteforum.com/c5-g...-z06-guts.html
-
- C5, Its_Go_Time, Output Shaft Install - Left and Right: http://forums.corvetteforum.com/c5-t...post1573407966
- C5 Differential Seal replacement: http://forums.corvetteforum.com/c5-g...on-photos.html
-
BC
There pretty bullet proof UNLESS you get wheel hop and dont get off the gas. If you allow it to wheel hop, it will break an output shaft OR bust the case in half,
Here are a couple of post for you to look at They explain a LOT:
- C5, ragtopws6 , Upgrading your C5 rear with C6 Z06 guts, : http://forums.corvetteforum.com/c5-g...-z06-guts.html
-
- C5, Its_Go_Time, Output Shaft Install - Left and Right: http://forums.corvetteforum.com/c5-t...post1573407966
- C5 Differential Seal replacement: http://forums.corvetteforum.com/c5-g...on-photos.html
-
BC
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
bill answered most everything
all i can say on whine is this
mild whine is more annoying that a potential for being stranded. i've had a jeep cherokee that's whined since i bought it at auction and it's been somewhere near 50k miles i've put on this beater. still whiney, still going strong
you may try 75-140 gear oil to see if it quiets down at all. would be a low cost way to test before replacement. just make sure you use a gear oil with the correct additive. i normally use redline 75-90 but they do make 75-140 both with the correct additive for our LSDs
just don't buy the one that says no additive or NS
all i can say on whine is this
mild whine is more annoying that a potential for being stranded. i've had a jeep cherokee that's whined since i bought it at auction and it's been somewhere near 50k miles i've put on this beater. still whiney, still going strong
you may try 75-140 gear oil to see if it quiets down at all. would be a low cost way to test before replacement. just make sure you use a gear oil with the correct additive. i normally use redline 75-90 but they do make 75-140 both with the correct additive for our LSDs
just don't buy the one that says no additive or NS
Last edited by racebum; Jun 19, 2013 at 03:38 PM.
Safety Car
Joined: Apr 2004
Posts: 3,532
Likes: 79
From: pueblo co
On the popular auction site you can get a case fairly cheap then up grade it to c6 z06 parts and the take a weekend to swap the old one out with the new one.. When you put the new fluid I did you several figure eights to pack the fluid into the gears
Le Mans Master
Joined: May 2007
Posts: 5,393
Likes: 17
From: Belleville Mich.
Thus the recommendations from other members in regards to the
differential not the tranny.
