question to the rear end gurus
07-19-2007, 10:52 AM
#1
Registered User
Thread Starter
Join Date: Jan 2005
Location: Germany
Posts: 135
question to the rear end gurus
Hi folks!
sorry, I don't know the correct english notations...... but here is my problem:
I have a complete stock Camaro Z28 from 1999 with LS1 engine, A4 and a 2,73 rear end with Torsen Zexel inside!
during normal driving I hear no abnormal noise, but after crossing the 60 KPH line I here a loud whine from the rear end
If I accelerate more and more the whine goes louder and louder.
It whines during coasting at the same speed too...... putting the auto in neutral doesn't change anything...
I had read a lot about the F-Body rear end, but what the hell is this whine from 60KPH + ?
are the bearings in the diff. worn out?
Wheelbearings worn out?
I jacked up the rear and checked the wheels..... there is no play and no abnormal noise if I turn the wheel by hand!
Second problem:
during coasting below 30 KPH I can hear a loud rattle if I drive light turns, especial right turns. After giving little gas the noise disappears.... I think its normal for the Zexel, but in my new Camaro it's unusual loud.
And yes, I checked the oil in the rear end.... It was enough, so I changed it with Castrol 80W140 synth. plus a bottle of GM's LSD additive.
I mean the rear end is a little bit quieter.....but still loud if I compare it to my previus 4th gens with the same axle!
I hope my grammar is not too tremendous
thanks for help!!
sorry, I don't know the correct english notations...... but here is my problem:
I have a complete stock Camaro Z28 from 1999 with LS1 engine, A4 and a 2,73 rear end with Torsen Zexel inside!
during normal driving I hear no abnormal noise, but after crossing the 60 KPH line I here a loud whine from the rear end
If I accelerate more and more the whine goes louder and louder.
It whines during coasting at the same speed too...... putting the auto in neutral doesn't change anything...
I had read a lot about the F-Body rear end, but what the hell is this whine from 60KPH + ?
are the bearings in the diff. worn out?
Wheelbearings worn out?
I jacked up the rear and checked the wheels..... there is no play and no abnormal noise if I turn the wheel by hand!
Second problem:
during coasting below 30 KPH I can hear a loud rattle if I drive light turns, especial right turns. After giving little gas the noise disappears.... I think its normal for the Zexel, but in my new Camaro it's unusual loud.
And yes, I checked the oil in the rear end.... It was enough, so I changed it with Castrol 80W140 synth. plus a bottle of GM's LSD additive.
I mean the rear end is a little bit quieter.....but still loud if I compare it to my previus 4th gens with the same axle!
I hope my grammar is not too tremendous
thanks for help!!
Last edited by Fierotom; 07-19-2007 at 10:58 AM.
07-19-2007, 03:21 PM
#3
Registered User
Thread Starter
Join Date: Jan 2005
Location: Germany
Posts: 135
I bought the Camaro with this problem!
to check tooth contact pattern I have not enough experience - I know exact what you mean, but I never worked at the rear end.
To measure the backlash I need a gauge....
Do you think my problem with the whine is a consequence from wrong settings inside the axle?
Is it normal wear after 80.000 Miles?
thx
to check tooth contact pattern I have not enough experience - I know exact what you mean, but I never worked at the rear end.
To measure the backlash I need a gauge....
Do you think my problem with the whine is a consequence from wrong settings inside the axle?
Is it normal wear after 80.000 Miles?
thx
07-20-2007, 12:54 PM
#4
Registered User
Join Date: Apr 2002
Location: wisconsin rapids, WI
Posts: 620
i have owned several f-body's and the first thing i did with anyone i owned was to go through the rear end and replace all the bearings and re-set them up
usually the pinion bearings are the first to go and they will give you a noise then when they get worse they take out the ring and pinion
with that kind of miles on it i would suggest replacing all the bearings and re-setting your ring and pinion
usually the pinion bearings are the first to go and they will give you a noise then when they get worse they take out the ring and pinion
with that kind of miles on it i would suggest replacing all the bearings and re-setting your ring and pinion
Thread
Thread Starter
Forum
Replies
Last Post
dbusch22
Forced Induction
6
10-31-2016 11:09 AM
oldschool
Parts For Sale
16
02-09-2016 09:21 PM