Rear diff whine ( after chaning Rear Bushings)
#1
Rear diff whine ( after chaning Rear Bushings)
Hi guys ,
Weird problem happned to me , today I installed new rear Diff bushings the stock one was dead . So after when im done i drove the car so i found out the (thunk) sounds still there but not like before , then i speedup and start to hearing a whine from rear
The problem is the rear diff was fine non sound at all .
That do yoy guys think ?
Weird problem happned to me , today I installed new rear Diff bushings the stock one was dead . So after when im done i drove the car so i found out the (thunk) sounds still there but not like before , then i speedup and start to hearing a whine from rear
The problem is the rear diff was fine non sound at all .
That do yoy guys think ?
#2
EvoM Guru
iTrader: (1)
The stock bushings hide a lot of the clunking noises the diff makes when turning, as well as the whining the make when they don't have a good wear pattern. Best course of action would be to get it rebuilt with a new ring and pinion and you'll be good to go.
#4
EvoM Guru
iTrader: (1)
Originally Posted by barneyb
Obviously, this isn't due to wear or you would have heard it before.
#5
Evolved Member
My Subie came from the maker with the rear diff set up wrong and it whines in the 55 to 65 mph range. Every car of this make and model for that year is the same. So, yeah, I know what you are talking about. If you want the noise gone spend the money and maybe fix it. But if you don't fix it, we are talking about a gear mesh problem that probably is not going to affect the life of the diff - only bother your ears.
#6
EvoM Guru
iTrader: (1)
Yea, and the whine is hellishly annoying, at least it was for me. Well worth the money to fix.
#7
Evolved Member
iTrader: (25)
Hi guys ,
Weird problem happned to me , today I installed new rear Diff bushings the stock one was dead . So after when im done i drove the car so i found out the (thunk) sounds still there but not like before , then i speedup and start to hearing a whine from rear
The problem is the rear diff was fine non sound at all .
That do yoy guys think ?
Weird problem happned to me , today I installed new rear Diff bushings the stock one was dead . So after when im done i drove the car so i found out the (thunk) sounds still there but not like before , then i speedup and start to hearing a whine from rear
The problem is the rear diff was fine non sound at all .
That do yoy guys think ?
You changed the stiffness of the bushings which changes the NVH transfer from the diff.
Now you can hear the whine which was there all along, its now being transferred through the body in such away which is making it more audible.
Now you understand the task the OEM has to do to hide NVH issues from the customer while still proving performance.
Completely normal.
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#9
EvoM Guru
iTrader: (1)
Putting OEM bushings will make the noise go away in that you won't hear it because the bushings absorb it, the diff will be "making" noise. Rebuild it is the better option. You can get it done for around $1k.
#13
EvoM Guru
iTrader: (1)
Originally Posted by letsgetthisdone
Putting OEM bushings will make the noise go away in that you won't hear it because the bushings absorb it, the diff will be "making" noise. Rebuild it is the better option. You can get it done for around $1k.
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