Gear Whine after upgrades
#1
TECH Fanatic
Thread Starter
iTrader: (16)
Join Date: Apr 2005
Location: baltimore, MD
Posts: 1,413
Likes: 0
Received 0 Likes
on
0 Posts
Gear Whine after upgrades
so last night i put in my CS rear cradle bushings, diff block, and my voodoo chicken DS. in the process i drained the old diff fluid and threw in redline 75/90 with the GM additive. Now i hear the rear whine like a bitch on decel.
accel seems fine and rock solid. i am really digging the DS and bushings. the fluid that came out was black and i dont know how long it was in there. the diff is a warranty replacement when they offered the upgrade.
My question is do you think anything got out of line or is it just the new fluid making it noisy. i can deal with it i dont DD the car. I just want to make sure that i dont need to check any angles. everything went super smooth with the install.
accel seems fine and rock solid. i am really digging the DS and bushings. the fluid that came out was black and i dont know how long it was in there. the diff is a warranty replacement when they offered the upgrade.
My question is do you think anything got out of line or is it just the new fluid making it noisy. i can deal with it i dont DD the car. I just want to make sure that i dont need to check any angles. everything went super smooth with the install.
#4
On The Tree
Join Date: May 2015
Location: Top of 6th Gear
Posts: 105
Likes: 0
Received 0 Likes
on
0 Posts
#5
Actually, I'm probably the *only* guy to get under the car and do a comprehensive study of driveline misalignment angles other than John @ Revshift and Chris @ Geforce1320. Since your attitude sucks, figure it out yourself.
#6
TECH Fanatic
Thread Starter
iTrader: (16)
Join Date: Apr 2005
Location: baltimore, MD
Posts: 1,413
Likes: 0
Received 0 Likes
on
0 Posts
dude why are you even here? i simply was stating i know you are not under MY car measuring it RIGHT NOW and can not relate anything specific to MY situation but i know you are knowledgeable about the platform and asked for your opinion. so for you to get all up in arms thinking that i am saying you do not know measurements is dumb.
you misinterpreted what i said and if youre going to be a dick to people it shows whos attitude sucks. people come here for help and if they dont stroke your ego there is no reason to jump on them.
that being said if you would like to contribute great. if not oh well.
you misinterpreted what i said and if youre going to be a dick to people it shows whos attitude sucks. people come here for help and if they dont stroke your ego there is no reason to jump on them.
that being said if you would like to contribute great. if not oh well.
Trending Topics
#8
TECH Fanatic
Thread Starter
iTrader: (16)
Join Date: Apr 2005
Location: baltimore, MD
Posts: 1,413
Likes: 0
Received 0 Likes
on
0 Posts
Thanks to the 2 people with input. I can deal with the audible change and the stiffer bushings transferring it makes sense. I am not writing off that it couldn't be something different but everything went smooth and is torqued properly and feels fine driving at normal speeds or pulling through 1, 2, and 3rd gear.
#9
TECH Fanatic
iTrader: (1)
I did as well. The initial increase from the forward diff bushing and the CS block was more. Doing them all at the same time would be pretty dramatic I think. If I still DD'd the thing I probably would have at least removed the block by now if not bought a bearing/bushing press and put it back to the stock bushing. I would never go back from the cradle bushings though. That rear suspension whoopsie feeling with the stock ones was too gut wrenching especially on a rwd car.
#12
On The Tree
Join Date: May 2015
Location: Top of 6th Gear
Posts: 105
Likes: 0
Received 0 Likes
on
0 Posts
#14
I did as well. The initial increase from the forward diff bushing and the CS block was more. Doing them all at the same time would be pretty dramatic I think. If I still DD'd the thing I probably would have at least removed the block by now if not bought a bearing/bushing press and put it back to the stock bushing. I would never go back from the cradle bushings though. That rear suspension whoopsie feeling with the stock ones was too gut wrenching especially on a rwd car.
#15
TECH Addict
iTrader: (2)
https://ls1tech.com/forums/cadillac-...bration-9.html
#16
TECH Fanatic
I installed Specter Werkes cradle bushings years ago. As a result, my diff whines noticeably (and annoyingly) on acceleration, but I really haven't noticed as much of it during decel like you have. Is that difference attributable to something else?
EDIT: You know what ... I coast a lot with the clutch pedal pushed in as I come to a stop, so that's probably the reason. Never mind.
EDIT: You know what ... I coast a lot with the clutch pedal pushed in as I come to a stop, so that's probably the reason. Never mind.
#17
TECH Resident
iTrader: (3)
Drive line angle misalignment..... O.o no. If anything, it's even more in correct alignment now.. Jeez.
The whine is definitely noticable now due to the fluid change, or the bushings or both. My friend removed his CS diff block and went from revshift 95a to CS diff bushing because they caused decel whine to be very noticbly louder than just the CS bushing alone. Maybe try fluid swap first as it's cheaper than different bushings.. I noticed accel whine when I went to revshift 80a cradle bushings.. Just slightly more audible.
The whine is definitely noticable now due to the fluid change, or the bushings or both. My friend removed his CS diff block and went from revshift 95a to CS diff bushing because they caused decel whine to be very noticbly louder than just the CS bushing alone. Maybe try fluid swap first as it's cheaper than different bushings.. I noticed accel whine when I went to revshift 80a cradle bushings.. Just slightly more audible.
#20
TECH Junkie
iTrader: (3)
OP, how close is that Magnaflow exhaust to the diff case? I recently did street durometer cradle bushings and had a little increase in whine, but minimal. I have heat shielding around the pipes by the rear diff and that made the most notable difference in noise when I did it years ago. It didn't really whine until the car was hot.