Rallas

iTrader: (9)

I swapped in a rx-7 diff housing on my wifes 97 after being rear-ended. I have noticed that there is a lot more gear whine above 55mph. Is this normal for doing the bushing swap? I am just trying to make sure there is nothing else wrong with the diff or drivetrain. I am fully aware of the fact that the stiffer bushings wil not damp out the vibration and noise that a ssofter rubber bushing would.

hustler

iTrader: (6)

I have more whine after putting in the poly bushings too.

jeff_man

iTrader: (7)

same here, it sounds grate.

miatamania

iTrader: (9)

I also have the *** tingling at 3k rpms with the MMRs.

RotorNutFD3S

iTrader: (33)

Was the same on my NA as well.

Rallas

iTrader: (9)

Good deal! I mean it sucks for my wife but at least I don't have to worry that something is messed up. I will be putting these same bushings on my 91 once I get the torsen swapped in. Luckily my wife mostly drives it around town at less than 55mph where it seems to be quiet. I drive at 60-65 for most of my 35 mile trip to work and it has been driving me crazy for the past few days. Hopefully the 91's exhaust will mask the diff noise.

cueball1

iTrader: (13)

I noticed a lot of whine when I did the swap too. Mostly from my wife though. "You work on that car too damn much".

Yeah, the car's a little noisier too. Less rubbery though so it's a trade off.

FRT_Fun

iTrader: (19)

I noticed the whine also... but I have another question I don't think I want the answer to.

After the diff bushings I noticed a bit of what feels like excessive gear lash maybe? If I let off the gas, then get on it there is a bit of a tap noise. Sounds like there is too much space between the gears and when it switches faces it hits with a bit of force. Is this normal or a sign something is effed? I figured maybe it was the lack of dapening in the drivetrain allowing me to hear it.

Here is the catch.. it's a Kazz diff. I had heard they have a lot of lash built into them. I know they make A LOT (and I mean A LOT) of noises already, but this one worries me.

spoolin2bars

iTrader: (1)

if its not diff noise, then it might be the driveshaft u-joints (it's thats still what they're called). mine wore out and started making a sound like that. later it caused a vibration. bought another and the sound and vibration were gone.

miatamike

I'm just so ******* deaf from all the gear noise I don't whine anymore...

MartinezA92

iTrader: (4)

This. Feels like the car is shaking itself to pieces at a certain rpm on decel.

Reecers

so its not a good idea to replace the bushings? or is there something that isnt as noisey