Humming Rear Driver Side Only Around 70mph

optiontrader · 03-04-2018, 11:02 AM

Bumping; got some news.

The reman axle is longer than the existing one. Looking online from Parts Geek where I purchased it from (it's a Surtrack, NI-8358), it shows the driver side longer than the passenger side. Can't be - the diff protrudes more onto the driver's side - that half axle has to be shorter. So I'm going to return the axle.

So do I give Z1 a call on their diff bushing set (gonna put the car back together in the interim)? As the black gunk isn't coming from the axle - the axle should be good.

Again - will replacing the diff bushings (I'm gonna be looking for a used set of Z1's tool) solve this noise?

Rusty · 03-04-2018, 06:50 PM

The black gunk is silicone from the diff bushing running down the diff. Your bushing is ruptured.

As for the humming. Could be a couple of things that could cause it.

03-04-2018, 11:02 AM	#1 (permalink)
optiontrader Track Member Join Date: Jul 2010 Location: Smog Hell, SoCal Posts: 595 Drives: 40th Rep Power: 17	Bumping; got some news. The reman axle is longer than the existing one. Looking online from Parts Geek where I purchased it from (it's a Surtrack, NI-8358), it shows the driver side longer than the passenger side. Can't be - the diff protrudes more onto the driver's side - that half axle has to be shorter. So I'm going to return the axle. So do I give Z1 a call on their diff bushing set (gonna put the car back together in the interim)? As the black gunk isn't coming from the axle - the axle should be good. Again - will replacing the diff bushings (I'm gonna be looking for a used set of Z1's tool) solve this noise? __________________ 40th Anniversary Z - 3M Paint Protection Film, CA Legal Tint! (70/40)

03-04-2018, 06:50 PM	#2 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,578 Drives: 2011 Nismo GM 6M Rep Power: 2684440	The black gunk is silicone from the diff bushing running down the diff. Your bushing is ruptured. As for the humming. Could be a couple of things that could cause it. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[WTB] Rear Bumper + Driver Side Skirt	ldalava	Parts for sale (Private Classifieds)	2	11-10-2015 11:35 PM
[WTB] Need driver side rear camber arm ASAP	Dragon_Ball_Z	Parts for sale (Private Classifieds)	0	04-26-2015 12:53 AM
Noisy rear driver side coilover?	RyanWest	Brakes & Suspension	2	04-03-2015 01:27 PM
wtb rear driver side tail light	theANSWER	Wanted	1	05-15-2013 09:10 PM
Driver side rear clicking noise	xSaintx	Brakes & Suspension	2	10-19-2011 04:16 PM