s14 rear end sounds and vibartions, differential? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

A17Z · 09-23-2005, 12:23 AM

I'm getting a loud, roaring rear end sound and vibrations especially around 55mph. At first I thought it was my tires were going bad. I tried a couple of sets and the sound was still there. So I thought it was one of my wheel bearings so I replaced one of them. Sound still there. Then I rememered I changed my diff fluid with 85w-140 gear oil (really thick stuff). I'm thinking that has something to do with it. I'm going to switch it out with 80w-90 but any does anything think that would be the problem? Previous owner of my car installed a vlsd (i think it's a vlsd and i'm assuming the internals weren't swapped out for an aftermarket lsd).

sw20>>s14 · 09-23-2005, 01:30 AM

driveshaft?...worth checking out...

SochBAT · 09-23-2005, 01:39 AM

driveshaft, maybe the diff isn't bolted on tight on the casing end?

09-23-2005, 12:23 AM	#1
A17Z Leaky Injector Join Date: Apr 2003 Location: LA, CA Posts: 142 Trader Rating: (0) Feedback Score: 0 reviews	s14 rear end sounds and vibartions, differential? I'm getting a loud, roaring rear end sound and vibrations especially around 55mph. At first I thought it was my tires were going bad. I tried a couple of sets and the sound was still there. So I thought it was one of my wheel bearings so I replaced one of them. Sound still there. Then I rememered I changed my diff fluid with 85w-140 gear oil (really thick stuff). I'm thinking that has something to do with it. I'm going to switch it out with 80w-90 but any does anything think that would be the problem? Previous owner of my car installed a vlsd (i think it's a vlsd and i'm assuming the internals weren't swapped out for an aftermarket lsd).

09-23-2005, 01:30 AM	#2
sw20>>s14 Post Whore! Join Date: Jan 2005 Location: bay area Posts: 5,656 Trader Rating: (19) Feedback Score: 19 reviews	driveshaft?...worth checking out... __________________ s14\| y34\| 911 gts\| exige s\| 600rr\| r3\| 250r\| 85 girlfriend

09-23-2005, 01:39 AM	#3
SochBAT Post Whore! Join Date: Dec 2004 Location: Abilene, TX Age: 39 Posts: 6,428 Trader Rating: (9) Rides Gallery: SochBAT Feedback Score: 9 reviews	driveshaft, maybe the diff isn't bolted on tight on the casing end?