Rear end clunk thoughts - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

di-devol · 03-10-2011, 11:47 AM

I'm at the end of a long journey to figure out wtf is clunking in the rear end.

I have searched and even commented on one thread thinking I found it being the diff (I was wrong).

From the moment I got my car running, it has had a welded diff. Makes a god awful clunking sound around corners and upon accel/deccel.

I started the hunt with installing SPL solid SF bushings, made it worse.

Replace every component in the rear suspension, toe traction, ruca, endlinks, swaybar bushings, axles, wheel bearings, and even swapped a open diff, then I installed a poly tranny mount and it still does it.

Led me to thinking that it was a bad carrier bearing or U-joint in the driveshaft. So I got a one-peice steel shaft from the DSS, and everything just got louder. I don't mind if this is normal, I just want to be sure there is not anything wrong. It is now starting to do it upon hard braking.

It sounds like the universe is colliding in the rear end, anyone have any ideas that could lead me to a conclusion?

Thanks.

di-devol · 03-11-2011, 01:03 PM

FML, rear bumper support was lose.

Problem solved.

iHateMySilvia · 03-11-2011, 01:09 PM

lol u went to alot for that, glad you solved your problem.

di-devol · 03-11-2011, 01:38 PM

lol, I know.

godzillarb · 03-11-2011, 02:06 PM

Wow. I have a clunk in the rear of my car too... I'll be checking the rear bumper support first lol

KiLLeR2001 · 03-11-2011, 05:02 PM

Quote:

Originally Posted by di-devol

FML, rear bumper support was lose.

Problem solved.

How loose are we talkin here?

S-Nation S13 · 03-11-2011, 05:08 PM

damn after numerous parts purchases, it was some loose ass bolts/nuts.... that crazy, well at least you have a new rear sub assembly lol

i second that how loose are we talking about...

di-devol · 03-11-2011, 05:16 PM

The bolts in the forward position were tight. Bolts were in the holes farthest back for the support were not even hand tight. So about 3/6" of play in the frame where the bumper support slides into. So on the outside of the bumper, it was about 3/4 up and down I could move it.

up BAM, down BAM. Welded diff was just making it move up and down. BAM BAM BAM BAMbam BAM. Shit was awlful, I don't know how I didn;t notice that changing out pretty much everything lol.

03-10-2011, 11:47 AM	#1
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 43 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	Rear end clunk thoughts I'm at the end of a long journey to figure out wtf is clunking in the rear end. I have searched and even commented on one thread thinking I found it being the diff (I was wrong). From the moment I got my car running, it has had a welded diff. Makes a god awful clunking sound around corners and upon accel/deccel. I started the hunt with installing SPL solid SF bushings, made it worse. Replace every component in the rear suspension, toe traction, ruca, endlinks, swaybar bushings, axles, wheel bearings, and even swapped a open diff, then I installed a poly tranny mount and it still does it. Led me to thinking that it was a bad carrier bearing or U-joint in the driveshaft. So I got a one-peice steel shaft from the DSS, and everything just got louder. I don't mind if this is normal, I just want to be sure there is not anything wrong. It is now starting to do it upon hard braking. It sounds like the universe is colliding in the rear end, anyone have any ideas that could lead me to a conclusion? Thanks.

03-11-2011, 01:09 PM	#3
iHateMySilvia Post Whore! Join Date: May 2010 Location: Anaheim, CA Age: 36 Posts: 2,807 Trader Rating: (30) Feedback Score: 30 reviews	lol u went to alot for that, glad you solved your problem. __________________ NaVanBrosガレージLtd,Co.

03-11-2011, 02:06 PM	#5
godzillarb Zilvia Junkie Join Date: Jun 2005 Location: Destin, FL Age: 39 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	Wow. I have a clunk in the rear of my car too... I'll be checking the rear bumper support first lol __________________ INTENSE POWER RIPPED ME OFF

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03-11-2011, 01:03 PM	#2
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 43 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	FML, rear bumper support was lose. Problem solved.

03-11-2011, 01:38 PM	#4
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 43 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	lol, I know.

03-11-2011, 05:08 PM	#7
S-Nation S13 Post Whore! Join Date: Jan 2008 Location: LAND of the LOST Posts: 4,083 Trader Rating: (92) Feedback Score: 92 reviews	damn after numerous parts purchases, it was some loose ass bolts/nuts.... that crazy, well at least you have a new rear sub assembly lol i second that how loose are we talking about...

03-11-2011, 05:16 PM	#8
di-devol Zilvia FREAK! Join Date: Jun 2010 Location: Woodinville Age: 43 Posts: 1,412 Trader Rating: (5) Feedback Score: 5 reviews	The bolts in the forward position were tight. Bolts were in the holes farthest back for the support were not even hand tight. So about 3/6" of play in the frame where the bumper support slides into. So on the outside of the bumper, it was about 3/4 up and down I could move it. up BAM, down BAM. Welded diff was just making it move up and down. BAM BAM BAM BAMbam BAM. Shit was awlful, I don't know how I didn;t notice that changing out pretty much everything lol.