Guest nerfkhat Posted November 7, 2006 Share Posted November 7, 2006 hey guys im trying to help get my dads 280z in really good condition then it already is. The problem is when you put into gear and let off clutch the rear suspension or diff makes a loud clunk noise. same noise happens when you step on brakes..it pops or clunks coming from rear..im thinking its some kind of bushings but dont know where to begin to look...and hoping its not the diff..what do you guys think its coming from..? Quote Link to comment Share on other sites More sharing options...
alexideways Posted November 7, 2006 Share Posted November 7, 2006 Firs check you drive shaft & half shaft's u-joints for looseness, then check bushings for visual cracks and try to move them around with an pry bar. If everything is ok, you can start suspecting a diff. Quote Link to comment Share on other sites More sharing options...
mom'sZ Posted November 7, 2006 Share Posted November 7, 2006 sounds like the front differential mount Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted November 8, 2006 Share Posted November 8, 2006 yep.. sounds like a diff mount. I had about 5 or 6 different things making noise in the rear end of my Z...Now it is much better. Poly bushings and new diff mount did wonders. Quote Link to comment Share on other sites More sharing options...
Guest nerfkhat Posted November 8, 2006 Share Posted November 8, 2006 ya i was thinking it was the diff mounts. cuz it feels like the diff moves forward and back when you get on the gas and brake...can i get just those bushings in poly by themselves or would i have to buy a bushing kit? Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted November 8, 2006 Share Posted November 8, 2006 well there is the front diff mount and the mustache bar bushings. Try the front one first as that will most likely be the culprit. Nissan carries the front diff mount for around $40. Quote Link to comment Share on other sites More sharing options...
mom'sZ Posted November 8, 2006 Share Posted November 8, 2006 can i get just those bushings in poly by themselves or would i have to buy a bushing kit? I think you can get the mustache bar bushings separately. Like OTM said though, go ahead and get the front diff mount first, that is what makes the clunk. Quote Link to comment Share on other sites More sharing options...
Rumnhammer Posted December 15, 2006 Share Posted December 15, 2006 Hi, I was just going to post on here as I am having similar noises in the same situation. Only thing different is that I've swapped in an RB25DET. The driveshaft is brand new and fits properly, it has brand new spicer joints in it. Also a brand new front isolator mount, and I just finished replacing all the bushings in the rear with polyurethane replacements. I don't think that there is that much diff movement. The only thing I have left to do is the final torquing of the control arm bolts. I'm really at kind of a loss as to what this is. Chris Rummel Quote Link to comment Share on other sites More sharing options...
COZY Z COLE Posted December 16, 2006 Share Posted December 16, 2006 nerfhat.... Buy the whole kit and do the car right. It's much better to not mix old worn out bushings with new ones. You'll find the car will handle so much better when you replace the front ones also. http://store.summitracing.com/egnsearch.asp?SearchType=Make&N=700+4294907666+4294906934+4294925061+4294925130+400008+115+4294865789 Rumnhammer.. If you have not, retighten all your bolts in the rear and check the two bolts on the mustache bar. If they are loose the bar will move and make that clunking sound. LARRY Quote Link to comment Share on other sites More sharing options...
Rumnhammer Posted December 16, 2006 Share Posted December 16, 2006 Thanks, I'll be torquing the control arm bolts and rechecking the mustache bar nuts too. I'm kind of thinking it is the mustache bar springing and contacting the hanger supports Chris Rummel Quote Link to comment Share on other sites More sharing options...
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