Nissan 370Z Forum - View Single Post - aftermarket suspension- clunk?

racerxj17 · 06-12-2009, 11:12 AM

just installed my BC coilovers set at about 1.2 F and 1.0 R drop. also have the front hotckis sway bar installed (ran out of time to do the rear). i havent had time to really push it, but i noticed today when i hit a few hard corners (90 degree) that there was a "clunk". i was able to reproduce it. it sounded and felt like it came from the rear end.

anyone share the clunk? i checked all bolts, nothing is loose. i did adjust the rear shocks to the OEM length (doesnt affect ride height), but thinking back i should have adjusted them an inch shorter to keep the shock stroke at the top.

the only think i can come up with is the spring is slightly lifting off the spring perch on the bottom when at full extension of the suspension (perhaps the inside tire around a hard corner?), since i do recall the rear spring being not as "compressed" as the stock springs at full extension.

or....possibly over tightened sway bar pivot points? i didnt use a TQ wrench since i was planing on replacing it very soon. ( i did take off all the bolts, but put it back on when i ran out of time)

anyways, ill dig into the problem more, but i figure since there are many with experience on a 370 id post up, or for those with similar issues.

lastly, anyone have rubbing in the rear with 1" drop? the outside edge of the rear tires have a very smooth, flat spot on the outer edge as if they were rubbing, but i cannot see where they would rub...

Jon

06-12-2009, 11:12 AM	#1 (permalink)
racerxj17 Track Member Join Date: Apr 2009 Location: Socal Posts: 555 Drives: 09 370z Rep Power: 17	aftermarket suspension- clunk? just installed my BC coilovers set at about 1.2 F and 1.0 R drop. also have the front hotckis sway bar installed (ran out of time to do the rear). i havent had time to really push it, but i noticed today when i hit a few hard corners (90 degree) that there was a "clunk". i was able to reproduce it. it sounded and felt like it came from the rear end. anyone share the clunk? i checked all bolts, nothing is loose. i did adjust the rear shocks to the OEM length (doesnt affect ride height), but thinking back i should have adjusted them an inch shorter to keep the shock stroke at the top. the only think i can come up with is the spring is slightly lifting off the spring perch on the bottom when at full extension of the suspension (perhaps the inside tire around a hard corner?), since i do recall the rear spring being not as "compressed" as the stock springs at full extension. or....possibly over tightened sway bar pivot points? i didnt use a TQ wrench since i was planing on replacing it very soon. ( i did take off all the bolts, but put it back on when i ran out of time) anyways, ill dig into the problem more, but i figure since there are many with experience on a 370 id post up, or for those with similar issues. lastly, anyone have rubbing in the rear with 1" drop? the outside edge of the rear tires have a very smooth, flat spot on the outer edge as if they were rubbing, but i cannot see where they would rub... Jon Last edited by racerxj17; 06-12-2009 at 11:14 AM.