Knocking noises from rear whiteline endlinks

4359 Views 13 Replies 6 Participants Last post by doborder, Oct 1, 2011

doborder

Discussion Starter · Aug 30, 2011

I need a little help here. I put the endlinks on about a month ago and the fitment was perfect along with whiteline sway. I took it to the track and it worked out great. Still a little understeer, but much more balanced than before. Anyhow, I notice the past few days that the rear has a lot of knocking and bouncing noise when I go over harsh roads.. Is this normal? Is there a way to decrease the noise level? I will say if I put the suspension setting on race, then most of the noise goes away. Any help would be appreciated... If not, any suggestions on other endlinks to try?

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Jeremy GT-R

· #2 · Aug 30, 2011

Have you checked to make sure all associated nuts and bolts are still tight?

If you grab a hold to the end link, is there any play in the heim joint ?

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doborder

Discussion Starter · #3 · Aug 30, 2011

It's a little loose
I tighten them down last night
I drove the car this am
How do they stay tight?

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descartesfool

· #4 · Aug 30, 2011

Each rod end need a jamb nut to lock it in place.

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vividracing

· #5 · Aug 30, 2011

Is the actual bearing in the heim joint loose? If so, there's no fix other than replacing it. If the heim joint shaft is loose in the "stalk" of the endlink, the jamb nut needs to be tightened.

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doborder

Discussion Starter · #6 · Aug 31, 2011

Can the heim joint become loose in just one track day? The ball joint is easily movable with my bare hand. Top drivers side is loose and passenger side connection to sway bar is easily movable.
The jam nut is tighten down again
Thanks for the comments
I may have to call whiteline soon to get these looked at

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shawnhayes

· #7 · Aug 31, 2011

descartesfool said:
Each rod end need a jamb nut to lock it in place.

I've seen this problem myself. Even if the jamb nut is tightened down on the central shaft, all it has to do is turn to "loosen" itself from both end links. While the jamb nut makes this less likely, it can't prevent it completely.

My $0.02?

Blue locktite.

Shawn

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doborder

Discussion Starter · #8 · Aug 31, 2011

I tightened everything down again this afternoon
The noises has lessen but still there.
Nothing is like stock I guess... Guess thing will sounds like loose screws over rough roads...

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shawnhayes

· #9 · Aug 31, 2011

doborder said:
I tightened everything down again this afternoon
The noises has lessen but still there.
Nothing is like stock I guess... Guess thing will sounds like loose screws over rough roads...

This isn't normal. I would remove the underpanels and check the bushing mounts too. This noise you're hearing also might not be just the swaybar. If this noise had been present before, or right after install, that'd be okay, but this is a NEW noise. Just my $0.02

Shawn

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doborder

Discussion Starter · #10 · Aug 31, 2011

Bushing on the swaybar? I'll check that tonight. The noise is not a knocking noise per say. Its more that something is loose when you go over bumps. Kinda hollow sounding. Are you suppose to grease the bushing... where it contacts the sway bar? I will e-mail whiteline today as well. Thanks for your help Shawn!

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shawnhayes

· #11 · Aug 31, 2011

doborder said:
Bushing on the swaybar? I'll check that tonight. The noise is not a knocking noise per say. Its more that something is loose when you go over bumps. Kinda hollow sounding. Are you suppose to grease the bushing... where it contacts the sway bar? I will e-mail whiteline today as well. Thanks for your help Shawn!

Where THESE doodads connect to the rear subframe:

There can be looseness, especially if the new endlinks have "stiffened up" everything:

It has happened before to other members:
http://www.nagtroc.org/forums/index.php?showtopic=34760 \

I hope this helps.

Shawn

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doborder

Discussion Starter · #12 · Sep 1, 2011

Well, I tighten the bushing down... Didn't help
I greased the bushing... Didn't help
I will take it to someone next week to take a
Look
Thanks for everyone's help

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jdmrb1

· #13 · Sep 4, 2011

I've had this problem before and applied some lube to the bushings.

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doborder

Discussion Starter · #14 · Oct 1, 2011

So, I finally took it to a performance shop and told them about the problem... They said the same thing everyone said here so they proceeded to grease the front and rear bushing. The noise from the front is completely gone. The rear however still has a hollow knocking noise when going over rough pavement. They did corner balance it when I was there and adjusted the endlinks. I will have them install new endlinks in the rear during the off season...
Thanks everyone for their help!!!

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