Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 05-09-2010, 08:23 AM   #1
Registered User
 
Join Date: Oct 2009
Location: USA
Posts: 43
Noise after Upper Rear Track Arm Replacement

I replaced my upper rear track arms, that were causing a clunk, with adjustable arms from Hardrace on my 55K mile 2003 boxster. The clunk is gone and the ride is much stiffer. Now I have a rattle that is audible when going over bumps at speeds under 25 mph. The rattle occurs from each rear wheel and appears to come from behind either the passenger or drivers head depending on which wheel is hitting the bump. I think the noise is being transmitted up by the shocks. Has anyone had such a problem after changing to the stiffer track arms? Any assistance would be appreciated.

dragonflyoh is offline   Reply With Quote
Old 05-09-2010, 04:29 PM   #2
Registered User
 
ChrisZang's Avatar
 
Join Date: Mar 2006
Location: San Carlos, CA 94070
Posts: 1,450
did you replace them with "race" arms, which have no nylon bushings but metal bushings. In this case the noise would be normal
__________________
I still wave at Boxsters, but they no longer wave back :-(
2002 Boxster S "Violet" (sold but not forgotten)
2009 Carrera 4S "Kelsey" (current ride)
2015 FIAT 500e "Nikki" my commuter car
ChrisZang is offline   Reply With Quote
Old 05-09-2010, 07:09 PM   #3
Registered User
 
Join Date: Sep 2006
Location: California
Posts: 713
Quote:
Originally Posted by dragonflyoh
I replaced my upper rear track arms, that were causing a clunk, with adjustable arms from Hardrace on my 55K mile 2003 boxster. The clunk is gone and the ride is much stiffer. Now I have a rattle that is audible when going over bumps at speeds under 25 mph. The rattle occurs from each rear wheel and appears to come from behind either the passenger or drivers head depending on which wheel is hitting the bump. I think the noise is being transmitted up by the shocks. Has anyone had such a problem after changing to the stiffer track arms? Any assistance would be appreciated.
Those arms shouldn't really make that much of a noticeable change as to what you're describing.

Double check that you have tightened down the locking nuts properly on the adjustable ends, and that they're not touching anything else.
__________________
http://farm4.static.flickr.com/3420/...90927559_o.jpg

Some stuff for sale: M030 S 24mm front sway bar, M030 base 19.6mm rear sway bar, 996 GT3 OEM Porsche Motorsport front strut mounts monoball "camber plates"

WTB: looking for some 5-7mm spacers with extended bolts
chaudanova is offline   Reply With Quote
Old 05-09-2010, 11:58 PM   #4
Registered User
 
Join Date: Aug 2009
Location: Nottingham, UK
Posts: 73
Sounds like the same problem on mine??

I was told by Zentrum that it is the "Lower Control Arm Bushes" that are the cause, they crack or corrode and will rattle like mad, especially if you drive over cobbles. It should not cause any handling issues though.

I was also told that you can't physically see the problem on the bushes and it only manifests when assembled and the car is moving.

http://www.hartech.org/parts.html do a 90 replacement part which I will try someday otherwise its a 200 part if going original.

Was told to get both rear sides done as they often go together.
Anim is offline   Reply With Quote
Old 05-10-2010, 04:24 AM   #5
Registered User
 
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,241
Dragonflyoh, those lower, longest track arms do go out and cause the noises you are speaking of. Might be the newer, tighter adjustable uppers are giving the lowers the room they need to rattle now. It's always a slippery slope.

Vertex sells them with polyurethene bushings that should not wear out as fast as factory ones:

http://www.****************************************.com/ShowItem/128301%20Porsche%20Rebuilt%20Control%20Arm%20-%20Rear%20Track%20Arm.aspx
__________________
'97 Boxster (Black Hole for 42,000 Dead Presidents and counting) - 122k
New motor, transmission, suspension, and on and on and on it goes...

Last edited by RandallNeighbour; 05-10-2010 at 04:28 AM.
RandallNeighbour is offline   Reply With Quote
Old 05-10-2010, 12:00 PM   #6
Registered User
 
Join Date: Oct 2009
Location: USA
Posts: 43
The part I replaced is index number 8 in the attached drawing. I was thinking I might hear from someone that actually replaced their arms with the adjustable arms and hear what sort of experience they had. I am thinking RandallNeighbour may be on to something with the slippery slope. RandallNeighbour are you saying that index 17 may be causing the noise?
dragonflyoh is offline   Reply With Quote
Old 05-10-2010, 01:34 PM   #7
Registered User
 
ppbon's Avatar
 
Join Date: Nov 2005
Location: Florida
Posts: 529
Many times the rattle comes from...

... worn drop links.
If you can manually twist the droplinks with the car on its wheels, they're probably toast.
Good droplinks should be very difficult to move by hand because the joints are tight. After the joints wear they can generate a loud rattle when going over bricks, pavers, etc.

Happy Boxstering,
Pedro
__________________
Racecar spelled backwards is: Racecar!
ppbon is offline   Reply With Quote
Old 05-10-2010, 02:06 PM   #8
Registered User
 
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,241
Dragonfly, ignore what I wrote above. I didn't realize you bought an adjustable trailing arm (#8)... I though you'd replaced #17 with an adjustable unit (that's what I did).

Sorry about that.

Do test your drop links according to Pedro's advice. That's a good word from him.
__________________
'97 Boxster (Black Hole for 42,000 Dead Presidents and counting) - 122k
New motor, transmission, suspension, and on and on and on it goes...

Last edited by RandallNeighbour; 05-10-2010 at 02:11 PM.
RandallNeighbour is offline   Reply With Quote
Old 05-11-2010, 07:25 AM   #9
Registered User
 
Join Date: Oct 2009
Location: USA
Posts: 43
Drop Links

Thanks for the help.
I was able to move the drop links, with WOW, and using gloves. Not a lot of motion but enough that I will replace them. I found them on E-bay,(Deutsche has a pair of drop links for $67), Pelican, and requested pricing from Sunset. I shall replace the torsion bar bushings at the same time.
I shall post the results.
dragonflyoh is offline   Reply With Quote
Old 05-11-2010, 08:01 AM   #10
Registered User
 
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,241
Dragonfly, read this carefully:

RUN AWAY FROM DEUTSCHE PARTS ON EBAY.

Their stuff, especially their drop links, are total crap. I know this from repeated personal experience. Learn from my failures.

Buy factory parts unless you have $$$ to spend per corner for Tarrett Engineering fully adjustable ones.

Check with Sunset Imports in Oregon. They sell at 10% over their hard cost plus shipping. Sometime they are a LOT cheaper than anyone else.
__________________
'97 Boxster (Black Hole for 42,000 Dead Presidents and counting) - 122k
New motor, transmission, suspension, and on and on and on it goes...
RandallNeighbour is offline   Reply With Quote
Old 05-11-2010, 08:59 AM   #11
Registered User
 
Join Date: Oct 2009
Location: USA
Posts: 43
RandallNeighbour,
Thanks for the warning. After I posted my comment I did some searching on DEUTSCHE and decided they were off my list. I read some of your comments as well as from owners of several different models of automobiles and they were all in agreement with your assessment. I shall see what Sunset comes up with. Thanks again.
dragonflyoh is offline   Reply With Quote
Old 05-11-2010, 01:43 PM   #12
Registered User
 
Join Date: Apr 2006
Location: nj
Posts: 389
You might also want to consider these as a better alternative to new factory drop links.

http://www.tarett.com/items/boxster~cayman-products/986-987-rear-drop-link-set-986rdlnk-detail.htm
gschotland is offline   Reply With Quote
Old 05-11-2010, 08:00 PM   #13
Registered User
 
Join Date: Dec 2006
Location: Santa Barbara, CA
Posts: 308
After reading this thread, I think my car needs drop link replaced.
has anyone looked into Powergrid.inc adjustable drop links?
sb01box is offline   Reply With Quote
Old 09-17-2010, 09:40 AM   #14
Registered User
 
Join Date: Oct 2009
Location: USA
Posts: 43
After changing the drop links and the track control arms, # 9 on the drawing in a previous post, all is well. Just need to get a four wheel alignment. The ball joints on the track control arm were sloppy loose. Now I hear a couple of other rattles that will require some looking after. Thanks for the support.
dragonflyoh is offline   Reply With Quote
Old 09-17-2010, 10:22 AM   #15
Registered User
 
Join Date: Mar 2006
Location: Orlando, FL
Posts: 998
Whoa! so THAT is what is making the rattling! I have just been living with it. Now I know what to replace, thank you gents!
__________________
kabel

Orlando - 99 BMW M Coupe (autocross toy), '11 Mazdaspeed 3 (dog hauler), '99 10AE Miata (the new daily driver)
kabel is offline   Reply With Quote
Old 10-25-2010, 05:06 AM   #16
Registered User
 
Join Date: Mar 2006
Location: Orlando, FL
Posts: 998
Replaced all my end links, front and back. I am enjoying a much quieter ride these days. Though now I can hear that the tires are nearing the end of their life... fix one thing only to discover something else

__________________
kabel

Orlando - 99 BMW M Coupe (autocross toy), '11 Mazdaspeed 3 (dog hauler), '99 10AE Miata (the new daily driver)
kabel is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 07:54 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page