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

Reply
 
LinkBack Thread Tools Display Modes
Old 02-17-2020, 07:49 PM   #1
Registered User
 
Join Date: Feb 2020
Location: australia
Posts: 1
Rear Suspension Clunk/noise

I have two Boxsters .Both 986 . Both cars at around same mileage 140000kms. BOTH cars have the same clunk over bumps .... i describe it as a flat clunk / rattling sound . In pursuit of the sound i have replaced engine mount, Macpherson struts and various rubbers on anti-roll bar etc ....no luck ... this noise persists. Is it a common fault as both my cars and one more friend's car all
have this same sound . Is it the trailing arms and if so which one ? Hope you can assist ryokan.

ryokan is offline   Reply With Quote
Old 02-18-2020, 03:55 AM   #2
1202021
 
piper6909's Avatar
 
Join Date: Jan 2019
Location: PA
Posts: 902
Track arms (the tuning forks). Replace both sides. You can't test them while they're on the car. The ball joint where it attaches to the body has a plastic bushing inside it that wears out and causes metal to metal noise. Unfortunately it's not a replaceable item, you have to replace the entire track arm.

https://www.pelicanparts.com/More_Info/98633104307M80.htm?pn=986-331-043-07-M80&bt=Y&fs=0&SVSVSI=1049
piper6909 is offline   Reply With Quote
Old 02-18-2020, 08:39 AM   #3
Racer Boy
 
Racer Boy's Avatar
 
Join Date: Sep 2015
Location: Seattle, WA
Posts: 792
What piper said!
Racer Boy is offline   Reply With Quote
Old 02-18-2020, 02:13 PM   #4
Registered User
 
Join Date: Apr 2011
Location: Alabama
Posts: 447
Re rear track arms

Agreed - very likely the track arms, and almost impossible to test short of just swapping them out.

I used the Vertex poly rebuilds on my 2001S and really have no complaints as compared to oem, although some have expressed some theoretical concerns in the past.

I have also heard the 987 track arms fit and work well. Does anyone know if they offer any advantage - real or theoretical - over the standard 986 version? I ask b/c I need to replace these soon on my 2004SE.

Thanks everybody for the collective wisdom.
BrokenLinkage is offline   Reply With Quote
Old 02-19-2020, 05:19 AM   #5
Registered User
 
Join Date: Sep 2016
Location: Stow, MA
Posts: 895
Garage
I have Cayman trailing arms on mine. Don't notice any difference.
__________________
2004 Boxster S Silver - FUNTOY
2002 Boxster Base Guardsy Red - FUNBOX
1987 Caterham Super 7 1700 Supersprint
2009 Mercedes Benz CLK 350 convertible
1941 Dodge Luxury Liner Coupe
Anker is offline   Reply With Quote
Old 02-20-2020, 06:35 AM   #6
Registered User
 
Join Date: Mar 2018
Location: Fort Langley
Posts: 102
Had the same issue on my 98 986 with 180k kms. Agree with everyone responses. Tuning forks will probably fix it.

I ended up doing the entire rear suspension seeing as I wanted to get it done anyways. Problem fixed!

Funny thing is that the tuning forks ball joints I removed look and "feel" fine. Anyways, problem solved.
__________________
----------------------------
98 Boxster - bringing it back to life and having fun doing it!
20 Harley Streetbob -
Zzorro is offline   Reply With Quote
Old 02-20-2020, 12:03 PM   #7
Registered User
 
Ciao's Avatar
 
Join Date: Dec 2015
Location: Denver
Posts: 782
Garage
Had the same issue and discovered a few bolts to the rear storage container were loose. But, it sounded like a suspension issue.
__________________
5280 Cruising @High Altitude
Seal Gray & K&N Filter
Ciao is offline   Reply With Quote
Old 02-20-2020, 05:06 PM   #8
Registered User
 
steved0x's Avatar
 
Join Date: Dec 2012
Location: FL
Posts: 3,991
Quote:
Originally Posted by Anker View Post
I have Cayman trailing arms on mine. Don't notice any difference.
I've got the Cayman arms on my 986 boxster and just put a pair on my 2009 Cayman, TRW JTC1316 from Amazon, price fluctuates but I got the latest pair for $78 each I think [edit was $68 each, score! Currently $89]. Crazy :,-)
steved0x is offline   Reply With Quote
Old 02-20-2020, 05:17 PM   #9
1202021
 
piper6909's Avatar
 
Join Date: Jan 2019
Location: PA
Posts: 902
Quote:
Originally Posted by steved0x View Post
I've got the Cayman arms on my 986 boxster and just put a pair on my 2009 Cayman, TRW JTC1316 from Amazon, price fluctuates but I got the latest pair for $78 each I think [edit was $68 each, score! Currently $89]. Crazy :,-)
WOW! Even at $89, that's $180/pair! F-in A man! Great price! I changed mine last year, though. Is there an equivalent substitute for the fronts?

I wonder why the site says they don't fit Boxsters, though.
piper6909 is offline   Reply With Quote
Old 02-21-2020, 08:22 AM   #10
Registered User
 
steved0x's Avatar
 
Join Date: Dec 2012
Location: FL
Posts: 3,991
Quote:
Originally Posted by piper6909 View Post
WOW! Even at $89, that's $180/pair! F-in A man! Great price! I changed mine last year, though. Is there an equivalent substitute for the fronts?

I wonder why the site says they don't fit Boxsters, though.
It's the 987 part # so my guess is Amazon doesn't know it's a match for 986. The part is very similar to the 986 part, bolt hole end to end it is the same length, the 987 part has a little more curve to it, maybe to give better clearance for the e-brake cable or maybe to give more clearance for bigger wheels?
steved0x is offline   Reply With Quote
Old 02-21-2020, 01:16 PM   #11
1202021
 
piper6909's Avatar
 
Join Date: Jan 2019
Location: PA
Posts: 902
Quote:
Originally Posted by steved0x View Post
It's the 987 part # so my guess is Amazon doesn't know it's a match for 986. The part is very similar to the 986 part, bolt hole end to end it is the same length, the 987 part has a little more curve to it, maybe to give better clearance for the e-brake cable or maybe to give more clearance for bigger wheels?
Thanks. My concern was if it would change the alignment/geometry, but if the bolt holes are exactly the same, then it shouldn't.

Like I said, I changed mine last year, but it's good to know there's a cheaper option if I should need them again.

piper6909 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 01:38 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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