Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

Reply
 
LinkBack Thread Tools Display Modes
Old 02-14-2015, 11:19 AM   #1
Registered User
 
Join Date: Jun 2011
Location: USA
Posts: 9
How much strut side to side movement is too much?

I'm working on my '01 Boxster S with 75,000 miles. If I grab the front strut just below the spring mount, I can move the front right strut in & out approx .035" based on the location of the dial indicator. The front left has about .030" movement and the rears are each about .005" following the same process.

The movement in the rear cannot be felt by hand, while the movement on the front right seems like too much.



The upper strut mounts are tight and there is no movement at the top of the strut shaft where it bolts to the upper mount. There is no leakage from any of the struts and the suspension is original to the car.

So the questions is, is this too much movement? Are the struts shot?

__________________
'01 Boxster S

Last edited by mreimler; 02-17-2015 at 07:04 AM.
mreimler is offline   Reply With Quote
Old 02-14-2015, 02:16 PM   #2
Registered User
 
woodsman's Avatar
 
Join Date: Feb 2013
Location: Land of naught
Posts: 1,302
Wow. Excellent investigation I must say. It SOUNDS like a lot to me and I know what .035" is. Do you think the movement is the lower ball joint or inner bushing/ mount? Does your car have any rattling while being driven?
__________________
Death is certain, life is not.
woodsman is offline   Reply With Quote
Old 02-14-2015, 03:18 PM   #3
Registered User
 
Join Date: Jun 2011
Location: USA
Posts: 9
Using a 24" pry bar I couldn't get any movement from the ball joints or bushings. I do get a clunk from the right front over bumpy roads at low speeds.
__________________
'01 Boxster S
mreimler is offline   Reply With Quote
Old 02-22-2015, 09:48 AM   #4
Registered User
 
Join Date: Jun 2011
Location: USA
Posts: 9
Anyone?

I'll also ask which Bilstein strut is most similar to the OE S suspension. Sport or HD?
__________________
'01 Boxster S
mreimler is offline   Reply With Quote
Old 02-22-2015, 09:34 PM   #5
Registered User
 
Steve Tinker's Avatar
 
Join Date: Dec 2008
Location: Queensland, Australia
Posts: 1,522
If I'm reading this right, you are able to push / pull the strut sideways by .035" (I can't see where your dial gauge is mounted to).
The strut shaft is bolted to the upper strut mount by the M14 central nut and the strut mount is bolted to the chassis by the 3 nuts you say are tight. The strut mount itself has a bonded rubber insert which can and does break away with age. Not an expensive item, but quite a lot of labour to replace.
The only other component up there is the strut bearing itself which can rust and wear and cause a knocking on rough roads. I'm willing to bet that these are your culprit. If you have the Bentley Boxster manual look @ page 40-5 for details.

Using a pry bar on the suspension bushes will reveal nil movement, even when they are worn. With 75,000 miles on your wishbones / drop links etc., there's bound to be some wear which shows up as a knocking or rattling over rough surfaces.

I replaced my 50,000 mile S suspension with PSS9's a few years ago and fitted new top mounts too as a precaution - the old ones looked OK & the bearings were fine, but I live in a warm dry climate which always helps....
Pity you don't live closer or you could have my old suspension & mounts cheap!

__________________
2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
Steve Tinker 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 09:59 PM.


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