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

Reply
 
LinkBack Thread Tools Display Modes
Old 01-30-2020, 02:44 PM   #1
Registered User
 
truegearhead's Avatar
 
Join Date: Jul 2011
Location: Richmond, VA (The Fan)
Posts: 835
Extended ball joints to lower car without effecting roll center

Iím running coilovers and elephant racing control arms with removable ball joints and was wondering if anyone has installed longer ball joints to lower the car further without effecting suspension geometry and the roll center. Itís a common practice on stockcar racing and other racing but Iíve never heard of it with Porscheís. I emailed Elephant Racing and they say they donít support it. They use common ball joints so I could just buy extended ones but man the risk of having something brake scares me... that being said itís a common practice elsewhere. Has anyone done this?



__________________
1997 2.5 Boxster NASA Time Trial track car
2003 911 C2
NASA HPDE Instructor
truegearhead is offline   Reply With Quote
Old 01-31-2020, 05:57 PM   #2
Registered User
 
LAP1DOUG's Avatar
 
Join Date: Aug 2011
Location: USA
Posts: 414
Quote:
Originally Posted by truegearhead View Post
Iím running coilovers and elephant racing control arms with removable ball joints and was wondering if anyone has installed longer ball joints to lower the car further without effecting suspension geometry and the roll center. Itís a common practice on stockcar racing and other racing but Iíve never heard of it with Porscheís. I emailed Elephant Racing and they say they donít support it. They use common ball joints so I could just buy extended ones but man the risk of having something brake scares me... that being said itís a common practice elsewhere. Has anyone done this?

I wouldn't do that - These ball joint studs are under significant stress.

Early on, another manufacturer of aftermarket lower control arms (RSS) had a problem with the ball joint studs breaking. They were originally designed with an abrupt change in diameter at the bottom of the threads, which caused a stress raiser. RSS recalled them all, and sent out new ones with a chamfered transition similar to the Elephant ones, free of charge.

Obviously this anecdote is a bit different than your proposed change, but it does show that these studs are highly stressed in single shear.

__________________
Kippis

986S
991S
Van Diemen RF97
LAP1DOUG 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 11:52 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