XJ XJ8 / XJR ( X308 ) 1997 - 2003

Does XK8 rear antiroll bar /bracket bolt on?

Thread Tools
 
Search this Thread
 
  #1  
Old 04-04-2019, 12:43 PM
Ungn's Avatar
Veteran Member
Thread Starter
Join Date: Jan 2016
Location: Southlake, TX
Posts: 1,177
Received 375 Likes on 309 Posts
Default Does XK8 rear antiroll bar /bracket bolt on?

I was going to jack both my Jags up and check for myself, but does anyone know if the rear bracket / Anti-sway bar mount / Anti-sway bar from an XK8 will bolt onto an XJ8?

I didn't own my XJ the last time I ran across and XJR in the junkyard. but there seems to be lots of people parting out XK8's locally

My XJ8 has got a mild shock mount clunk, so I know there is a weekend dedicated to the rear suspension in my future. While its up in the air, I'd like to put a rear anti-roll bar on it..
 
  #2  
Old 04-04-2019, 02:02 PM
Highhorse's Avatar
Veteran Member
Join Date: Feb 2013
Location: Trying to escape Central Florida
Posts: 4,636
Received 1,769 Likes on 1,303 Posts
Default

There was a discussion a number of years back I was involved in that evolved into sway bars. The thing was my Vanden Plas (XJR CATS suspension) didn't have a sway bar, but another member did...I don't recall their year or X308 version. The Q was why one did one have and another not?...it was never answered. So I would question 2 things, ...1-will that X308 have a sway bar and 2-wil it fit on yours? If I recall, the mounting patterns were different also. Food for thought...
 
  #3  
Old 04-04-2019, 03:29 PM
Ungn's Avatar
Veteran Member
Thread Starter
Join Date: Jan 2016
Location: Southlake, TX
Posts: 1,177
Received 375 Likes on 309 Posts
Default

The SWB 2002 XJR at the Junkyard that I pulled the alternator & 13" front brakes/front hubs off of had a rear anti-sway bar, but it was crushed about 4 months before I bought my XJ8. Driving my XJ8, I constantly am thinking "this thing could use a rear sway bar"
 
  #4  
Old 04-04-2019, 04:28 PM
Carnival Kid's Avatar
Veteran Member
Join Date: Jan 2018
Location: Redding CA
Posts: 1,841
Received 1,008 Likes on 613 Posts
Default

Originally Posted by Highhorse
There was a discussion a number of years back I was involved in that evolved into sway bars. The thing was my Vanden Plas (XJR CATS suspension) didn't have a sway bar, but another member did...I don't recall their year or X308 version. The Q was why one did one have and another not?...it was never answered. So I would question 2 things, ...1-will that X308 have a sway bar and 2-wil it fit on yours? If I recall, the mounting patterns were different also. Food for thought...
Not sure Highhorse, but I think it is just the VDPs that don't have the rear sway bar?
 
  #5  
Old 04-04-2019, 05:00 PM
avern1's Avatar
Veteran Member
Join Date: May 2012
Location: Winchester, CA
Posts: 3,290
Received 1,317 Likes on 1,004 Posts
Default

If I am reading correctly the poster has an XJ8 and wants to install and XK8 rear anti sway bar. ?? If so then it will not work. First the XJ8 doesn't have a rear sway bar only the XJR has one. If he has an XJR the XK8 still will not work, the wheelbase is not the same.
If he is asking if the brackets for the bushings are interchangeable they aren't 2 different diameters for bushing and bar.
 
The following users liked this post:
Highhorse (04-04-2019)
  #6  
Old 04-04-2019, 06:22 PM
ixfn's Avatar
Senior Member
Join Date: Dec 2010
Location: Portland, OR
Posts: 113
Received 89 Likes on 50 Posts
Default

  1. Ungr, if your XJ is not equipped with a factory sway bar you will need to replace your wishbone tie with one that has a provision for one from an XJR or XK.
  2. The XK sway bar does fit an XJ and is two MM larger with a slight design change (17mm vs 15mm).

Wishbone tie comparison.

XJ top, XK bottom.
 
The following 2 users liked this post by ixfn:
Highhorse (04-04-2019), Ungn (04-04-2019)
  #7  
Old 04-04-2019, 06:26 PM
Carnival Kid's Avatar
Veteran Member
Join Date: Jan 2018
Location: Redding CA
Posts: 1,841
Received 1,008 Likes on 613 Posts
Default

To confirm avern1's post, looking at the parts lists, it does not list a rear sway bar for the XJ8 or XJ8 VDP, only for the XJ8 SC (and three different front sway bars XJ8 comfort suspension, XJ8 sport suspension, and SC)
 
The following users liked this post:
Highhorse (04-04-2019)
  #8  
Old 04-04-2019, 09:13 PM
Ungn's Avatar
Veteran Member
Thread Starter
Join Date: Jan 2016
Location: Southlake, TX
Posts: 1,177
Received 375 Likes on 309 Posts
Default

Originally Posted by avern1
If I am reading correctly the poster has an XJ8 and wants to install and XK8 rear anti sway bar. ?? If so then it will not work. First the XJ8 doesn't have a rear sway bar only the XJR has one. If he has an XJR the XK8 still will not work, the wheelbase is not the same.
If he is asking if the brackets for the bushings are interchangeable they aren't 2 different diameters for bushing and bar.
By "bracket" I meant the wishbone tie bracket. This swap looks totally feasible as there are lots of people parting out XK8's on Craigslist and I'm sure the rear sway bars aren't a hot item.
 
  #9  
Old 04-04-2019, 10:17 PM
Ungn's Avatar
Veteran Member
Thread Starter
Join Date: Jan 2016
Location: Southlake, TX
Posts: 1,177
Received 375 Likes on 309 Posts
Default

I found an Xk8 Wishbone Tie bracket on E-bay for $65 shipped, I'll let everyone know how it works out.
 
The following users liked this post:
A.J.P (04-05-2019)
  #10  
Old 04-07-2019, 08:19 PM
Ungn's Avatar
Veteran Member
Thread Starter
Join Date: Jan 2016
Location: Southlake, TX
Posts: 1,177
Received 375 Likes on 309 Posts
Default

Found an XK8 rear swaybar on E-bay for $35 shipped... That's like "$15+shipping". Rockauto had links on closeout for $1.50 each, now I just need brackets and bolts. The whole projects looks like its going to come in under $130.

I'll post pictures when the parts all come in.
 
  #11  
Old 04-08-2019, 08:43 PM
Ungn's Avatar
Veteran Member
Thread Starter
Join Date: Jan 2016
Location: Southlake, TX
Posts: 1,177
Received 375 Likes on 309 Posts
Default

My Ebay Tie Bracket showed up Today (amazing 2 day shipping). The bar should show up before the weekend so I can mock it up off the car..


I'll scuff it and repaint it before I bolt it in.
 
  #12  
Old 04-11-2019, 01:27 PM
vincent661983's Avatar
Veteran Member
Join Date: Oct 2010
Location: New York
Posts: 1,372
Received 152 Likes on 131 Posts
Default

why dont get the bars from Ultra Racing?
 
  #13  
Old 04-20-2019, 10:15 PM
Ungn's Avatar
Veteran Member
Thread Starter
Join Date: Jan 2016
Location: Southlake, TX
Posts: 1,177
Received 375 Likes on 309 Posts
Default

I put in my new Rear Bilstein shock today and while the springs were out I attempted to swap in my XK8 tie bracket but I ran out of daylight, so I bolted everything back together. It just didn't want to slide onto the tie mounting studs:



I'm going to grab some XK8 Tie Studs from the junkyard and verify they are the same. The parts catalogs say they are, but was very tricky trying to bolt the XK8 tie bracket on. It did not want to go onto the Studs

Maybe next time I'll disconnect the exhaust pipe mounts and drop the entire rear end out to have more leverage.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SD96XJ6L
PRIVATE For Sale / Trade or Buy Classifieds
0
06-15-2016 06:10 PM
XJ8JR
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
6
10-21-2015 12:04 PM
jimlombardi
XJ XJ8 / XJR ( X308 )
1
11-03-2014 07:35 PM
splev
S-Type / S type R Supercharged V8 ( X200 )
2
10-17-2013 09:33 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: Does XK8 rear antiroll bar /bracket bolt on?



All times are GMT -5. The time now is 03:37 PM.