14 replies to this topic

[Heath]

The more efficient swaybar design is actually what a UC Torana has. It is a smaller bar that acts directly on the floorpan and axle tubes... this is what basically every conventional live axle car has.

The standard LX SLR rear swaybar is that really weird design where it goes from one arm to another, and that's why it has to be so thick to do anything. Shit design lol.

 

If you're happy to add some swaybar mounts to your floorpan, you can install a UC style one (but really it could be from a different model of car, I think you can actually run a Commodore one without welding any brackets on but I could be wrong) 

 

This thread below shows one that uses the standard upper arms as upper swaybar mounts... cool! No welding on the floor in that instance.

http://www.gmh-toran...-rear-sway-bar/

Although I personally don't like the look of the 'clamp-on' swaybar mounts on the axle tubes. They work but they're pretty ugly.

The BW diff probably would have had some kind of swaybar mounts underneath, unless they were cut off during the diff conversion.

[Peter UC]

Or you could just not run one. I've tried mine with and without back to back on the track and I just find it's less likely to lift the inside rear wheel with the sway bar. Times were also slightly faster without and was easier to drive.

[76lxhatch]

Mine is a Commodore one, I straightened the ends in the press and just mounted the links to the upper arm mounts (forward of the arm pivots so plenty of clearance).

 

 

Gives you a choice of 12, 14, 16, 18mm bars for next to nothing.

[claysummers]

I fitted an XK to XC Ford Whiteline bar to my LC rear axle in FB ute recently. I compared it to a UC rear bar that I have and it is essentially the same shape, other than around the diff pumpkin. The Ford diffs must have the pinion centred, with the crownwheel offset so the allowance in the bar is correspondingly offset, but it isnf reslly noticeable. A friend fitted the same Whiteline bar to a 9" in his EK sedan.

The UC bar is only about 13mm, whereas the Whiteline is more like 18mm. I welded mounts to the housing and chassis rails inside. My poi t is that if the UC bar gits then so will the Ford one.

early Holden nut

[dattoman]

Mine is a Commodore one, I straightened the ends in the press and just mounted the links to the upper arm mounts (forward of the arm pivots so plenty of clearance).

 

 

Gives you a choice of 12, 14, 16, 18mm bars for next to nothing.

 

Which Commodore ?

[76lxhatch]

VB-VP (probably VR-VS also) live axle are all the same as far as I know, just varying diameter. Find an earlier car for thinner ones, VN/VP definitely have the 18mm option. Not sure how they decided which sub-models got what, some of the chunkiest bars I've seen were on four cylinder cars

[S pack]

The more efficient swaybar design is actually what a UC Torana has. It is a smaller bar that acts directly on the floorpan and axle tubes... this is what basically every conventional live axle car has.

The standard LX SLR rear swaybar is that really weird design where it goes from one arm to another, and that's why it has to be so thick to do anything. Shit design lol.

The LH/LX 8VD have a rear anti-sway bar.

The UC Torana has a rear anti-roll bar.

Different animals for different outcomes.
 

[claysummers]

Elaborate Dave?

early Holden nut

[S pack]

Elaborate Dave?

early Holden nut

Anti-sway bars do not have links connecting the stabilizer bar to the body of the vehicle, therefore they have little to no control over body roll, anti-roll bars do.
 

[claysummers]

Anti sway bars are useless in other words

early Holden nut

[S pack]

Anti-sway bars are not useless, they still improve the handling characteristics of the vehicle. Anti-roll bars are just better, that's why most teams ditched the front anti-sway bars on their XU1's under group C rules in 1973 and installed anti-roll bars.

Edited by S pack, 27 August 2021 - 08:40 AM.

[claysummers]

early Holden nut

[bat 53]

after doing bw diff conversions in early holdens ,

i would reshape the sway bar to suit ,then have it rehardened