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Rear Sway Bar on 9" diff


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#1 _Keithy's_UC_

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Posted 10 April 2007 - 11:16 AM

Hey guys,

I've fitted my new 9" and she looks tops, but there's just one thing lacking... a sway bar!

The Salisbury had one on it, handled beautifully. Two questions remain...

1. Are there off-the-shelf sway bar kits for the UC and 9" combination?

and

2. Will the lack of sway bar make my car more unstable around corners (i.e. body roll)?

I have a feeling that it's gonna make the old girl a slop to drive around corners, which i'm not keen on as i love the way they handle.

Does anyone have a sway bar on their 9", and if so are there many costs or fabrication work involved?

Cheers
Keith

#2 arrimar

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Posted 10 April 2007 - 11:44 AM

keith,
i had a selbys bar with a banjo.
floor mount not trailing arm.
took it off ,put 9 inch in ,bolted it back on.
so far so good.


with banjo
Posted Image


with banjo
Posted Image

with 9 inch
Posted Image

#3 makka

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Posted 10 April 2007 - 12:17 PM

I reckon your standard bar would fit as Arri's has, thats what im gonna try do with my 9 inch.
for the record, my car has no swaybars on it

#4 _trna76hb_

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Posted 10 April 2007 - 01:36 PM

When i fitted a 9 inch in my Lx, i used the sway bar that mounts to the lower control arms. I had to redrill the mounting holes back about 20mm to clear the diff
bulge in the back of the housing. Welded up the original holes & boxed the control arms.

ian

#5 MRLXSS

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Posted 10 April 2007 - 03:12 PM

yeah, i tried to fit my old sway bar and it JUST didnt fitt, it rubs on a small section... Im not going to bother trying to make it fit, ill just get my front one fitted and it should be ok

#6 TerrA LX

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Posted 10 April 2007 - 03:47 PM

generally, on average driving your shocks and springs take the ride but when you get into it sway bars start to transfer the roll diagonally across the car so if your car understeered heavily (in the front) you may be happy the rear bar is gone.
there is a lot more to it but i hope that makes sense.
anyway i am sure one could be modded to fit if you need it.

#7 FastEHHolden

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Posted 10 April 2007 - 04:02 PM

my car has no bars in front or back..but thats cos its an ex drag car..doesn't matter..it has to start first.

I too am interested in finding a solution.

#8 _v8slrtorana_

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Posted 10 April 2007 - 05:57 PM

I have the Whiteline #BHR37 on my 9". It clears, just.
Ill get pics if you want.

#9 ls2lxhatch

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Posted 10 April 2007 - 07:45 PM

I have the Whiteline #BHR37 on my 9". It clears, just.
Ill get pics if you want.

Did you check the clearance with the suspension bottomed out? At normal ride height my sway bar cleared the 9" but it did hit the 9" before the suspension bottomed out. I had to move the sway bar mount holes on the trailing arms back 10 mm to provide sufficient clearance.

#10 _v8slrtorana_

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Posted 10 April 2007 - 07:55 PM

I have the Whiteline #BHR37 on my 9". It clears, just.
Ill get pics if you want.

Did you check the clearance with the suspension bottomed out? At normal ride height my sway bar cleared the 9" but it did hit the 9" before the suspension bottomed out. I had to move the sway bar mount holes on the trailing arms back 10 mm to provide sufficient clearance.

My std swaybar did hit the 9" dome, never did think of relocating it backwards.
My whiteline mounts the same as arrimar's ^^
Or look here my exhaust page
Ive also got the decoupled?? (right word??) type.

#11 arrimar

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Posted 10 April 2007 - 08:18 PM

selbys/whiteline
same same isnt it

#12 Litre8

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Posted 10 April 2007 - 08:23 PM

Rear facing K-Mac bar should fit ok.

#13 _HatchmanSS76_

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Posted 10 April 2007 - 10:19 PM

I think you'll notice the lack of a rear bar after driving around with one for so long.
I never had one on mine with either of the 9 inch diffs and didn't really notice the lack of one until I put the CRS chasis kit in and than it was very noticeable when pushing the car hard. Felt the lack of one on the corner before I wreaked the car.

Just to stray off topic afraction as well rather than starting a new post.
What is the ideal set up for optimum handeling.
Floor mound sway bay as in the first pics or trailing arm mounted bar?

Edited by HatchmanSS76, 10 April 2007 - 10:22 PM.


#14 Litre8

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Posted 11 April 2007 - 10:11 AM

From what I have heard the trailing arm mounted sway bar was the least effective, hence it is usually much large diameter than either the rear facing or the de-coupled styles.

#15 _Keithy's_UC_

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Posted 11 April 2007 - 02:54 PM

Cheers for the advice guys!

Not saying that i ever push my UC to the extreme around corners (quite the opposite - i'm a grandma behind the wheel, ask Sarsha and Nathan!!), but at the moment it handles so beautifully... I have it set-up to how i like it. Front and rear sway bars are perfect. I like cornering with no body roll, and in the off-chance my car under/oversteers i'd really like the predictability that the sway bar offers in comparison to the unpredictability of sudden under to oversteer due to excessive rear body roll.

I'll investigate wether my salisbury sway bar will fit back on there, but i guarantee i'll need to fabricate some mounts before that'll happen, and i'm not keen on welding things to my axle tubes.

Cheers
Keith

Edited by Keithy's_UC, 11 April 2007 - 02:54 PM.


#16 _Chamois hatch_

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Posted 11 April 2007 - 03:57 PM

have you tride places like pedders? i know they make rear bars for BW diffs maybe they do 9inch as well? i'll be looking into this soon as well. so let us know what you find.

cheers

#17 _Keithy's_UC_

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Posted 12 April 2007 - 10:41 AM

I generally deal with Fulcrum Suspension, so i'll suss out what they have. They are big on the aftermarket and KONI industry, so they may be able to help me.

I'll update this thread with my findings...

Cheers
Keith




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