Custom Anti Roll Bar- Cheap opportunity!

Classeparts sometimes have them listed on ebay, but not currently I think I saw one 6 months or so ago. And they are "not cheap".....
 
Hi
I thought i would add my experience on uprated roll bars.
I purchased 3 uprated ones from Alan at class parts about 3 years ago,fitted one to my dads 3500 and one to my friends 3500s .
Both cars were in standard spec and once fitted noticed a big improvement when driving on roundabouts. Will prob work better with wider wheels or other suspension mods.
Been in garage tonight and measured my spare bar.its 25 mm.
Not sure if he is still selling them.
cheers clive.


Hi Clive, it's good to see your corroboration of improvement with the larger 25 mm bar.
24 and 25 mm seem to be about the maximum you can squeeze out of the P6 mounting and placement area with my understanding that Alans bar machines the Hex at an offset to the axis of the bar to give it the room to fit in the space, the 24 doesn't require that.
Its a bit concerning to see that people think that a larger bar will upset the fine riding characteristics of the p6 geometry,this I have found to NOT be the case with no loss of ride quality other than a very pleasant reduction in body roll in cornering making the P6 an even better quality ride.

Graeme
 
Hi,

24mm is a common 306 abr, by any chance is there an M8 (maybe M6) hole in either end of Alan's abr?

We did off set the hex slightly on our bar, the machining is very straight forward.

Tim
 
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Hi Tim
There is no tapped hole in the ends. i work for peugeot/citroen dealer never thought of looking at rear anti roll bars. shame as i can remember parts dept chucking out a few of them as body shops not using when changing beam/arm assembly.
The 25 mm bar fitted my dads car was fine but had to slightly reduce/modify seam on area near steering box on my mates 3500s for clearance when on going over bumps.
clive.
 
Hi,

The lack of taped holes is interesting, I always wonder if Alan was sorcing his material the same place as we did, the 306 bar is an inch or so too long from memory so when you cut it too length some of the threaded hole remains, doesn't cause an issue but it's a tell tale sign of where the bar came from.

BTW you need no special tools to remove the abr from a 306, I don't even think you'd need to jack it up or remove the wheels!!!!

It's a real pitty that the same discussion is being duplicated on FaceBook, this is quite a technical subject and the FaceBook system really doesn't lend itself to this sort of thing..... just my opinion.

Tim
 
There is certainly no shortage of scrap 306's but it needs to be the Hdi doesn't it? What size is the standard 306 rear?
Peter I'm fairly sure the 406 Hdi rear bar is 22mm if you wanted to explore that option..
Jim
 
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Hi,

I can only comment on the 2 bars I sourced, when came from a Citroën ZX 2.0 16V and one came from a 306HDi, they were both 24mm. Maybe the lesser models have a thinner bar, I really don't know. As I say they are very easy to remove so pulling a few out in a breakers to have a look wouldn't be too hard? Maybe a Google search might dig up some info.?

Tim
 
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Right, I've sourced a 24mm Peugeot bar for £30 so I'm just gonna run with that for now.
Thanks Tim, I know you guys have been mentioning it all along.
I'll let you know how the machining goes at my friendly local engineer shop
Jim
 
This is all very interesting to read! I am thinking for my application for 2mm thicker I wouldn't bother...I'd save up for the more expensive thicker one, and if I found it makes handling understeery, not exactly scientific, but I'd add another 50lbs to the rear springs until it feels balanced again.
 
Hi Jim,


That's great news, good luck with the machining if we can help in any way let me know, it's obvious to us as we know what the bar is going to be used for but it may not be obvious to a machinist that the hex's at both ends need to be inline
C:\Users\ds5783\AppData\Local\Temp\msohtmlclip1\01\clip_image001.png


I've attached a couple of pics, one shows the offset clearing end on, the threaded hole is central on the bar. The second shows our version one bar with DOESN'T have the required radius's to prevent breaking, use much bigger radius's than this!!!! This pic does however show why offset cutting helps limit the amount of material you need to remove to create clearance, I have other pics that I can send you off line if needs be, I can take pics of the current bar (Vaultsman's bar, very well made) on the car.

Let's get this right and document it well so others can follow :)

Alex - I'm not sure I follow? The 24mm bar is a substantial increase over the ~18mm standard one. I also believe it will also be understeer you’ll be trying to reduce by stiffing the rear.

Offset.jpg


Clearance.jpg
Tim
 
Hi Tim
Checked today on our citroen parts system on ZX models largest antiroll bar is 21 mm,
looks like peugeot is the way to go.
clive.
 
Hi Tim
Checked today on our citroen parts system on ZX models largest antiroll bar is 21 mm,
looks like peugeot is the way to go.
clive.

One of our bars definitely came out of a ZX 2.0L 16V, as it was my car and I only removed it to fit an even fatter one lol :) Peugeot ones do seem more common, plenty of 306 HDi's about.

Tim
 
It's the gti6 model you want, well that's where mine is coming from..
If mine all goes well and people still don't want to source their own bar and get it machined, I may consider getting a run of them done just for interested forum members. It wouldn't have any kind of guarantee and to be used at your own risk etc etc if that were to happen.
Jim
 
It's the gti6 model you want, well that's where mine is coming from..
If mine all goes well and people still don't want to source their own bar and get it machined, I may consider getting a run of them done just for interested forum members. It wouldn't have any kind of guarantee and to be used at your own risk etc etc if that were to happen.
Jim

Well that's good info., GTI6 or HDI so far :)

Tim
 
Apparently the later phase 2 gti6 had a 23.5mm bar, phase 1 and early phase 2 had the 24mm.
Not sure what constitutes an early or late phase 2 though!
Jim
 
Alex - I'm not sure I follow? The 24mm bar is a substantial increase over the ~18mm standard one. I also believe it will also be understeer you’ll be trying to reduce by stiffing the rear.

I was comparing the standard bar to the 19mm uprated one by Colin, which I don't see as that much of an increase. The 24mm sounds much more appealing :) And yes, that was my point, if I found the 24mm bar increases understeer, I'd stiffen up the rear some more by stiffer springs at the rear to balance it.
 
If mine all goes well and people still don't want to source their own bar and get it machined, I may consider getting a run of them done just for interested forum members. It wouldn't have any kind of guarantee and to be used at your own risk etc etc if that were to happen.

I think there will be quite a few takers if it's reasonably priced and not too much butchery was required.
 
Hi Alex,

Apologies, I was actually replying to a short lived post that suggested the car would oversteer after the bar was fitted, it seems to have been deleted.

If the hex is machined offset all the extra width is away front the bulkhead etc.. so there should be no need for cutting the car about. You will need to take a wing off to change the bar.

It appears Peugeot's have a mix of bar thicknesses, a 22mm bar might be quite a good size for an otherwise standard car?

With the greatest respect I don't see the value in a 19mm one.

Tim
 
Well I thought I may as well try and source a 25mm 306 roll bar to mod so I tried the ebay route with no luck, frustrated I started googleing 306 tuners and came up with a couple of companies.
First call I spoke to a guy called Steve who said he would make me a 25mm bar no problem, then the penny dropped, I said if you are going to make one can you sell me a straight piece of bar ?
He said - yes, what are you going to do with it ?
I said I am trying to improve a Rover P6, there then followed a long silence, Steve then said to me that he had drawings for these and had produced a sample for a Rover guy who had never come back to him with any feed back, nor had any money changed hands.
Understandably I was embarrassed at what is a pretty poor show IMHO and feel that If I was in his position I would be telling P6 owners to shove it.
But he is such a nice guy, in little over a week I have my rollbar, to the drawings he kept from what 2 1/2 years ago ?

So there you go Torsion performance 01162 710666

£130.00 delivered

And if its too mighty I'll try a thinner one.
001.JPG
 
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