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+--- Thread: Sagging torsion bars? (/showthread.php?tid=14478)
Sagging torsion bars? - ADV_93 - 07-06-2013
On my phase 1 d turbo, the car looks lower on one side than the other, and i changed the rear dampers recently for new ones, so thought the only thing that could cause this is one of the torsion bars sagging after the many years of use. Is this common in 306s of this age or anything?
Thanks
RE: Sagging torsion bars? - Connor - 07-06-2013
Nope its the trailing arm bearings failing
RE: Sagging torsion bars? - ADV_93 - 07-06-2013
(07-06-2013, 11:37 AM)Connor Wrote: Nope its the trailing arm bearings failing
Guess the money i was saving for a T2 is now gonna go on a new rear axle!
RE: Sagging torsion bars? - Chris_90 - 07-06-2013
i think it is your torsion bar sagging over time not trailing arm bearings, is there play in the arm? or any camber? my 106 is lower one side than the other and i believe that its the bar is gone softer over time or sagged..... gonna be lowering mine soon so goon lower one side more than the other to level it back up agin
RE: Sagging torsion bars? - ADV_93 - 07-06-2013
(07-06-2013, 12:43 PM)Chris_90 Wrote: i think it is your torsion bar sagging over time not trailing arm bearings, is there play in the arm? or any camber? my 106 is lower one side than the other and i believe that its the bar is gone softer over time or sagged..... gonna be lowering mine soon so goon lower one side more than the other to level it back up agin
When i did the rear shockers, i jiggled the f**k out of the rear wheels and there was no movement and no camber! But i was thinking it was a sagged torsion bar! That's not a bad idea tbf mate!
RE: Sagging torsion bars? - Chris_90 - 07-06-2013
(07-06-2013, 01:00 PM)ADV_93 Wrote:(07-06-2013, 12:43 PM)Chris_90 Wrote: i think it is your torsion bar sagging over time not trailing arm bearings, is there play in the arm? or any camber? my 106 is lower one side than the other and i believe that its the bar is gone softer over time or sagged..... gonna be lowering mine soon so goon lower one side more than the other to level it back up agin
When i did the rear shockers, i jiggled the f**k out of the rear wheels and there was no movement and no camber! But i was thinking it was a sagged torsion bar! That's not a bad idea tbf mate!
not bearings then, will be the bar either get some newer bars or just lower one side or lift the sagged side up should be a simple fix depending how easy the bars are to get out
RE: Sagging torsion bars? - ADV_93 - 07-06-2013
(07-06-2013, 01:20 PM)Chris_90 Wrote:(07-06-2013, 01:00 PM)ADV_93 Wrote:(07-06-2013, 12:43 PM)Chris_90 Wrote: i think it is your torsion bar sagging over time not trailing arm bearings, is there play in the arm? or any camber? my 106 is lower one side than the other and i believe that its the bar is gone softer over time or sagged..... gonna be lowering mine soon so goon lower one side more than the other to level it back up agin
When i did the rear shockers, i jiggled the f**k out of the rear wheels and there was no movement and no camber! But i was thinking it was a sagged torsion bar! That's not a bad idea tbf mate!
not bearings then, will be the bar either get some newer bars or just lower one side or lift the sagged side up should be a simple fix depending how easy the bars are to get out
Might just do the quick bodge and lower one side pal! Easy enough, I say "easy enough" getting the bars out is a nightmare
RE: Sagging torsion bars? - dizze stuff - 09-06-2013
I have some 21mm bars if your interested
RE: Sagging torsion bars? - cwspellowe - 09-06-2013
Only way to really tell is to measure the damper mounting bolts under no load. It would be rare for one side to sag, the suspension isnt independent and a lot of sag would be mopped up by the arb.
Id personally put money on it being the beam collapsing..
RE: Sagging torsion bars? - ADV_93 - 10-06-2013
(09-06-2013, 06:24 PM)dizze stuff Wrote: I have some 21mm bars if your interested
How much pal? Mine are well corroded in so i'm guessing they'd be a nightmare to get out!
(09-06-2013, 08:04 PM)cwspellowe Wrote: Only way to really tell is to measure the damper mounting bolts under no load. It would be rare for one side to sag, the suspension isnt independent and a lot of sag would be mopped up by the arb.
Id personally put money on it being the beam collapsing..
The bolt on the bottom of the shocker that connects to the axle? I've heard of torsion bars sagging, and there's no camber on the rear wheels?
RE: Sagging torsion bars? - Chris_90 - 10-06-2013
I don't understand how it can be the bearings going causing it to sag, I think over time it's lost its tension causing it to drop more should happen evenly really but maybe one side lost its tension quicker? But like you say anti roll bar should take some of it up, my 106 not got an anti roll bar so it's alot lower one side than other 50mm last time I got tape on it!
RE: Sagging torsion bars? - ADV_93 - 10-06-2013
I wasn't aware that 306's had a rear anti-roll bar, i thought it had 2 torsion bars, one for each wheel..
RE: Sagging torsion bars? - tigerstyle - 10-06-2013
(10-06-2013, 04:10 PM)ADV_93 Wrote: I wasn't aware that 306's had a rear anti-roll bar, i thought it had 2 torsion bars, one for each wheel..
Easy one!
The ARB is inside the thick (60mm ish) beam tube the torison bars go either side of this. Look at the DIY repair guides, all is explained in the photos.
RE: Sagging torsion bars? - Rippthrough - 10-06-2013
If the bearings are worn it will sag as the slight movement in the bearings is quite a lot more when it gets to the end of the arm, the space between the bearings and bars being so short.
RE: Sagging torsion bars? - Chris_90 - 10-06-2013
(10-06-2013, 10:12 PM)Rippthrough Wrote: If the bearings are worn it will sag as the slight movement in the bearings is quite a lot more when it gets to the end of the arm, the space between the bearings and bars being so short.
But if the bearings are worn wouldn't that cause play/camber on the trailing arm?
RE: Sagging torsion bars? - Rippthrough - 10-06-2013
Usually. It's not really normal for the bars to sag though unless someone has had a blowlamp on them to unsieze them, they're pretty lightly stressed as torsion bars go.
RE: Sagging torsion bars? - Chris_90 - 11-06-2013
(10-06-2013, 10:41 PM)Rippthrough Wrote: Usually. It's not really normal for the bars to sag though unless someone has had a blowlamp on them to unsieze them, they're pretty lightly stressed as torsion bars go.
Think i might get another axle then
good time to upgrade tho i superpose 
RE: Sagging torsion bars? - ADV_93 - 11-06-2013
(11-06-2013, 08:00 AM)Chris_90 Wrote:(10-06-2013, 10:41 PM)Rippthrough Wrote: Usually. It's not really normal for the bars to sag though unless someone has had a blowlamp on them to unsieze them, they're pretty lightly stressed as torsion bars go.
Think i might get another axle then
Just what i was thinking! Going to have to stick a GTi-6 rear beam on it at some point anyway!
RE: Sagging torsion bars? - dizze stuff - 11-06-2013
(10-06-2013, 01:51 PM)ADV_93 Wrote:(09-06-2013, 06:24 PM)dizze stuff Wrote: I have some 21mm bars if your interested
How much pal? Mine are well corroded in so i'm guessing they'd be a nightmare to get out!
(09-06-2013, 08:04 PM)cwspellowe Wrote: Only way to really tell is to measure the damper mounting bolts under no load. It would be rare for one side to sag, the suspension isnt independent and a lot of sag would be mopped up by the arb.
Id personally put money on it being the beam collapsing..
The bolt on the bottom of the shocker that connects to the axle? I've heard of torsion bars sagging, and there's no camber on the rear wheels?
£100 posted in the UK