How to lower a torsion bar accuratly?

[RS Williams]

Having looked through this lowering guide

http://www.retro-renault.com/forums/engine-mechanical/37-enclosed-rear-torsion-bar.html

i know how to lower the torsion bar, but what I dont no is how to do it accuratly, anybody know? because that guide, usefull as it is dose not help if you want to lower the back 35mm because it seams to vage. Well to me!

Thanks

 

[Final Maxim]

did mine with guess work, trial n error.

do 1 side, get it sitting how you want then get the other side to match

 

[donsrno1]

Basically:

• Measure distance from hub to arch
• Remove bar and raise hub by the amount you want to lower the car plus a little bit more as it never goes as much as it is first raised
• Put bar back in and do the same on the other side
• Once both sides have been done re-measure the hub to arch distance and check how it compares to the original measurement. The car will be lowered by the difference between the two measurements
• If necessary repeat till you get it as you want

 

[RS Williams]

Basically:

• Measure distance from hub to arch
• Remove bar and raise hub by the amount you want to lower the car plus a little bit more as it never goes as much as it is first raised
• Put bar back in and do the same on the other side
• Once both sides have been done re-measure the hub to arch distance and check how it compares to the original measurement. The car will be lowered by the difference between the two measurements
• If necessary repeat till you get it as you want

Ahh that makes more sens to me thanks, so just push the hub up while the damper is on? or off?

 

[donsrno1]

I've always done it with the damper on but it can be done with it off by removing the lower mounting bolt. I just use a jack to raise/lower the hub as it makes it easier to adjust it accurately.

 

[nath17t]

Basically:

• Measure distance from hub to arch
• Remove bar and raise hub by the amount you want to lower the car plus a little bit more as it never goes as much as it is first raised
• Put bar back in and do the same on the other side
• Once both sides have been done re-measure the hub to arch distance and check how it compares to the original measurement. The car will be lowered by the difference between the two measurements
• If necessary repeat till you get it as you want

Ahh that makes more sens to me thanks, so just push the hub up while the damper is on? or off?

makes no differance
and remember the back will settle about 15mm in the first two weeks of driving it

 

[RS Williams]

and remember the back will settle about 15mm in the first two weeks of driving it

right so if i want to go about 35-40mm lower it about 20-25mm an then itll settle down to the right hight?

 

[donsrno1]

and remember the back will settle about 15mm in the first two weeks of driving it

right so if i want to go about 35-40mm lower it about 20-25mm an then itll settle down to the right hight?

Tbh I've never found it to settle any noticable amount on the back so lower it to the amount I want, but then again I suppose I've never paid a huge amount of attention to it really. Either way there is always a bit of trial and error involved and I quite often redo it a couple of times till I get it to the exact heigh I want it.

 

[RS Williams]

Right thanks guys!
Once i get those springs ill get it done!