Lowering My Mi

[Edp 67 3 Cars]

Im lowering my car in the next couple of weeks. I need to know how long (hole to hole) a dummy shock needs to be to lower the rear by about 35mm?

 

I have a dummy shock which is 315mm between each hole. Will this be ok?

 

By the way ive done a search and it was pants.

 

Cheers

[sonofsam 5]

http://forum.205gtidrivers.com/index.php?s...&hl=dummy+shock ... any help?

[Anthony 1,003]

I'd say a little less than 315mm - around 310-312mm would be a good place to start on 205 GTi 19mm torsion bars (and about 302-305mm on 309 GTi 20mm torsion bars) for 35mm drop.

 

One spline gives roughly 35mm drop as well if you can't free off both ends of the torsion bar and/or are feeling lazy

[Edp 67 3 Cars]

Well Graham says in that thread that 315mm looks standard so i guess the dummy ive got isnt any good. Cheers Anthony thats a great help.

Edited June 13, 2006 by Edp

[pug_ham 245 3 Cars]

It looked standard but that was after owning a run of lowered cars, in actual fact 315mm is lowered about 25-30mm, especially when compared to an actual standard ride height 205 GTi.

 

If you're not lowering it by the spline method then adjustment is easy enough anyway.

 

Graham.

[scotthall39 0]

I thought the only way to lower a torsion bar was thre spline method?

[GLPoomobile 958]

I thought the only way to lower a torsion bar was thre spline method?

 

Then you have come to the right forum Scott

 

Prepare to be enlightened (but not by me )

[Guest edcotic]

rookie question

 

if u lower the rear end by rotating the spline, is the rate of compression effected?

ie: is the torsion bar under different load?

 

Cheers

Ed

[pug_ham 245 3 Cars]

I thought the only way to lower a torsion bar was thre spline method?

Not at all, the ideal way & to allow the most adjustment is by having both ends of the torsion bar free from the radius arm & centre tube & setting the distance between the shock mounting bolt centres & then turning the torsion bar one spline at a time until it slides smoothly home with almost no resistance.

 

The "spline method" is the quickest way for a garage to do the job as it involves brute force to get the beam apart but the beams on the majority of 205 GTi's (+ now 106's & 306's) are beyond the time for this to be a quick & easy job, an easy money spinner when you return a week or two later with a dead rear beam after the rusted dried out trailing arm bearings have collapsed & your car is handling far worse than ever hopefed. If the diagnosis of the beam isn't already to far gone for them to be able to lower the beam in the first place without them rubbing their hands together with glee thinking they have found a good cashing in job for an unsuspecting punter.

if u lower the rear end by rotating the spline, is the rate of compression effected?

ie: is the torsion bar under different load?

I wouldn't have thought any of the loadings on the torsion bar would change, spring rate will effectively be the same.

 

Graham.