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Author Subject: Rear ride hight
pinkfloyd

Senior User

Location: Ellesmere port

Registered: 03 Oct 2006

Posts: 929

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Post #1
For a while now I've been thinking my Rally sat too low at the back, I got my friendly local garage to raise it 1 spline. I don't have any measurements but it went from being borderline too low to looking like std ride height. I checked his marks on the tb's and trailing arms and had only been moved 1 spline!
He then put back 1 spline and it went back to "too low" about 50mm between settings.
Anyone had this before?.

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Posted 26th Apr 2012 at 22:11
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

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Post #2
sack off the spline method and do it the proper way, remove the torsion bar fully, set the arm to the desired free height then re-insert torsion bars, you will need to turn the bars spline by spline till you find the matching pair for any given height, one spline will slide in about 5mm before the other, if you've done a decent job of cleaning the splines they'll slide in by hand when you find the ones that match up.

measuring between the damper bolts is the usual way, you can get/make a dummy adjustable damper to do this, 330mm is the standard setting for the 20mm bars on sport spec 306's.

322mm will give roughly a 25mm drop Smile

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Posted 26th Apr 2012 at 22:16
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scotzman

Seasoned Pro

Location: Dundee

Registered: 24 Jun 2011

Posts: 1,408

Status: Offline
Post #3
The splines either end of the T.B's are offset, so you can virtually set it to the exact mm you want by rotating them until you get the setting you want.



Edit....beaten to it, but thats basically a better version of what i was trying to say.

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Posted 26th Apr 2012 at 22:16
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hovis16

Seasoned Pro

Location: Reading/parts for sale

Registered: 21 Nov 2008

Posts: 4,304

Status: Offline
Post #4
welshpug! wrote:
sack off the spline method and do it the proper way, remove the torsion bar fully, set the arm to the desired free height then re-insert torsion bars, you will need to turn the bars spline by spline till you find the matching pair for any given height, one spline will slide in about 5mm before the other, if you've done a decent job of cleaning the splines they'll slide in by hand when you find the ones that match up.

measuring between the damper bolts is the usual way, you can get/make a dummy adjustable damper to do this, 330mm is the standard setting for the 20mm bars on sport spec 306's.

322mm will give roughly a 25mm drop Smile


dam rite lol

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Posted 26th Apr 2012 at 22:20
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