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The problem is offcourse when lower IT, the "base" geometry is {%@$#... And if higher speed and power, more forces then just corner "roll" Will push IT down, making the angels go all over

Yes most modern have multilink

Its comes down to a very big compromise and a very hard question to answere... But basicly, If zero deegree they basicly goes ONLY up and down, without any change in toe and camber to "follow' bodyroll in corners. When more deegree the camber and toe Will chance during bodyroll, to "follow...

Marc, you have pics? I have a genuine magnesium gravel, that have Been modded for use om both gravel and tarmac, its from one of Blomquist cars.

A adjustable 6deegree rear end Will be better, but cost and Are illegal on roadcar here om norway atleast...

A "squating" Sierra is extremly unstable Even with toe shims...

What you "whant"

Front
TOE in : 2 mm.
Camber : 2° negative
Castor : 4°

Rear
TOE in : 2 mm.
Camber : 1° negative

Yes rear Can be shims om 2 rear, but IT often taket abit of shims, so bolt need to "bend" to tighten, offcourse to much bend IT risk of breaking...

Marc. Thats one problem.. what about your toe? Since that also goes to hell om normal Sierra when lowered..

I havent looked more into IT, since the rear end is now laying in storage... i had plan ising IT on my 3door rally Cosworth, but ended up buildt IT with a 4x4 Cosworth running gear.

What i have Been told is that the angels is not same, since the scorpio is higher, so base geometry is different when dropped AS much AS it will on Sierra, since a too much lowered sierra is also f***** awfull...

Not sure, but its always Been Said that the scorpio arms on Sierra IT Will be unstable when used hard since geometry get all over when get that low AS they Will on Sierra vs scorpio. I have a scorpio Cosworth rear setup laying around, not used since was told from pepole Been in the game long time, t...

I have one piece shaft in one of my escort Cosworth with 2wd, no vibrstion there either...

How is your geometry? Scorpio have wider arms, and when lower like om Sierra, the tracking is not good.

This is a good upgrade. it was original on Group A cars with similar bearing. But not "collapse" colum om them either, since Are only a straight shaft on them

You Will loose power yes... But Can you take pics of markings? Not sure om xr4ti, but know many have setup timingbelt markings om crankwheel om Cosworth yb, thinking ignitionmark is TDC...

IT need to be "straight" line from out of gearbox to difflange.

Lift the box back up? The diff is fairly straight since the 2 piece is also "straight" original.

But if allot of vibrstion, IT might be the prop itself...

2 om a piller, and 2 rear behind rear wheel. And yes IT can clog up...