Re: Fitting 147 GTA rear anti-roll bar to a 156 ?
Yes I'm trying to add more long corner steady state balance towords oversteer (well less understeer), based on the advice of an extremely experienced racer in many categories. He tested my car at Mondello and strongly advised a stiffer adjustable rear ARB, saying it would take a lot of load off the outside front wheel.
I have 10Kg/mm springs up front, I suspect the standard GTA rate is 7Kg (or thereabouts).
My rear is stiffer than standard but not proportionately as stiff as my fronts as compared to the OEM ones.
The stiffer ARB at the rear will mean that I won't have to go too stiff on the rear springs and preserve some semblance of comfort.
If the rear ARB isn't radical enough for me am considering also stiffening my rear springs substantially since I am on progressives which are great for the road but use up too much travel on track.
I might consider maybe 7.5Kg linear springs at the rear (which is very much stiffer than OEM, I'm on 4.5Kg progressives at the mo).
This will of course mean my car will have gone over to the dark side a bit and road comfort will start being sacrificed, but should make the car very playfull on track.
Its hugely stable at the moment, too much so really.
Not sure will I do this before the Ring, perhaps will do the ARB, but no way will I do both before the Ring!
Last edited by Trailbraker; 12-04-07 at 10:13.