Sorry, just returned from a work trip.
Have you looked at your rear shocks as the problem?
What valving have they been setup with?
If the bump is too soft it will compress easily and the car will lean.
I do think the rear shocks are part of the problem. The bump (and rebound) is not soft enough, giving a bad ride but not ultimately limiting roll, as Peter says:
Originally Posted by Peter Dyrelund
Your rear shocks are definately set up too stiff (or not working anymore).
Also remember that shocks and roll have nothing to do with each other. You can not change the roll by changing the shocks (only the transient roll - the way it changes when changing direction - the final roll in a corner will be the same, whatever the shocks are doing).
I suspected this was the case, hence why my instinct was to go back to softer shocks for the rear but add roll stiffness in another more effective way.
...I still think you need to find out the spring rate of your springs before you go any further. If you know the brand and part number...
Vogtland 'red violet' range, part number 959100, for 'Alfa Romeo 33 1.3 - 1.5 ohne 4WD'. I've done a search and can't find spring rate info on Vogtland's sites, so I've sent them an email. I'm not expecting success though. =(
Originally Posted by patanga
Sway bars are are for fine tuning once the rest of the suspension has been sorted, not to overcome inadequate geometry set up issues.
Aww, you mean there's no easy answer? Revert to softer rear shocks, still end up with the same final roll, can't fix it with sway bars? 33 rear end will be too light to ride well with springs heavy enough to control body roll?
Greek, I had already seen your photos and saved them. Your swaybar looks best, but when I discussed that with a suspension shop they said it would be expensive (to make up a template bar then send it somewhere to be manufactured from spring steel etc). Fitting an existing bar from a wreckers yard would be easier - I've heard of AROC guys doing this.