simon.allcorn@tup-uk.co.uk wrote: > > I think my 87 coupe Quattro has a Torsen centre diff. Has anybody got > any idea how I can tell ? If your rear diff has a vacuum servo for locking, and you only have a one-position diff-lock switch, I'd guess the center was a tors*n. hth, James '87 4kq '89 200q