Quaife ATB Diff Problems

 I was wondering if anyone has had a problem with these Quaife ATB Diff`s pulling the car across the road/track when on the gas hard. Ive had these symptoms ever since fitting this but unfortunately did a major overhall on the whole car at the same time, it also had a substantial power increase, a Quaife quick rack with rose joint track rod ends, polly bushes, Spax coilovers, rose joint top mounts and Sparco strut braces and run 7x15"s  rims with 888`s. Ive tried various suspension settings but consistently have this issue no matter what I do, making me think that the diff could be the issue.  The diff is fitted in a 16v passat cable change gearbox not the old rod box. I did think Torque steer but surely the ATB diff should sort that out?? (its got 243lb tq @4200rpm 240bhp- 10psi boost) cant remember what oil I used in the gearbox but am sure it would have been the right stuff advised by quaife. its been at least 5 yrs since I built this and haven't done 2000 miles in it due to its dangerous characteristics  cf_emoticons__BangHead:

As I understand it the quaife sends power to the wheel with the most grip, so surely this would aggravate the torque steer,  especially with a quick rack which would make it harder to control without any form of power steering.

I was afraid the rack might have got a mention, I no longer have the internals. Is there an electric power steering mod?
  Going back to a standard gearbox might be an option as a test, what other diffs are on the market? its been yrs since ive had any interest in wanting to sort this and don't read the mags

I believe the quaife atb is best for the road, for the track I believe a conventional plate type lsd is probably best,  electric power steering conversions are readily available,  ie crazy quiff on here or easy steer on ebay (£420)   

ok cool, I`ll look into it, thanks. Its gunna be a project for over the winter that really needs sorting.

 Another thing I noticed on track whilst cornering hard was a lot screeching for the front wheels like one wheel wasn't keeping its rolling motion whilst on or off the gas, is that likely to be the diff creating yet another issue?

Though it will help I do not think you will eradicate torque steer completely unless you go for a locked diff .  I do not know the setup of your car but have you checked the rear wheel geometry ?

I haven`t done anything to the rear end apart from adding the spax coilovers. what would you suggest for it? Its still got the original bushes, one of the only original parts on the car. Haha, they`re 30 yrs old

  Front end is 0.5 dgrees negative camber, wheel alignment is parallel, 2 degrees of castor and 1mm of positive bumpsteer, I tried various set ups and this seemed best but still get the car pulling like crazy at times.

 I used to run wheel alignment at parallel -1.25 degrees camber with standard lower wishbone bushes and trackrod ends and never had this issue, at one pint I never had an antiroll bar and didn't fell much different with it (std roll bar now fitted).

I do not have the technical knowlegde to tell you what you should be running but if your running parrallel on the back with old bushed then they will toe out under braking and possibly in normal driving too.