Quaife ATB Diff..pulling to the right during acceleration
Discussion
today was the first time i drove a seven with a quaife ATB diff (ford sierra type).
what i was concerned about:
during acceleration on a straight road the car tended to pull to the right.
i think it has to do with the diff.
does it indicate that the diff is not ok or do i need to live with that?
what i was concerned about:
during acceleration on a straight road the car tended to pull to the right.
i think it has to do with the diff.
does it indicate that the diff is not ok or do i need to live with that?
At the risk of upsetting somebody...
Was ballast used to get 50:50 front to rear and side to side or were you just lucky that it came out that way? Corner weight setting can't alter that (without adding/moving ballast), just the diagonal split. So if whoever did it thinks it can, I'd question thier knowledge on the subject and whether thier ablility to do the alignment is any better.
Was ballast used to get 50:50 front to rear and side to side or were you just lucky that it came out that way? Corner weight setting can't alter that (without adding/moving ballast), just the diagonal split. So if whoever did it thinks it can, I'd question thier knowledge on the subject and whether thier ablility to do the alignment is any better.
I'm with AdiT... unlikely to be the diff.
First suspect would be tyre pressures, geometry or chassis aligment (and just because it was done by a 'specialist' doesn't mean that (a) they haven't f
ked up, or; (b) that it hasn't been knocked out by riding a kerb or similar since then).
Is there any reason you think it might be the diff, or is it just blind suspicion based on the fact that it is a Quaife ATB and therefore obviously voodoo?
I sense another typical Comadis thread coming on here, by which critical information is released in dribs and drabs to justify your original assertion...
First suspect would be tyre pressures, geometry or chassis aligment (and just because it was done by a 'specialist' doesn't mean that (a) they haven't f
ked up, or; (b) that it hasn't been knocked out by riding a kerb or similar since then).Is there any reason you think it might be the diff, or is it just blind suspicion based on the fact that it is a Quaife ATB and therefore obviously voodoo?
I sense another typical Comadis thread coming on here, by which critical information is released in dribs and drabs to justify your original assertion...
"Is there any reason you think it might be the diff, or is it just blind suspicion based on the fact that it is a Quaife ATB and therefore obviously voodoo?"
the reason why i asked is the following:
its the first time i drove a car with an ATB diff and its the first car which pulls to the right during acceleration.
none of my other (live axled) kitcars and the westfield IRS have done something similar, even when the wheel alignment wasnt set properly.
so thats why my first estimation was the diff.
the reason why i asked is the following:
its the first time i drove a car with an ATB diff and its the first car which pulls to the right during acceleration.
none of my other (live axled) kitcars and the westfield IRS have done something similar, even when the wheel alignment wasnt set properly.
so thats why my first estimation was the diff.
A few months ago my S2000 was pulling to the left, particularly under acceleration. It did turnout to be the alignment...
Could you eliminate the possibility of it being the diff by jacking up the rear of the car, applying the foot brake (not handbrake) and then using the accelerator - if the left wheel turns and the right doesn't then you know more power is being biased to that side.
(I don't know if this test would work but seems reasonable?)
Could you eliminate the possibility of it being the diff by jacking up the rear of the car, applying the foot brake (not handbrake) and then using the accelerator - if the left wheel turns and the right doesn't then you know more power is being biased to that side.
(I don't know if this test would work but seems reasonable?)
I would check the bushes in the rear lower wishbones (inners) any flex will cause it to pull on acceleration
If you dont like the way your quaife ATB behaves I might be interested in buying it
- Jim
If you dont like the way your quaife ATB behaves I might be interested in buying it
- Jim
Comadis said:
this morning a mate of mine phoned me. he was out with his "gearbox" specialist last nite and he asked him about my diff concern.
the reply was "if it is a torsen diff, its known from some of those diffs to act like that"...
the reply was "if it is a torsen diff, its known from some of those diffs to act like that"...
i will check everything when the car is driveable again....alternator belt snapped and damaged crank-sensor...belt snapped cause the alternator was fixed in a dodgy way, cause of clearance problems with a chassis tube, resulting in the pulleys (engine, water-pump, alternator) not beeing aligned.
interesting is that the belt was changed every few months by the (two) former owners garages!!! a big compliment to the technical knowledge of today´s garages!!!
interesting is that the belt was changed every few months by the (two) former owners garages!!! a big compliment to the technical knowledge of today´s garages!!!
I had a QATB Diff on my westy and mine would always kick one way when locked up (i.e. both wheels spinning). Can't remember which way now though, but it was quite pronounced on something like a wet road. It didn't do it when accelerating though.
ETA think it may have been to the right.
ETA think it may have been to the right.
Comadis said:
the pulling to the right only appeared under heavy acceleration, not under "normal" driving conditions...ok, what is "normal" driving in a seven-type kitcar?? 
Well at least they pull in the same direction so it could be the diff. Mine would track true though from full throttle in every gear unless the wheels were spinning. Might be worth giving Quaife a call to see whether some torque steer more than others.
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