Question for anyone with a quaife atb?

D

Ducklakeview

Elite
 Merseyside
Have noticed recently if I go from reversing to drive, a faint noise as I initially pull away. I THINK it's just the rollers moving from one end of their pockets to the other fire to the change in direction. Anyone else get this?

Mike
 
ping Perry Gunn, he has one fitted. Mind you, he'd have to drive it to help you out.... :roll:
 
I know it's a different diff but machine monkey has a m factory diff, you could speak with mat an see if he has similar thoughts
 
markplant said:
I know it's a different diff but machine monkey has a m factory diff, you could speak with mat an see if he has similar thoughts
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I do Mark but it’s of a different design and work differently. I get no noise but your probably right Mike it’s just the lockers moving up there locking ramp angles!

Mat
 
markplant said:
I know it's a different diff but machine monkey has a m factory diff, you could speak with mat an see if he has similar thoughts
Click to expand...

///M is a clutch type LSD, completely different internals.

Mike
 
Machine monkey said:
markplant said:
I know it's a different diff but machine monkey has a m factory diff, you could speak with mat an see if he has similar thoughts
Click to expand...

I do Mark but it’s of a different design and work differently. I get no noise but your probably right Mike it’s just the lockers moving up there locking ramp angles!

Mat
Click to expand...

X posted..

That's what I'm thinking, it had less than 200 miles on it when it went in, and now has about 3k on it. Not worried about it, as that's the only time it does it, just wondered if it was "normal" for them..

Mike
 
Ducklakeview said:
markplant said:
I know it's a different diff but machine monkey has a m factory diff, you could speak with mat an see if he has similar thoughts
Click to expand...

///M is a clutch type LSD, completely different internals.

Mike
Click to expand...
He was referring to an M factory diff not a BMW M (factory!) diff, though I can see why you'd read it like that :) They're helical I think so pretty similar to the torsen quaife I'd have thought? Doesn't the quaife deal with the issue with those type of diffs where one wheel will loose all drive if completely unloaded, or something like that?
 
TomK said:
Ducklakeview said:
markplant said:
I know it's a different diff but machine monkey has a m factory diff, you could speak with mat an see if he has similar thoughts
Click to expand...

///M is a clutch type LSD, completely different internals.

Mike
Click to expand...
He was referring to an M factory diff not a BMW M (factory!) diff, though I can see why you'd read it like that :) They're helical I think so pretty similar to the torsen quaife I'd have thought? Doesn't the quaife deal with the issue with those type of diffs where one wheel will loose all drive if completely unloaded, or something like that?
Click to expand...

Yes, I believe the quaife overcomes that issue, came say I've yet put that particular bit to the test, yet..

Mike
 
Ducklakeview said:
TomK said:
Ducklakeview said:
///M is a clutch type LSD, completely different internals.

Mike
Click to expand...
He was referring to an M factory diff not a BMW M (factory!) diff, though I can see why you'd read it like that :) They're helical I think so pretty similar to the torsen quaife I'd have thought? Doesn't the quaife deal with the issue with those type of diffs where one wheel will loose all drive if completely unloaded, or something like that?
Click to expand...

Yes, I believe the quaife overcomes that issue, came say I've yet put that particular bit to the test, yet..

Mike
Click to expand...

Lol, no I can't imagine it's an easy to create scenario, excepting the obvious one of an icy puddle on one side of the road... :?
 
TomK said:
Ducklakeview said:
TomK said:
He was referring to an M factory diff not a BMW M (factory!) diff, though I can see why you'd read it like that :) They're helical I think so pretty similar to the torsen quaife I'd have thought? Doesn't the quaife deal with the issue with those type of diffs where one wheel will loose all drive if completely unloaded, or something like that?
Click to expand...

Yes, I believe the quaife overcomes that issue, came say I've yet put that particular bit to the test, yet..

Mike
Click to expand...

Lol, no I can't imagine it's an easy to create scenario, excepting the obvious one of an icy puddle on one side of the road... :?
Click to expand...

Yup or British summer as it's called...

Mike
 
I have one and there has never been any noise in any circumstance. Nobody would know it was an LSD from listening alone.
 
Ditto my experience - no noise from the diff itself.

However if you're getting a small noise when moving off it could be the input shaft splines moving slightly in the diff housing? Did you take the whole diff housing off the car to swap to the lsd? People I've heard grease the splines but it's a temporary fix at best - it doesn't make any impact on the drive or on longevity so I'd just leave it if it is this tbh!
 
^there should be no movement between input shaft splines and propshaft flange.

And there should be no difference in noise between before and after install.
 
Just spoke to Birds, they say it's normal - Just the helical wheels sliding back in their pockets after the complete change of direction.

Mike
 
GuidoK said:
^there should be no movement between input shaft splines and propshaft flange.

And there should be no difference in noise between before and after install.
Click to expand...

Plenty of z4s do it - it's like one of the bigger complaints about the cars aren't they?!
 
I've assembled/dissembled 3 used diffs and none had movement on those shaft splines. (mind you, I put some extreme torque/power on those too compared to stock!)
Also TIS doesnt require to grease that up.
If movement gets onto those splines, then there is some extreme user error involved.
Sounds like some strange figment that the splines on the diff input shaft are the same as a first motion shaft on a gearbox....

Maybe its also a local figment as on the mainland this is certainly not a parctice that people do. I only see this written on the uk or us forums, but not on say the german forum, and there are some pretty hardcore engineers on there.
 
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