Quaife now installed... with LSD-flavour pix

[paulgs1000]

Interesting Perry - and looking at the price fitted, not too unreasonable.

What impact would it have on the Stability and Traction control? Would it need to be off to feel the benefits?

 

[PerryGunn]

I don't think you will switch back

This is one mod i have wanted to do for the start, they are excellent bits of kit and will make the car drive great, don't forget to give us some feedback when you get it fitted

The last thing I want to do is lose the Alpina-ness of the car but, as I said, I've done the research and I think it'll complement it. Older Alpinas (up to the E36) came with LSDs but it appears that BMW then wanted to keep them as a differentiator for the ///M cars so Alpina didn't offer them. It's only with the latest generations that Alpina have been able to start offering them again - LSDs fit the Alpina ethos and so I'm willing to take the chance.

It's a fair chunk of change to lose but if I feel it doesn't fit with the nature of the car, I'll remove it.

 

[PerryGunn]

Lots of comments there

- should be done in a day, estimate is 6-7 hours to fit.

- versions for the ///M, I noticed this and that the gearing is different but you'd have to ask Birds about why (I'll ask when I'm there if I remember)

- traction control / dtc / dsc etc. One of the benefits of the Quaife is that it's supposed to work in complete harmony with the electronic nanny systems, just making them less intrusive. I think this means that it'll work to increase traction if they're on, half-on or disabled but I'll be able to confirm this once fitted

 

[Stu Boy]

When is the big day, is it before the Welsh meet next month?

 

[PerryGunn]

When is the big day, is it before the Welsh meet next month?

Yep, it's booked in for next week

 

[LeeZ4MR]

Cracking upgrade and in my experience its pretty much the best thing you can have on a car, had four RWD cars with a LSD and all the ones I have had that don't have one just make me want one again even more.

 

[GuidoK]

Quaife LSD......
The first upgrade I did (first of many), and probably the best.

 

[Mark-Z4]

This really interests me, looking forward to the review 8)

 

[GuidoK]

If you really wanna know: ......you just don't notice it's there... :lol:

And that's a good thing! 8)

There is no real feel of a specific lock up point, no feel of locking in corners, no unpredictable skipping/lockup, anything.
That's because the Torsen design is the only design that regulates torque before there's any break of traction: other LSD types must have loss of grip before they can lock up (like the M diff), or lock up at any time as soon as power is applied (normal clutch pack). That's why the torsen/Quaife design is unique. It delvers torque on the demand of the wheel.

You just have traction on both wheels, always.
No spinning of 1 wheel, far less intervention of the dsc/traction control etc.
If you break traction, it's on both wheels, other than that it's not noticeable. And more than that you can't possibly ask from an LSD.

That's why both the renault megane cup trophy and the new civic type R (both nordschleife record holders)(and the previous ford focus RS) have this type of LSD between the front wheels. A clutch type LSD would make the car far less maneuvereable. The only thing that comes close is a computer controlled active diff (torque vectoring technoloty). But that's virtually not possible to install as an aftermarket option.

 

[Bing]

When is the big day, is it before the Welsh meet next month?

Yep, it's booked in for next week

We need to find a big empty car park on the way :evil:

 

[PerryGunn]

When is the big day, is it before the Welsh meet next month?

Yep, it's booked in for next week

We need to find a big empty car park on the way :evil:

Perhaps you'll be able to make one a waypoint on the Cotswolds mini-hoon...

If you ever get around to planning it

 

[Bing]

Seriously, we have more than a month - what's the rush ? I did the Skye route in a week or two :wink:

 

[Yorkie Z]

I've fitted an M-factory lsd to mine and absolutely love it. It was one of the first things I done to the car when I brought it. If it wasn't for the LSD I think I would of got rid of the car by now.

Took the car on a track day yesterday and had the time of my life. Pulled off some really cracking drifts on a few corners. The car handled perfectly and so predictable.

They had a play area that you could mess around in. Killed my tyres :evil: :evil:

 

[srhutch]

They looked to have had plenty of tread left before you started playing

 

[GuidoK]

Right side of the tire shown is the inside of the wheel?

 

[Yorkie Z]

Yeah it's the inside of the tyre. I was doing huge doughnuts for about 5 minutes. They were only a cheap s**t set of wheels and tyres off ebay

 

[PerryGunn]

Don't think I'll be trying too much of that - the PS2's still have a bit too much tread on them to consider turning them into playground chippings :wink:

 

[BMWZ4MC]

If you really wanna know: ......you just don't notice it's there... :lol:

And that's a good thing! 8)

There is no real feel of a specific lock up point, no feel of locking in corners, no unpredictable skipping/lockup, anything.
That's because the Torsen design is the only design that regulates torque before there's any break of traction: other LSD types must have loss of grip before they can lock up (like the M diff), or lock up at any time as soon as power is applied (normal clutch pack). That's why the torsen/Quaife design is unique. It delvers torque on the demand of the wheel.

You just have traction on both wheels, always.
No spinning of 1 wheel, far less intervention of the dsc/traction control etc.
If you break traction, it's on both wheels, other than that it's not noticeable. And more than that you can't possibly ask from an LSD.

That's why both the renault megane cup trophy and the new civic type R (both nordschleife record holders)(and the previous ford focus RS) have this type of LSD between the front wheels. A clutch type LSD would make the car far less maneuvereable. The only thing that comes close is a computer controlled active diff (torque vectoring technoloty). But that's virtually not possible to install as an aftermarket option.

My S2000 has a torsen diff and it's far less twitchy than my ///M. I had attributed the smoother transition from grip to slip to grip again to the S2000 having 100bhp less power and much less torque. However, From what you describe, it's the fact that the torsen diff breaks traction on both rears wheels simultaneously.

 

[PerryGunn]

Well, today's the big day... leaving for Bird's shortly...

 

[srhutch]

Make sure you report straight back