what can it do?

[pmac]

It wouldn't be Quadradrive 2 on a WJ (WG). QD2 came out in 2005 in the WH's (WK's).

Quadradrive is hydraulically operated, where if one wheel spins at a different speed to the other, an actuator pump (gerotor) locks the diff and puts power to the spinning wheel. QD2 does the same, but with use of electronics.

Many say their ride stiffened up with aftermarket spings and shocks. As with all 4wd's, not just Jeeps, soft springs allow more flex and articulation offroad. Hard springs make the ride firmer and less wollowy (excuse spelling), but can limit articulation if too firm.

In my WJ, i found the rear a-arm bushes were shot that caused a lot of side to side movement from the rear.

[briteway]

Originally Posted by pmac

Quadradrive is hydraulically operated, where if one wheel spins at a different speed to the other, an actuator pump (gerotor) locks the diff and puts power to the spinning wheel. QD2 does the same, but with use of electronics.

To add to this, the Eaton eGerodisc ELSD's in QD2 can achieve the full 100% lock. The QD, from what I've read, can't achieve 100% lock and engaged slower due to the hydraulic operation. It's probably something Eaton worked on to improve since buying the rights and patents off McLaren Performance Technologies back in 2002, the original manufacturer of Vari-Lok.

There's a video on YouTube showing how the eGerodisc works in QD2's:

You Tube

This is another good video: http://www.jeep.com/en/4x4/how_syste...uadra_drive_2/

Here's a video on QD:

You Tube

I hope this is useful to airlock, please confirm what you have QD or QT2?

[airlock]

Originally Posted by pmac

It wouldn't be Quadradrive 2 on a WJ (WG). QD2 came out in 2005 in the WH's (WK's).

Quadradrive is hydraulically operated, where if one wheel spins at a different speed to the other, an actuator pump (gerotor) locks the diff and puts power to the spinning wheel. QD2 does the same, but with use of electronics.

Many say their ride stiffened up with aftermarket spings and shocks. As with all 4wd's, not just Jeeps, soft springs allow more flex and articulation offroad. Hard springs make the ride firmer and less wollowy (excuse spelling), but can limit articulation if too firm.

In my WJ, i found the rear a-arm bushes were shot that caused a lot of side to side movement from the rear.

my bad, its quadratrack 2

[pmac]

Ahh - sadly you don't have the benefits of the (semi) lockers that QD provides. No worries unless you want to do serious offroading.

[airlock]

Originally Posted by pmac

Ahh - sadly you don't have the benefits of the (semi) lockers that QD provides. No worries unless you want to do serious offroading.

does the quadra track have any party tricks?

[timbotrog]

The party trick is you can fit a front ARB air locker and a rear auto locker.

Don't worry, unless you want to do some serious off road work you don't need quadradrive.

[Hanna]

Originally Posted by airlock

does the quadra track have any party tricks?

The only real "party trick" with QT2 is that when the transfer case is in Full-time 4WD (high range) the centre diff transfers power to the front axle once the rear axle spins faster (i.e. wheelspin). This is operated by a gerotor pump, similar to how the QD diffs work.

It just means that you can drive in high range with all power going to the rear wheels and then have the benefit of the front wheels kicking in once wheelspin occurs at the rear. The only downside to this is driving in the sand as by the time the front kicks in the rear may have already dug in and you're going nowhere. This is not often though and you just need to know when to change to Low range to lock the centre diff. This only really needs to be done in the softest sand, but you can get away with at least 60km/h in Low range anyway, so if you're unsure, just use Low to get through the tough stuff.

I have a 4.7 V8 Limited with QT2 and I'm also a complete novice when it comes to sand driving and I got away with driving all over Fraser Island for a week without a drama. I did have one blonde moment when I left it in Full-time 4WD in a soft section at Orchid Beach servo and got bogged within 10m of the bowser, but after clearing the rear wheels of sand and popping it into Low range with the engine off, I just drove straight out. When I first got there I started off driving everywhere in Low range accept for the main beaches and then I realised that was overkill and pretty much drove everywhere in Full-time 4WD from then on.

You really will be surprised how well they go off-road even in standard trim and they love the sand too!!