The Toyota Landcruiser Owners Club

[Nuclear Chicken]

[Google]

[Crispin]

ah, so it's a varient thing then.

So if we could find a LC3 breaking, we could use the rear diff (probably be the whole axle?) as it's all electrical then.


Wonder when Gary is putting his rear locker in? Gary?  
_________________
Cheers,
Crispin
Have Snorkel, Will Swim

[garystockton]

[Landcrusher]

Reverse ABS - err Traction control?

Dunno about the ATRAC Gary. I just wondered if it was connected to the ASC device that we had issues with on my road (remember?) so if it detected slide, it might try and brake one wheel that was locked to the other wheel which would not make life difficult but might show up as a fault. Would you look to disable all clever functions when off road? It would be advantageous to the have ATRAC on the front wheels, it would be like my front diff lock. But you don't want to be fighting brakes on the rear wheels do you.

We've still to work out whether the rear diff casing has the right profile to be able to accept the front diff housing with the locker in it. My bet is that it will be, but that is a fundamental part of the project - yes? In all, I think that an ARB air locker would be easier. But you got the diff and it just might work. There is a 4x4 control ECU that fires the motor etc but I think Jon is suggesting that some of this can be bypassed quite easliy.

C
_________________
HDJ 80 but still a 90 owner at heart (yeah right!)

[Nuclear Chicken]

Some, if not all, of the ATRAC is disabled when CDL is engaged. No other way of manually disabling that I am aware of.
_________________
'04 KDJ120R LC5. Died 17th Dec 2010. RIP.

[garystockton]

Hmmm...

Good reading here:

Understanding & Using ATRAC II+

I'm hoping that the ECU is smart enough to work like this:

1. Open diff - ATRAC works as designed, i.e. brakes kick in to stop the spinning whel and trfr power to wheel with traction
2. Locked rear diff - ATRAC works as deisgned, but ignores the rear as no slip / spin is detected, and only worries about the front.

With a bit of luck, and hard work, Father Christmas will combine with the birthday fairy next year to deliver an ARB l;ocker for the front, making ATRAC superfluous to an extent.

However, I'll eave everything in place, becuase the VSC and ATRAC stuff combines really well, especially in the current slippy conditions where you don't want to lock any diffs on the open road, but need controlled traction ...

Guess I need some input from the doctor on this, because he's added in the air-lockers and kept the 100's ATRAC, AFAIK.  If it isn't going to work, I'll have a spare diff for sale!

From what I've seen with the Mk 1 eyeball measuring device and ToyoDIY piccies, it seems the housing will fit OK.  

Cheers
_________________
I'll be more enthusiastic about encouraging thinking outside the box when there's evidence of any thinking going on inside it.
- Terry Pratchett

[wildsmith]

I don't have anything hooked up to disable ATRAC when the ARB's are locked on my 100 and it doesn't seem to be a problem but with all 4 wheels locked to the same speed you wouldn't really expect the ATRAC to feel the need to kick in would you. ATRAC seems great for crossing areas that have intermitant traction where braking one or 2 wheels while the others push it along works because those remaining wheels have enough traction but not so good for places where all 4 wheels are struggling to find grip at the same time which is what lockers are then good for.

ARB's are generally stronger than OEM but there are some down sides to the ARB's like oil seals that need a diff removal and strip down to replace when they wear out and no positive indication of engagement available to the driver and cost several times more than Gary got his e-locker for!

You won't know for sure what's going to need doing to make that e-locker fit until your current one is out Gary but worst case should be cutting a slot down the side of the casing to clearance the locking mechanism and putting 2 new stud holes in for the long studs on that side. You could by a gasket for yours and offer it up to the e-locker diff to see how it looks and that would give some idea before pulling everything apart. For the wiring I'd just get the diff end of the harness from someone like Stef (I'm assuming same plug as an 80, could be wrong) and make up the rest yourself as the 'ECU' is just one or two relays powered via the position sensor in the actuator.
_________________
Jon m0zxj

01 UZJ100 lifted (AHC & 40mm BL), ARB locked f&r, cryo'd 4.88's, TJM front bumper, 12k goldfish, sliders, rack, snorkel, 35's, storage, aux power etc.
93 HDJ80 sold
94 HDJ80 RIP

[garystockton]

Moving this to a new thread ...
_________________
I'll be more enthusiastic about encouraging thinking outside the box when there's evidence of any thinking going on inside it.
- Terry Pratchett