what are the mechanical differences of a 99 DII

[Apexdisco]

I already own a 99 DI and do most of the mechanical stuff myself.

Been looking at a sharp looking Silver 99 DII. What's the major differences between the two?

 

[rover4x4]

what are the mechanical differences between the DIsco I and the Disco II

a rehash of the motor for the DII (THOR) I think it was called?
Diff lock not there, I think more electronicary and something about the axles. I dont know tho I have niether

 

[Apexdisco]

that's right, I forgot about the no diff lock thing.

 

[marc olivares]

everything is different between the two.
but that doesn't mean that you won't be able to maintain it yourself.

and the axles are semi-floating not fullfloating like the D1/D90/RRC

 

[Jamooche]

99 D2s do have a diff lock....they just lack the shifter to be able to lock and unlock it.

 

[Apexdisco]

everything is different between the two.
but that doesn't mean that you won't be able to maintain it yourself.

and the axles are semi-floating not fullfloating like the D1/D90/RRC

I'm not clear on the semi-floating/fullfloating. What's that mean exactly?

 

[rover4x4]

full floating you unscrew some bolts and pull the axle shaft out ( in a nut shell) its simple. I am not sure about the semi floated, I think it has something to do with the hub being attached to the axle, I am really not sure tho.

 

[Thai]

I thought that Disco SII has full-floating axles. Is this not true?? Or is it only for Disco SI??

Thanks.

 

[Disco Mike]

D2's don't have full floating axles. They are the first year of the Bosh fuel management system, they are longer, the A/C has been updated, they do have ACE, the do have CDL you just have to hook it up.
Mike J.

 

[rover4x4]

not all of em got the CDL

 

[Disco Mike]

Yes, All 99 D2's had the CDL t/case which continued into 2000 as the old transfer cases were used up.
Mike J.

 

[p m]

They have larger wheelwells, so you can put taller/fatter tires with the same amount of lift than on a D1. The rear suspension seems to allow more wheel travel without D1's pinion angle issues.
The rear overhang is very generous - so the departure angle suffers.
Personally, I like having full-floater rear (all front axles are full-floating) - but it doesn't mean the D2 axles are weaker.
And, actually, if you don't mind shelling out money for tires, 18" wheels are not a bad thing. You can put a lot of tire without having too flexy sidewalls - but this stuff is expensive.

 

[Meisterbr?wn]

they do have ACE

They don't all have ACE - it's an option (I think Mike meant that, but it doesn't read that way).

 

[Bielecki]

Actual there a quite a few differences that make the DII ALOT less home mechanic (okay, any mechanic) friendly. Take for example simply destroying the threads on one your studs that hold a wheel on. On any other car, you can just bang out the stud and for a few bucks insert a new one. Not so with the DII! You have to replace the whole hub for $400-$500. But it's not that easy, it's a sucky semi-floating design, the axle shaft is machine pressed into the hub. That means you have to take the axle shaft + hub to a machine shop to get pulled and then attach a new one. Try doing that out in the field! There are the "sealed for an early" death" ujoints. When ABS sensors go out, only a Rovacom or Testbook from a LR indie or dealer can reset them and turn your ABS back on. And replacing the ignition wires required taking off the intake manifold.

The Watts linkage also sucks compared to the DI/D90/RRC's 3-link rear. You get ALOT less wheel travel from the rear. More specifically, with some mods you may get most of the travel out of 10" shock, more typically OME are 8"ish I think. However you can go all the way to 14" on a D1 if you so desire.

That being said, I've still enjoyed my DII (less the ample rear overhang).