4XDrive Max Speed

Oh dear! What makes you think that you are not in four wheel drive already? How fast can it normally go?

Your Disco is full time four wheel drive. If you mean maximum speed with the centre diff locked, there is no maximum speed - just don't drive with it locked except on slippery surfaces - which probably includes all snow covered surfaces. JD

About 85mph for a TDi or 95mph for a V8. Then read the handbook.

It's permanent 4 wheel drive. You're always in 4WD mode.

If you're talking about the diff lock then I would suggest that unless you're actually struggling to keep the thing moving that you leave it out anyway in general as if it's so slippy that it won't go forwards without the diff lock in then you're going to have problems when it comes to cornering and stopping I would think...

Paul

On or around Fri, 25 Feb 2005 09:48:04 +0000, Paul Everett enlightened us thusly:

IME, and IMO for that matter, the only time the difflock is useful is on steep slopes when it's slippery, or on very uneven ground where one wheel could be unloaded, or where one wheel could land on very-slippery, such as ice. It's probably a bit useful on patchy very-slippery on the flat. Once you get all the wheels sunk in the mud, it makes no difference to speak of.

on steep slopes, the centre difflock stops the light-loaded upper axle from losing all the power (and indeed engine braking).

For climbing, I'd like a viscous coupling in the rear axle. But they cost big $, and those are currently unavailable, after replacing the gearbox.

On or around Thu, 24 Feb 2005 23:52:58 -0000, "Office" enlightened us thusly:

as others have said, 's always 4x4.

use difflock on icy or snowy steep hills, ascending or descending, but take it out again on the flat, especially if there's good grip. Having the diff locked on the road when it's slippery is liable to cause wind-up, which might damage either the difflock or some other part of the transmission.

Shouldn't that be 'when it's not slippery'?

On or around 25 Feb 2005 15:36:26 GMT, Simon Barr enlightened us thusly:

bugger. Yes.

Never having had the pleasure(?) of travelling in, never mind driving a Disco, were they never fitted with viscous centre diffs or whatever it is that the later RRCs have?

Richard (88 RRC with manual centre diff lock)