300bhp/ton said:

Personally I think ATB's take a lot of beating on UK terrain.....

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Thank you @300bhp/ton . That's really interesting and really useful - thank you.

300bhp/ton said:

Well a p38 will never "lock" by its very name a viscous coupling is a limited slip diff, so can not offer the same constant 50:50 power split a locked LT230 does. The power split will vary always allowing the front and rear props to rotate at different speeds.

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I think you will find it will lock.

300bhp/ton said:

L322 has better traction control than the p38 and all are 4 channel. Early models have a viscous centre diff, but latter models JLR as opposed to BMW based used a clutch plate centre diff which can fully lock, although will usually act as an LSD.

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Early models had a TB diff in the transfer box, later have an electronic controlled Plate Clutch LSD.

300bhp/ton said:

In either case, the p38 and L322 are quite different to a Discovery 1, which is what the op was asking about. So saying how an L322 would behave in the same situation probably isn't all that helpful.

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The post you are taking my comments from in this case was to reply to the comment about that’s the way it is, LR didnt change the basic system but did improve on it with later additions of TC. Also available on a D2 (I believe but lost CDL).
So I would say mildly more helpful than you trying to tell me what I have and can/can’t do .

Probably the only thing I would agree on is that the ATB is a great option v cost for most of us, but again the limitations have to be understood.


J