Bill_Sinclair

Hi everyone, I have had various landrovers and range rovers for 20 years and I joined this forum to get this question answered. Can you please settle a debate on my p38 range rover (or any range rover with a viscous coupling instead of a manual diff lock). I assert that under full traction and normal driving conditions, there is little or no torque transfer through the vcu to the front axle. The alternate plates in the vcu have little or no relative angular velocity, shear torque is minimised and essentially the drive is from the back wheels and the front wheels are 'pushed'. I fully understand the action of the vcu when a wheels slips and my assertion remains that a p38 is essentially a rear wheel drive vehicle until slip conditions engage the front axle. My local garage maintains that it is permanent four wheel drive and the front and rear axles are both driven by the transfer box at all times with the vcu limiting slip between axles under low traction conditions.