Vehicle & Technical > Discovery
Disco or Range Rover?
bogie:
Leave the discos to rot and breath life in to a rrCLASSic!!!!!!!!!!!!!!!!!
ben-dent:
--- Quote from: trecfive on October 26, 2009, 18:56:07 ---Slightly different transfer box RR has a viscous coupling(automatic difflock)Disco has a manual selection difflock
--- End quote ---
i think you will find they both came with both viscous and manual diff locks
Bluebottle:
--- Quote from: ben-dent on November 14, 2009, 21:21:36 ---
--- Quote from: trecfive on October 26, 2009, 18:56:07 ---Slightly different transfer box RR has a viscous coupling(automatic difflock)Disco has a manual selection difflock
--- End quote ---
i think you will find they both came with both viscous and manual diff locks
--- End quote ---
Viscous for the autos and manual for the manuals on a Rangie. Disco 1 should be the same.
Nick4X4:
--- Quote from: Bluebottle on November 14, 2009, 22:57:34 ---
--- Quote from: ben-dent on November 14, 2009, 21:21:36 ---
--- Quote from: trecfive on October 26, 2009, 18:56:07 ---Slightly different transfer box RR has a viscous coupling(automatic difflock)Disco has a manual selection difflock
--- End quote ---
i think you will find they both came with both viscous and manual diff locks
--- End quote ---
Viscous for the autos and manual for the manuals on a Rangie. Disco 1 should be the same.
--- End quote ---
thats not 100% true Pat as you know jim has a manual rrc and thats viscous and i know yours is the same box but a manual difflock.... so both was fitted
Range Rover Blues:
In 1989 with the introduction of the "americanised" RRC (concealed hinges, new interior and Lucas hot-wire EFi) the transfer box was upgraded form the LT230 to the Borg-Warner with Visocus centre diff, irrespective of gearbox or engine type. This gearbox has no mechanical diff-lock and the viscous fluid only locks up when one axle starts to spin out.
The Disco1 in either 200 or 300 guise should have the LT230 with manual diff-lock.
The B-W box is roughly 1.202:1, the LT230 is IIRC 1.22:1, except for the 2.0MPI, 16 valve engine which has the 1.4:1 transfer box like a Defender.
All boxes have the same low ratio, don't ask me what it is though.
The earlier Chrysler torque-flilght 3 speed auto found in 3.5 RRC had a 1:1 LT230 transfer box.
All manual gearboxs should be LT77 up to the introduction of the 300 series/soft-dash when the R380 was introduced, along with 24 spline axles and the later handbrake mechanism, plus the rubber doughnut on the rear prop. As always there are a few cars either side of the changeover that don't match that spec.
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