Wizard
Can't remember exactly when, but back in possibly the late 1960's LandRover offered a limited slip diff as an optional extra for series vehicles (Rover type Diff) This option was dropped after a short period due to durabilty issues.
Anyway, I know they actually existed because I rebuilt a couple about 20 years ago. A correspondent in the UK who competes in RTV trials asked me if I had any documented evidence about the existence of these as it would allow him under RTV regs to build and fit them to his comp vehicle.
Unfortunately I don't have any details in print.
Does anyone out there have an old optional equipment parts list with a part number or even a mention of the LSD option?
Wagoo.
Super Moderator
Apparently it is included in a "Rover Service Bulletin" in about 1966. Bobslandies, believes he has a copy but is still in the process of unpacking after a move of house last month.
He will post up the info when he tracks down the box.
In the meantime your friend may have access to the Bulletins himself, barring that they will be in the archive at the BMIHT Gaydon Museum.
You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
Swaggie
Didn't the RRC originally come with an LSD centre diff when released in 1967? Maybe the optional LSD rear diff was released at the same time?
Super Moderator
Yes and no.Originally Posted by isuzurover
The RRc was released in 1970 for the 1971 production year model. Yes it did have an LSD in the centre diff of the LT95 for the first couple of hundred cars but this was discontinued and the friction plates were replaced with spacer disks (or whatever they are called).
This is not the same animal that was fitted as an optional extra to SIIa Land Rover front and rear 4.7:1 "Rover" style diffs.
You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
Wizard
Not exactly the same animal, but it did share the same DNA. I used the 4 pinion gears , 2 cross shafts and friction plates from a couple of early RR centre diffs to rebuild the pair of 4.7 Landy diffs, because aside from the different splines in the side gears all components were identical.
If I had 2 RR LSD centre diffs back then, surely there must have been a few hundred RRs built with them before they were discontinued?
Wagoo.
Super Moderator
The info collecting is almost complete the diff type is a power-lok and was also used on some models of Jaguar as well as many US diffs. It was discontinued in Land Rover before 1967.
Bob will post up, including Rover Service Bulletin numbers and part numbers when it's finished.
You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
Swaggie
BasilProgress has been made on The Mystery Diff. It's been identified as an optional Rover LSD - identical to a Dana Power-Lok.
Wizard
Basil? I do apologise, I've been calling you Ben all these years.
Wagoo.
Super Moderator
If anyone is interested, the crownwheel on that power-lok is a Plus 35.
You can identify it by the groove.
You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
Wizard
Many LandRover revised/improved components were also identified by them having a circumferential groove machined on them.Does that practice continue still?
Wagoo.
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