Jeep Grand Cherokee back axle

I've got Dana 44's both front and rear of my Mahindra. Massive units compared to the ones under my Disco !
Only negative is the cost of shafts / different ratios is very expensive even before you start adding shipping from USA and import duty / VAT.

You need to understand which Grand Cherokee you mean. The ZJ went 93-99 & have bearing issues. Also a different PCD to the later ones. The WJ/WG went 99-05 & are much better. Just had mine rebuilt with new diff bearings. These are 5 x 5" PCD the V8s have Quadradrive & LSDs front & rear. Useful info here:-
www.wjjeeps.com/service/maintenance_wj.htm

If it's the axle from the late 90s one (think ours was called an orvis?) with the 4.0l straight six boat anchor, don't bother. We destroyed one of them, pretty much all of it died, and shredded the diffs, them bought another cheaply as we wondered if they were all that cack. Killed that one in short order too, again, pretty much all of it including the diffs.
Considering how pants the engine was, and the fact it was on an awful slush box, the diffs should really have fared better.
There's no drain hole in the diff casing, so I yanked the pan off, only to find bits of gear tooth in both of both cars' diffs. You need a special additive to keep the ATB diff happy, which I'm guessing had been missed out at various points in their lives, and biggest issue of all, THERE IS NO CENTRE DIFF!!! There's a direct chain drive. What the actual ferk? If you tried to park it in a tight space, the nose would bounce up and down as the wind up found it's way out through the inside front tyre. Tyre squeal all over the shop, power steering howling like a wookie that's caught it's cock in it's flys, and wobbling about like a fat drunkard on a waterbed.
It was so bad I'll avoid driving anything that's been parked next to one, let alone using any part of one. Absolute bobbins.

There is a cadburys sticker missing from that diff cover !

Should be loads better then, ours was '95 I think? Awful vehicle. So bad we had to buy a second one to check the first wasn't a fluke.

Some info I gleaned and posted on scimitarweb a few years ago seems to indicate it's possible: the Jag unit is very similar to the Scimitar (we use the jag LSD which drops in with one small mod). The XJS had a DANA axle for a couple of years in the mid 80s. You probably know that DANA now own GKN/Salisbury as well as Comaxle in Italy.

DANA LSD Replacement
The gears for the DANA Type 44 limited slip differential will fit in the Jaguar unit (4HU). This includes gears from many larger American cars and small trucks. However, there are problems that must be overcome. First, the DANA ring gear will be threaded for smaller bolts than the Jaguar originals, so bushings will have to be fabricated to make the smaller bolts fit snugly in the holes.

Second, the replacement pinion will not mate with the Jaguar input flange, so a Chevy input yoke will have to be used. The Chevy yoke is the type with U-bolts that retain the U-joint bearing caps directly, so the flange on the rear end of the drive shaft will need to be removed. Since the Jaguar driveshaft uses standard Chevy U-joints, they will match up fine.

The salesman at Quality Jaguar reports that while the DANA gears will work, they are considered inferior to the Jaguar parts. Specifically, they tend to whine more, and of course the smaller mounting bolts are not as sturdy.

How wide is the 85-87 XJS - you might find one being broken? The early ovlovs with the 44 are about the same width as a Scimitar

sorry - you're right, the XJS DANA 44 is IRS. The 240 volvo had a dana30 series - shouldn't believe everything you read on the net eh?

black cab axle? these people could help?

The Volvo could be an option, a quick Google indicates they can be found wide, and an LSD option is available, but the ratios aren't right for me.





Black cab axles also look wide, from those pics I'm fairly certain they are Salisbury 4HA style which would suit me as I've got a spare 2.88 Powerlock ready to fit. The hub bearing ends are different from anything I've seen before, but chances are the axle would need some minor narrowing so replacement ends could be pressed and welded on to suit custom driveshafts.