Thread: D4 - Is E-Diff with standard 19" tyres worthwhile?

For that use, probably not. I took our new D4 out on its first training trip last weekend (which doesn't have the eDiff), after doing the course the week before in our Sport (which does have the eDiff). Identical 19" tyres. The D4 was every bit as polished on even quite challenging tracks.

If you tow heavy loads off-road, the stronger axles in the eDiff might be of some benefit.

Cheers,

Gordon

Originally Posted by gghaggis

For that use, probably not. I took our new D4 out on its first training trip last weekend (which doesn't have the eDiff), after doing the course the week before in our Sport (which does have the eDiff). Identical 19" tyres. The D4 was every bit as polished on even quite challenging tracks.

If you tow heavy loads off-road, the stronger axles in the eDiff might be of some benefit.

Cheers,

Gordon

Where is the reference for "the stronger axles in the eDiff " ?

Parts manual - they're beefier.

traction

Standard tires are great on road. In mud or nice slippery stuff I doubt a e-diff will help much at all on standard road tires. Discos have good off road capability but if tackling "very" off road situation ( not just a nice dirt or gravel road) the weakest part is what always stops you. That said I would like a diff lock and would have it but after the spare rims and M.T. rubber

It was originally advertised in the US as the "heavy duty" pack - uprated rear drive + rear eDiff. The axle part numbers which includes the CV are different. The CV joints are definitely more solid units, as attested to by Spooky on Disco3 some years back, who is the only person I know who successfully retro-fitted a rear eDiff to his D3. Whether the halfshafts are really stronger (they look it) is perhaps debatable, but as I said, the part numbers are different. Manageable torque for the whole assembly is quoted as 2500 Nm!

Cheers,

Gordon

I do know someone that managed to break them!

LR have stated in promos that the e-diff half-shaft CVs are stronger, not that promo info is always correct or complete.

Retro-fitting an e-diff to a D4 requires tapping into the harness but is simple plug-in for later L322s, albeit costing around 4000 GBP / $8K in parts for the L322 even though the open/e-diff use the same half-shafts.

At least we get to find out a lot more about L322's with you interested in buying one, Graeme! I have looked out for your posts on the L322 forum since I also started frequenting it when I was interested in buying one last year.


I ended up deciding I would keep the D4 since you can get a lot more third party gear for the D4 and it is a bit more practical. With the prices of good second hand L322's, though, it is very tempting to "upgrade" to one, especially the post 2010 models with proper TR etc that you are interested in.