For those of us who have BEC's and would like to use a diff with a LSD what are the choices available. I read somewhere that the LR disco diesel has a low 3.? ratio and has a LSD. Can anyone confirm or deny this? So what are the choices available?

From what i have read the most common ones are the 3.62 and 3.92 from the Sierra 4x4 and the cosworths.

The landy one is used on westfields that i know of in conjunction with bike engines because of its suitable ratio and its lighter and more compact nature over the sierra version. Definately a favourite with westfield megabusa builders.

apart from that i dont know - except that if you can get a 3.14 or 3.38 sierra dif and a 3.62 or 3.92 lsd you can mix the internals together to come up with a 3.14 or 3.38 LSD



[Edited on 18/4/05 by locoboy]

All coil sprung Landies (Disco/RR Classic/90/110) have Rover built 3.54s. None with a LSD that I am aware of. The Disco and Defenders had what is called a Diff lock, but this is in the gearbox not the differential, which confuses alot of folks.

David

think the landy dif you're on about is the freelander one.. maybe.

Ned.

ps would get a quicker response under the bec section i suspect.

Almost certainly the Freelander diff as it's separate from the axle being IRS.
The Disco one is as pointed out, 3.54 and def not light. I'd go so far as to say it's 'kin heavy !

It is a Freelander diff with quiafe internals and is 13 kgs lighter than the FS diff quoted Stuart Taylor.
But the big question is what shafts do they use? Answers on a postcard.

land rovers have a center diff. on early ones like RR classics, they have a manual diff lock. on second generation RR onwards they used viscous diffs, as the diff span with wheel spin the viscous liquid stiffend, which efectively locked the diff automatically.
But enless you're bulding a high power 4x4 this form of LSD is usless, it bolts onto the rear of the gearbox and is intergral with the transfer box.

the diff in question is a freelander one. it is (i think) something around a 3.2 ratio, and LSD was apparently and option.

worth many hundreds due to all the rich boys who want one.

So the weapon of choice seems to be Freelander with the LSD if £'s are available. Or Sierra 4x4 / cosworths.

I'd imagine that there are others out there? With 4 X 4 being so popular at the moment. What about Susi / Honda / Scooby? Some of the early scoobys not the tubo nutter type must be suitable?

Any body tried fitting a flat four engine in a locost/kit car?

The engine bay would need v.serious widening to stand any chance of shoe horning one in.
You could have real slik low body/bonnet line though.

I'm pretty certain no Freelander rear diff is LSD as standard. The Freelander system uses traction control (the brakes) to control torque distribution. You can get Quaife ATB internals if you're rich.

Not to be overlooked are many possible japanese donors. Plenty of RWD Nissans, Subarus, Mazdas etc with LSDs - viscous or mechanical. If you have a friendly and knowledgable local japanese breakers...you're luckier than me.

Liam