Thread: Ex Army 110 differences?

Originally Posted by 4x4 MORE

Thanks for that mate,

Don't all Defenders, EX army and civilian have rover front diffs and Salisbury rear diffs?

Series Land rovers have only rover diffs or?? I seem to remember my dad's 109 series 3 had a Salisbury rear diff..

Series Landrovers had Rover diffs, with the salisbury becoming optional in late Series 2a for 109s, and standard for 109s with Series 3 (ignoring One Ton and forward control models, some of which had ENV or salisbury front and back).

Coil sprung 110 and 130 Landrovers, including Defender and Perentie had salisbury rear until Defender 110 and 130 changed to a 'P38A' diff (improved Rover) diff about ten years ago. All front diffs and rear diffs on 90s are Rover diffs (again ignoring armoured Landrovers and a few specials). 6x6 perenties have Rover rear diffs, but their front diffs and those fitted to a few other varieties are a Rover diff with a improved centre having four planet gears instead of two.

The Rover diff as far as I can ascertain, is an in-house design first produced in about 1932, and extensively modified over the years since.

John

So the TD5 onwards has a P38A rear diff, Defenders with the Salisbury diffs are best for hard off roading yeah

What do you guys do to upgrade the weaker front rover diff? like for 35 inch tyres and Lockers..

I have a poster from a Dealer/TAFE/? that shows the rolling chassis.

It highlights the Isuzu Diesel 4BD1, galvanised chassis, LT 95A 4-speed gearbox, Hitachi alternator and Mitsubishi starter motor.







Colin

Thanks Gromit

Originally Posted by JDNSW

6x6 perenties have Rover rear diffs, but their front diffs and those fitted to a few other varieties are a Rover diff with a improved centre having four planet gears instead of two.

John

6x6 has 2 rear Salisbury diffs. The front diff, as well as the 4 Pinion/planet/spider gears, is also in a cast steel axle housing, unlike the fabricated sheet steel of other Rovers.

Originally Posted by 4x4 MORE

What do you guys do to upgrade the weaker front rover diff? like for 35 inch tyres and Lockers..

What is it you need to upgrade? The Rover Diff is stronger than the Toyota front diff (ie Hilux, 78/79/76/80/100 series Cruiser), and the County/Perentie CVs are THE UPGRADE that Defender and Disco owners go to! About the only thing you wouldn't want are 10 spline axles.

Originally Posted by 303gunner

What is it you need to upgrade? The Rover Diff is stronger than the Toyota front diff (ie Hilux, 78/79/76/80/100 series Cruiser), and the County/Perentie CVs are THE UPGRADE that Defender and Disco owners go to! About the only thing you wouldn't want are 10 spline axles.

You lost me?

So no one bothers to put the stronger Salisbury diff in the front too for hard stuff?

Originally Posted by 4x4 MORE

You lost me?

So no one bothers to put the stronger Salisbury diff in the front too for hard stuff?

It has been done - but is a lot of work, as they do not come as a bolt in replacement. With the number of custom bits you need, it gets very expensive.

There are other considerations - the salisbury diff, as well as being stronger, is bigger - reduces ground clearance, and has a longer nose, so space for the front prop shaft gets a bit tight.

You need to realise that where the Rover diff is a self contained unit in a cast steel housing that bolts into a welded pressed steel axle housing, the salisbury diff is a cast steel housing that is integral with the axle housing with rivetted steel tubing and forged (or cast?) outer ends also rivetted on. This means the two are not easily swapped. At the back it is easy since the entire axle assembly can be swapped - salisbury axles were fitted to the back of lwb Landrovers for thirty plus years (coil sprung ones for over twenty) and they are nearly unbreakable, so there are a lot about.

John