Thread: 4WD on 2WD Dyno

Removing the other propshaft would be safer!

Potential for diff failure? Is it a salisbury rear or a Rover centre? The reason why Range Rovers were constant 4WD in the first place was because the diffs weren't strong enough for 2WD use with the Rover V8 powering them.

I don't have any rover centres. Have always used a 4WD dyno but the waiting time and cost is a pain.

Originally Posted by cockie55

Any mechanical reason why you can't use a 2WD Dyno by locking the centre diff (LT230) and lifting the front wheels off the deck ?????

We've never had any issues in the 20+ years of having it done with either the LT230 or LT95

Originally Posted by cockie55

I don't have any rover centres. Have always used a 4WD dyno but the waiting time and cost is a pain.

Unless you have changed out the axle housings to something else you will have rover diffs (or a modifed version there of).

In would lock the center diff and take out the front drive shaft. As you will have equal traction to both rear wheels and no sudden application of braking force etc on the dyno there should be no issues doing it in 2wd.

Garry

Originally Posted by BigJon

Potential for diff failure? Is it a salisbury rear or a Rover centre? The reason why Range Rovers were constant 4WD in the first place was because the diffs weren't strong enough for 2WD use with the Rover V8 powering them.

The rear diff sees more torque climbing offroad locked than it would in 2wd onroad.

When I did my 4.6 conversion, I rang around for local 4wd dyno places which can be hard to find.
My response was "Its a 4wd, go to a 4wd dyno place thats why they are there"
I did that and was very happy, although Yes I had to wait 4 weeks to get a time slot.

A bloke I used to work with had diesel gas fitted to his Tdi 130 and they put it on a 2wd dyno with the centre diff unlocked, not hard to picture what happened to the centre diff. They didn't want to know about it either and he had to fix it himself.