Thread: Disco 2 Castor Correction?

Originally Posted by ADMIRAL

What were the front end castor readings after the last alignment ? When you lifted the rear end, the front castor would have reduced further. ( the front diff rotates forward as you lift the rear, reducing the castor )

I am unsure of the readings, I will find out next time I am in there.
I realise that lifting the back on it's own would rotate the front axle slightly, reducing the castor angle.
Although, because of rear drawers, fridge etc. it did appear to be 'sagging' at the rear.

Do you know the correct castor angle?

Not off the top of my head, but I will try to remember to check tomorrow. ( just left myself a note )

I'd have thought all 'round is wrong.

Originally Posted by p38arover

I'd have thought all 'round is wrong.

X2

From memory the label on the side of the drivers door shows 190kPa Front and 260kPa Rear.

Originally Posted by Shaker

Tyre pressure is 38psi all round.

The real problem definitely coincided with the fitting of the spacers, was a slight problem prior but only after the 2" lift.

I will double check the suggested items, although I would hope the front end aligners would have done that.

38psi in the rear is fine, but, depending on what size tyre you have on (now this is what I do) I'm not speaking for anyone else

I start with the factory setting (on the tyre placard) and then adjust the pressures if needed from there, for example with 245/75s I ran 30psi front and 40psi rear (46psi loaded with camper on)

With 265/75s I ran 36psi front and 40psi rear (46psi loaded with camper on)

Now I have 235/85s I have reverted back to 30psi front and 40psi rear (46psi loaded with camper on) after trying the same pressures as I had with the 265/75s, I'm going away this weekend and starting the trip with these pressures, I'll adjust them if needed.

I change the the pressure till I find the right pressures that make the car handle the best.

It's amazing how tyre pressures can makes such a difference in the way the car handles.

Baz.

After my 4" lift my Caster was -1deg

After the 3deg bushes back to +2deg

Originally Posted by Tombie2

After my 4" lift my Caster was -1deg

After the 3deg bushes back to +2deg

Those SUPERPRO i have heard alot about them do you rate them as i have heard 2 different storys

thanks
Kelvin

Originally Posted by Shaker

I am unsure of the readings, I will find out next time I am in there.
I realise that lifting the back on it's own would rotate the front axle slightly, reducing the castor angle.
Although, because of rear drawers, fridge etc. it did appear to be 'sagging' at the rear.

Do you know the correct castor angle?

Hi Shaker,

They vary per model, but in general the early V8s had 3 and 3/4 degrees. The later V8's and T/diesels 3 degrees.
The castor correction bushes are used to try and restore the castor back to where it was before the lift. This is not always possible, and you may have to accept some loss of castor as a trade off from lifting the vehicle.

The most obvious physical effect of reducing the castor, is lighter, floaty steering, ( you may even call it darty ) particularly at higher speeds over uneven surfaces, or in crosswinds. There will also be a reduction in the steering self centering, so the s/wheel won't come back to centre as readily.