Thread: Spring rates for a RR

Time now to work out the spring lift on the Range Rover. I wnat to achieve a 2" lift (I assume a 2" body & 2" spring lift with cut guards is enough for 35" simex's), but will just aim for 3" bumpstop clearance on front and 5" on rear.

What spring rates are people running front & back?

I want to keep it as soft as possible as this will be an off-road driver only and not used as an every day driver.

I was thinking 150lb front & 180lb rear which is basically up 30lb on standard, what do you all think?

I will get the spring custom made at Brown's Springs as they are very cheap and make all the Rangie Spares springs anyway.

Spring Info and hights.
Based on my RR.
Holden V8, Rear step bar, swing out S/wheel, Steel BB.

Aprox 1100 lbs per corner rear:
Aprox 880lbs per corner front.

----------Spring lt:---Lbs/inch----C:T/Load:--Installed Lth:--Bstop:
Rear-------17.8:-------320:--------1100:-------14.36:---------6.36:
Rear-------16.8:-------320:--------1100:-------13.36:---------5.36:
Rear-------17.8:-------270:--------1100:-------13.73:---------5.73:
Rear-------16.8:-------270:--------1100:-------12.73:---------4.73:
Rear-------18:---------220:--------1100:-------13.00:---------5.00:
Rear-------17:---------220:--------1100:-------12.00:---------4.00:
Rear-------17.2:-------180:--------1100:-------11.09:---------3.09:
Rear-------16.5:-------180:--------1100:-------10.39:---------2.39:

Front-------17:---------220:--------880:--------13.00:---------5.00:
Front-------16:---------220:--------880:--------12.00:---------4.00:
Front-------15.5:-------220:--------880:--------11.50:---------3.50:
Front-------17.2:-------180:--------880:--------12.31:---------4.31:
Front-------16.5:-------180:--------880:--------11.61:---------3.61:
Front-------15.9:-------180:--------880:--------11.01:---------3.01:


Note: Std RR has 3 degrees of castor angle, with B/stop clearannce of 2 inches.
Every HALF inch lifted, you will loose ONE degree Castor.

Regards
Michael.