My steering rack is leaking and I am planning to replace it with a rebuilt unit. Based on my research it appears that there are different variants of the steering rack? Some say that supercharged XJR has a different ratio from normally aspirated? Also, the site where I was trying to order it lists EVO (speed sensitive variable assist) and non-EVO versions. How can I tell which one I got?

Any pointers to rebuild kits and/or instructions would be greatly appreciated as well.

 

On the left side of the left side foot well for a LHD american version there is a steering control module if you have variable steering

It's under the small cover

Although I have not done it the outer seals can be replaced without removing the steering rack

But the 90 degree ball joint rod end must be removed

https://www.jaguarclassicparts.com/u...ack-and-pinion

By changing the fluid many times as a drain / refresh method the seals soften and seal better

http://jenniskens.livedsl.nl/Technic...F%20BMW%20.pdf