Ok, I have to decide if I go ahead and convert to outboard disks or not. I have everything necessary except the handbrake levers.

Fors as I see it
- Vented rotors with better cooling.
- Removes any issue with overheating Diff output seals.

Against
- Increased un-sprung weight approx 10kg, albeit with a lower frequency of oscillation.
- Need to source handbrake levers or fabricate something.
- Single piston slide calipers vs twin piston.

I guess what I am looking for is a discussion and input especially if you have experience with both IB and OB on the XJS.

 

what did you get the parts off of? just curious.

Im all for it. ease of maintance.

 

I bought a complete XJ40 rear end. The driveshafts and hubs fit the older cage rear with minor mods.

Outer fulcrum shaft in XJ40 is small diameter so XJS LCA's need to be bushed, and the handbrake is different, other than that they will bolt up no problem.