I am planning on removing the s/c to fix a leak with the valley hoses. Seeing as it's a big enough job, anyone any recommendations of other work to do while it is off? The car is coming up to 100k

Jack

 

Send the injectors off to have them cleaned and tested.
Spark plugs (don’t need the SC off for that but good to do at about 100k).
Thermostat (you have to take it all apart anyway).
Inspect and replace as needed intercooler hoses, SC outlet pipe seals.
Change SC oil and check bearings for play.
New SC belt.
Refresh coolant (you don’t get much choice on that one).
Good opportunity for an overdrive pulley if that’s your kind of thing.

 

Make sure the intercooler pump actually works.

 

I just watched the latest edition of "Wheeler Dealers" on TV and they serviced the supercharger on an S Type R. I believe this is the same unit? They had the rotors recoated with Teflon and a complete service kit installed. Might be informative if you can catch it on MotorTrend TV.