[barkster1971]

Once the circlip has been put back into it's groove to hold the CHRA in place the two halves of the turbo can be put back together. You can either put the hotside back on with the turbo off the car or bolt the hotside to the manifold and exhaust downpipe and then connect them.
I think putting it back together off the car is easier and you can then check the fins are turning freely on each side before tightening down the V band.
There isn't a great deal of clearance between the fins and the inside of the housings so it can be tricky getting it aligned correctly.
If you decide to put the hotside on the car first there is a great possibility than the fins will not turn as they will be catching. Take care that you do not put any strain on the fins when aligning the two halves. Take some time and check for free rotation with your finger. You'll be able to feel drag and hear it catching if it's not aligned correctly. Once it is tighten the V band up tight.
Make sure the hinge of the V band isn't in the way of the oil feed pipe or it will not go on.
The oil feed pipe enters the block hidden by a U bend of pipe work.
Obtain new copper washers and oil drain pipe rubber O ring and gasket. It's also a good time to clear the oil drain pipe of any gunked up oil deposits too.
Before you attach the oil feed pipe at the top pour some fresh oil into the cartridge so it doesn't start "dry".
Refill with coolant and check for leaks!