Front wheels off, wheel arch liners off. Support car in a safe fashion etc.
You can reuse the big long bolt through the middle of the subframe mounts on either side - they all seemed to be in good condition when I did mine. When attempting to undo this, remember it has threadlock on and will be tough to get off unless heated up a bit (boiling water temp) with a hot air gun.
I'd replace the pair of M8s/subframe mount (or whatever they are) that hold the wings of the subframe mounts to the bodywork. They may be seized and may shear off. You don't want this. Squirt penetrating oil all around these two bolts (per subframe) well before you start.
Use a hex socket (as opposed to a twelve pointer) if possible to get a good grip on the heads. Don't put too much torque on them if they won't come. Instead, carefully use a gas burner to heat the area of each M8 up in turn to see if that loosens them.
If they do shear, it'll be centrepunch, cobalt drill time, drilling the broken shaft out and running a tap through to clear the threads - if you haven't damaged them drilling them out. You don't want this, like I said, so don't shear them off in the first place ;0)
I seem to recall that one of the M8s screws into a free nut, the other into a captive nut (you can see one easily, but not the inside one, it is obscured), so be aware of that.
By the way, I'm talking about the front subframe front mounts here - are you talking about the rear subframe front mounts? Slightly different, more complicated technique there (but still doable easily enough). There are different tips I can give you if you are on about the rear subframe front mounts.
The rear mounts on both the front and rear frames seem not to rust out, like the front mounts do.
Last edited by nocturneblue; 23-04-2015 at 13:50.