Need help with my brakes!!!!!!

[rubjonny]

yeah pedal pumping on a MK2 isn't a good plan as it can bugger the master cylinder if you press the pedal too far unfortunatly

Give it a go with the bias valve clamped open with the pressure bleeder, and flip the caliper upside down if need be.  I think this is only an issue when fitting some types of MK3 caliper on a MK2 or something, I'm not sure tbh.  Just something I've read that some calipers have the bleed nipple at the bottom

[NewStu]

surely it shouldent make any difference where the nipple is as the pressure will push the fluid out anyway.

[rubjonny]

Its not the fluid pressure thats the problem, its the air trapped at the top of the caliper thats the issue if the bleed nipple is at the bottom of the caliper

[AudiA8Quattro]

Try jacking up the rear and supporting on axle stands, do this as high as you can get them.
Pump the pedal until you get resistance, but do not press the pedal right to the floor.
Leave the car overnight, any air will settle in the back brakes.
In the morning bleed the brakes using a proper pressure bleed kit with a pressure feed off the spare tyre.
If you are still having problems then try swapping the bleed nipple from the old caliper onto the new one, i have had problems with poorly tappered bleed nipples in the past.
As for clamping brake hoses, of course you can, hasn't anyone read a workshop manual 

[AudiA8Quattro]

Just to add.
The way this problem would be looked at in a garage would be they would clamp the hose going into each corner, if any cause the pedal to go tight, then your problem is isolated.