yeah its turbo bottom end i had the head off there a few weeks ago and there the right piston and all that .

i did a proper test with and without oil when was properly warm and it didnt seem to go up much at all.

but since then i found the turbo seals are bolloxed so have get that done and it should be all good . but its good to know the bottom end seems to be good .

thanks for all your help people