Dave

I'll second that (if that is really needed).

The engine knocks/ the oil pressure is way too low/ = you have excessive bearing wear.

There may also be another problem - not familiar with the oil pump arrangement but there could be a oil pressure relief valve problem here - maybe LarryB could comment - but even so your exsisting bearings are probably shot.

Good luck

__________________
NormanB
230 TE (W124) 1989 with 153,000 miles on the clock - hoping for at least another 100K