Hi there need some help with an oil pressure problem on my car

I've got a series 2 RS Turbo 1.6l. I have changed the oil pump, main bearings, big end bearlings, crank, hydrolic lifters cam shaft and the piston rings. It's still knocking really bad on top and bottom on tick over and when you increase rpm.......
Anyone got any ideas what it could be?

thanks

 

Did you manage to get this sorted mate? Im having this problem ive changed everything on the bottom end twice now. It runs for a good 20 mins then the light starts to flicker but goes out when you increase the revs slightly it then idles up and down. I really dont know what to do next.

 

Ball bearing and spring seal missing from the end of the cam shaft?
Did you have the crank meassured for wear?

 

Would that be on the timing belt end? The crankshaft has been reground to accept .25 bearings as part of my rebuild. Id love to be able to get it sorted without removing engine as it would be the 4th time removing it for this.

 

.Bump.

 

I think there may be one at both ends I cant remember sorry!

 

Did you measure main bearing clearances?
I have seen wrong bearing inserts used before.
Measuring clearances is a must!
If crankshaft was ground 0.50 and your bearings are 0.25 - you would have very low oil pressure and knocking sounds.