hi i know this topic has probably been over done by now however i can seam to find the correct information on the fault im experiencing
so im getting low oil pressure 8psi on idle 60psi at 4k i have replaced the oil pump oil filter oil and oil pressure control valve
engine hasn't got any unusual noises as yet however i have replaced the balancing shafts as they did seize the balancing shafts have been modded to carry roller bearing so there shouldn't be anymore problems with them lol if someone could point me in the right direction as im at a loss with this car thank you in advance

 

also oil pressure is only low when engine is warm on start up oil pressure is 30psi cheers