alright, my problem: when cold my S13 redtop has a whinning sound coming from near the bottom of the oil pump. the pressure is at about 45psi. when warmed up (about 5-10 min idle) the sound is gone and the pressure is at about 25psi.
questions: what are the normal reads of oil pressure for a near stock SR20det?
How long does it take to replace a oil pan and pump?
help please?
Thanks a lot.
-Andrew