I finally got my 4runner up and running with its frankenstein motor. I now have a 83' 22r block and bottom end, a head from a 83 celica 22re, and the stock FI from my 85 4runner. The parts are all well used but being that I am on a poor college kid budget it was all i culd afford. Any how I got it all pieced together and it actually runs pretty dam good...smokes a little....but i don't follow myself so it is ok. (it is not that bad and it mainly does it when i step on it). Anyhow the problem i have is it loses all oil pressure when it gets warm. When it is cold it has about 25 lbs at idle and 50-60 lbs under throttle. when warm i got a max of about 10lbs. My thought was the pump is bad but i figured i would get some other opinions. What do you all think????