High oil pressure. Already pulled regulator!!! [Archive] - Toyota MR2 Message Board

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Recently bought a 91 with a turbo swap. Has new pistons head was polished and ported. Fire it up it idles at 2000. No biggie but oil pressure is at 90 psi on my mechanical test gauge. Pulled the relieve vale out and its not sticking. It wasnt shimmed. Looks like the stock spring. I work in a rotary shop so this piston car is confussing the hell out of me. Any help would be great. Have to pull the trans sat to fix the rear main seal. Trying to re seal oil pan sat too but dont want to do all the