i have a 92 ls with a b18b engine and a t3/t4 t04e turbo. my oil pressure guage reads about 75-80psi and goes all the way to 100, just wondering how much pressure is too much for the turbo and what is a good psi range.
I have a 93gs reading the same pressure and I got an oil restrictor for mine before I even started it up. I got my restrictor from xenocron.
MantisX
thanks, yeah i ran my car yesterday and noticed it smokes when i boost.
there is a pressure relief in the oil pump that should keep your pressure from going to high…usually it opens in the 60-70 psi range (someone correct me if i am wrong).
it also depends where you are getting your oil pressure reading from and how accurate your gauge/sensor is.
i have the oil pressure sending unit hooked up in line with the turbo feed line and it’s a autometer gauge. that is how i got the car so that is how i left it untill now. i think the pressure sending unit is bad so i ordered a manual gauge for now just to check. i put the pressure regulator in that i got from xenocron and the guage still reads up around 80-100. rebuilt the seals in the turbo and it still smokes a little when i boost but im hoping it’s just burning out of the exhaust.
could the pressure relief be stuck or clogged?? is there any way of fixing it or lowering my pressure or do i need to get a new oil pump?
it could be the pressure relief is stuck certainly…I dont know how to tell you to fix it or check it though without just saying get a new oil pump
could my high oil pressure be becuase my crankcase is building too much pressure??the car runs smooth but it seems to smoke when it warms up, and i’m guessing it is because the motor is building pressure. the ball is removed from the pcv valve and is just open and the other valve cover vent goes to a catch bottle, so there isn’t any way pressure could build up unless its internal or in the black box in the back of the engine.
ok, i finally got time to install the manual oil pressure guage and had to fix a few grounds and a oil line that actually got shorted out because of it and burst. now at idle reads 10-15psi and when i’m driving it still hits 40-60psi. better than 75-100psi but is it still too high?
i also realized i never changed my oil filter during my last oil change so i’m gonna change my oil filter today, and if the teggy gods are on my side, for some reason it’ll be the problem, doubtful.
replaced the turbo with a new one, and got the valve seals in last weekend. i noticed when i hooked up the compression tester hose that i could hear air movement through the engine.
-doesn’t burn coolant
-cams were out so no valves were open
-couldn’t feel air escaping from the head
-heard the air coming from crankcase vents(when i unplugged them, plugged so no keepers fell in, the noise got louder)
that leaves me to beleive i have bad rings right? that’s about all that’s left. i hope i finally figured it out.
pulled it apart and it’s got cracks in the ringland of every piston and no 1 fell apart in my hands. anyone ever used the nippon pistons??