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Bad Oil Pressure I Think?

t51rb26

By t51rb26,
in General Maintenance

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t51rb26 Contributor

t51rb26

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hey guys im a noob just got a rb26 swap done in a s14.here is my problem today wen i was driving back home from work i noticed my oil warning light was coming on and off and flicking while driving normal. so got home and installed a oil press gauge to see what oil press i had because the one on my cluster dosent work do to not wiring it i have the r33 cluster. so i installed the gauge and went for a drive so while driving and looking a the gauge full throttle goes from 40psi to 80-90psi then all the way back to like 40-20psi while at full throttle.at idle is at 20-30psi im gething all kinds of psi readings pls help. thanks for ur help you guys

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Beer Baron Grand Master

Beer Baron

Posted
Posted

sounds ok to me. a little bit low but nothing to worry about.

basically it should be around 30psi at idle. above 3000rpm (regardless of throttle position) it should be 60psi+.

Cubes Grand Master

Cubes

Posted
Posted

Whats with this though?

full throttle goes from 40psi to 80-90psi then all the way back to like 40-20psi while at full throttle

Oil pressure vary's considerably while giving it a full rev. 40-20psi can't be too good at the upper rpm's. :S

t51rb26 Contributor

t51rb26

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  • Author
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sounds ok to me. a little bit low but nothing to worry about.

basically it should be around 30psi at idle. above 3000rpm (regardless of throttle position) it should be 60psi+.

kool but wen i do full throttle from 5krpm to 8krpm it goes from 40-psi to 80+psi then befor it gets to 8krpm it goes back down to like 20psi crazy shit. keep in mind that this happens while at full throttle.

t51rb26 Contributor

t51rb26

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As Cubes says, get another guage and see if the guage is the problem. If so it's a cheap fix, just get a new guage.

ok got a new guage and still dose the samething while driving normal it gives me normal psi numbers but wen i do fullthrolle psi goses up and down up down why?

t51rb26 Contributor

t51rb26

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yeah check your oil level asap.

oil level is right on the line wen i do oil change i put 4/5 quarts i have the rb25 oil pan is this good or not im making 454whp on gt2530's.im thinking that i might be runing out of oil at high rpm.maybe it dosent come down fast enough for the pump to create pressure again. :( ?

Godzilla32 Veteran

Godzilla32

Posted
Posted

Im not as familiar with the 25 as i am with the 26. On the 26 it has a sender mounted under where your oil filter is. They very commonly read inaccurately on the 26's, so im hoping for your sake its the same deal on your engine.

You need to get a master guage which will screw into where your oil pressure switch normally goes. Thats the safest way to check your oil pressure and know exactly what its reading. If you dont have one, take it to a garage and ask them to check it for you.

Good luck mate ;)

Deren

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