Alex6969

What is the ideal oil pressure (from the stock OP gauge)? After my 86 has warmed up and at idle its right above 0 and at WOT its right at 60. Is this good, normal, bad?

1987RX7guy

iTrader: (3)

Its probably a bad gauge/sensor or both.


Idle should be around 30psi when you get to or above 3k it should be at 60psi or higher. The OPR should open at 77psi if i'm not mistaken by a few pounds.

Alex6969

I'm in need of a new oil filter. would this give me more preasure?

90WhiteVrt

Stock Oil pressure gauge sucks, get an aftermarket for accurate readings.

Alex6969

I've been thinking about it. I'm wanting to fill up a 3 pod

FirstRotaryExp

iTrader: (3)

Oil pressure, oil temp, and water temp. Theres ya three key guages to use if you want to fill teh pod. Btw, my 88 SE sees 30 psi at idle and 60+ at WOT, so if youre seeing 0 at idle somethign is very wrong.

Alex6969

its not EXACTLY 0 its more like 5ish. I've noticed that its alot higher when the motor is cold. whats the best oil I should put in it? its getting cold here in KC (30-50 degrees F)

FirstRotaryExp

iTrader: (3)

ok...not to stir any **** here....but askign what kind of oil is best is not exactly a sane idea around this forum. Just dont put synthetic in it and you will be fine. But the low oil pressure is not good period. What series motor are you running, S4 or S5? Either you dont have enough oil in it or you need a new sensor/gauge.

RotaryEvolution

iTrader: (30)

double check it with a mechanical gauge and if it is in fact low i would suspect a front cover o-ring failure(typical problem).

boost_its_what_for_dinner

hell my gauge is about -30 psi till warm then its at zero and maybe sees about 15-20 when wot

RETed

As I stated in the other thread...

Stop trying to guess the stock oil pressure gauge!
The senders are notorious for dying.
All it's going to tell you if your oil pressure is: GOOD / OK / OH **** I NEED A NEW MOTOR

Get an aftermarket oil pressure gauge.
Even the cheapie ones with the capillary tubing is under $50.


-Ted

drnated

Before you do anything take your car to a shop and have a mechanical pressure test done. it is very inexpensive and will tell you if you need a sender, pump, or engine. It is very unlikely the gauge is malfunctioning. To answer your question at a warm idle you should have between 20 and 30 psi. WOT sould be between 60 and 70 psi. using a 40 weight oil.

Alex6969

I have an s4 n/a. at wide open throttle its at 60, just idle is low. I will deffinately get a mech. pressure test done. I'm running 5w30 right now, but I have a feeling that will change here in a bit...

liv

you live in kansas city kansas?

Alex6969

no KC missouri

Mint87RX7

and for the question about what is ideal pressure, the higher the better. 2 weeks ago i rode in an fc that was running like 125 psi at 3k.

Alex6969

i would think that higher pressure would blow something

Mint87RX7

just lube better

RETed

I find oil pressure above 100psi tend to cause engines to smoke through the exhaust due to blow-by.
Others will argue otherwise.
There's no reason to run anything higher than the Racing Beat 80psi - 85psi "street" upgrade OPR on a daily driver.


-Ted

Alex6969

my gauge has never been that high. what can cause it to be low? OMP going out? bad seals? bad lines? I haven't noticed it leaking at all. there is a big spot on my street where i park because i overfilled it once , but its hard to tell.

Mint87RX7

ya its not going to make much of a difference, 100 psi will lube just as well as 125. but its not going to hurt anything, i dont know of any rx7s that dont smoke a little lol. this was on a track car though

khai7

My gauge is done too, but it scares me sometimes because I bought the car like that with it not working. But I have driven it for a couple thousand miles now so I should be okay right. Just need to get new gauge.

Alex6969

yea i'm in the same boat, i've put 3000 on mine and it hasn't blown yet. i'm looking for a 3 pod and some gauges

RotaryEvolution

iTrader: (30)

misconceptions again, more is not always better. more pressure can cause more friction, heat, blowby, oil leaks and especially in turbos blown turbo seals.


100 is max i suggest for n/a engines and 65-70 for turbo engines at redline.

Alex6969

its getting pretty damn cold here and i read the FQA and it says to run 10w30 when its 0 to 30 degrees outside, i plan on changing my oil and filter today anything i should look out for?