Ques about oil pressure

jbn7474 · 06-25-2010, 12:44 AM

I have an 85 GS and was taking notice of my oil gauge. I notice at idle , 900 rpm, the oil pressure is a little over 30. And when I am driving at 3000 rpm and over the oil pressure is a little under 110. Is that a good range for this engine?

12arotary · 06-25-2010, 09:30 AM

perfectly normal, are you going off the stock gauge?

FerociousP · 06-25-2010, 11:05 AM

at 3000rpm it should be about 60psi, unless you have an upgraded regulator or shims, etc. Make sure your gauge is accurate.

high oil pressure is better than low pressure, but I would think unchecked pressure could cause longevity issues with the oil system as a whole.

jbn7474 · 06-25-2010, 01:47 PM

Yes, I am reading the stock gauge. It seems to move when I accelerate or deccelerate. I assume thats just the change of pressure in the engine.

My5ABaby · 06-25-2010, 02:07 PM

If it's like the 2nd gen, it's supposed to move. If you're using the stocker just keep in mind that it's 25+ years old so don't expect it to be super accurate. On my FC I just use it as a tool to tell me I have oil pressure.

PercentSevenC · 07-06-2010, 06:13 PM

I've never personally come across a stock oil pressure gauge that worked correctly. Get an aftermarket mechanical gauge, that'll be way more accurate.

06-25-2010, 12:44 AM	#1
jbn7474 The Newbie Join Date: May 2010 iTrader: (0) Posts: 10 Rep Power: 0	Ques about oil pressure I have an 85 GS and was taking notice of my oil gauge. I notice at idle , 900 rpm, the oil pressure is a little over 30. And when I am driving at 3000 rpm and over the oil pressure is a little under 110. Is that a good range for this engine?

06-25-2010, 09:30 AM	#2
12arotary tumor-syphilis-itis-osis Join Date: Sep 2008 iTrader: (0) Posts: 191 Rep Power: 17	perfectly normal, are you going off the stock gauge? __________________ 82 300d 82 Gsl 84 b2200 Diesel 88 gxl

06-25-2010, 11:05 AM	#3
FerociousP I-had-a-bad-experience... Join Date: Feb 2008 Location: M'boro iTrader: (2) Posts: 1,046 Rep Power: 18	at 3000rpm it should be about 60psi, unless you have an upgraded regulator or shims, etc. Make sure your gauge is accurate. high oil pressure is better than low pressure, but I would think unchecked pressure could cause longevity issues with the oil system as a whole. __________________ '15 Juke Nismo '06 MX-5 GT SOLD '04 S Silver RX-8 GT Track Day Use SOLD '90 Black TII vert w/ Sprint RE stock port/turbo DD dyno (242.6whp@5500rpm @12psi 8psi@redline) and (250ftlbtq@4800rpm @13psi) SOLD '89 GTUs 6p TII SOLD, '87 sport SOLD, '79 SA stock SOLD '91 B2600i 4x4 w/ Rx-8 LSD SOLD

06-25-2010, 02:07 PM	#5
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	If it's like the 2nd gen, it's supposed to move. If you're using the stocker just keep in mind that it's 25+ years old so don't expect it to be super accurate. On my FC I just use it as a tool to tell me I have oil pressure. __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

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06-25-2010, 01:47 PM	#4
jbn7474 The Newbie Join Date: May 2010 iTrader: (0) Posts: 10 Rep Power: 0	Yes, I am reading the stock gauge. It seems to move when I accelerate or deccelerate. I assume thats just the change of pressure in the engine.