normal oil psi? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > normal oil psi?

Ruffstuff Axle Simple Swap Kit!ROCK BOTTOM prices on LIFT KITS at Rockridge4wd!! WANT TO Introducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Reply
Unread 03-24-2009, 10:37 AM   #1
wetdog
Registered User
1986 CJ7 
 
Join Date: Mar 2009
Location: pacific ocean
Posts: 20
normal oil psi?

What does a 258 s oil press settle down to after warm up ? I start out at 75 to 80 then it goes to about 25 is this okay ? is it a jeep thing ? Mark

wetdog is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 10:51 AM   #2
DT5150
Registered User
1983 CJ7 
 
Join Date: Jun 2007
Location: Lakes Region, NH
Posts: 1,494
hey mark, welcome to the forum.

i used to have an image from the jeep service manual of normal oil pressure during start up and warmed up, but i can't seem to find. it. i don't recall the numbers off the top of my head, but yours sound just fine. the oil will get thinner as it heats up, thus the psi drop. are you getting these readings off the stock gauge? if you want true numbers, you can run a mechanical gauge in conjunction with your stock gauge.
__________________
SOLD! 83 CJ-7. TBI Small Block Chevy 350/TH350/D300, Scout II Dana 44 front, CJ Dana 44 rear. 4" BDS Lift with 35's. Currently Jeepless.
DT5150 is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 11:17 AM   #3
scottymac62
Registered User
1977 CJ5 
 
Join Date: May 2008
Location: Locust Grove, GA
Posts: 1,465
http://www.junkyardgenius.com/jeep/1...0cylinder.html
scottymac62 is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 03:02 PM   #4
wetdog
Registered User
1986 CJ7 
 
Join Date: Mar 2009
Location: pacific ocean
Posts: 20
Thanks , I have an auto meter mechanical guage the stock guage used to just kinda move around .
wetdog is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 03:59 PM   #5
Bubba Ray
Registered User
1984 CJ7 
 
Join Date: Dec 2005
Location: SC
Posts: 1,680
Your oil pressure sounds good to me. Mine max's at 25 psi.
Bubba Ray is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 04:03 PM   #6
Mike Romain
Registered User
1986 CJ7 
 
Join Date: Nov 2007
Location: Off the Grid in Chester Grant, Nova Scotia, Canada
Posts: 13,961
Mine runs at 45-50 psi hot on the highway and 20 at idle. I have a mechanical gauge also.
__________________
Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos: http://mikeromainjeeptrips.shutterfly.com (10 new albums added Sept 16/10)
Mike Romain is online now   Reply With Quote Quick reply to this message
Unread 03-24-2009, 04:17 PM   #7
Eaallred
Registered User
1962 CJ5 
 
Join Date: Jan 2009
Location: West Valley City, UT
Posts: 245
Everything i've read from various automakers spec non-hydraulic lifter engines at 10 psi per 1000rpm fully warmed up with the recommended motor oil listed in the manual. My F-head idles fully warmed up at just a hair over 20 with 10w30.

I've never paid much attention to hydraulic lifter engine recommendations though. Your oil psi sounds in line with my other hydraulic lifter vehicles though from what I see on thier gauges (94 Silverado, 03 GMC van, 03 Honda Accord).
Eaallred is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 04:27 PM   #8
fastang
Registered User
1982 CJ7 
 
Join Date: Feb 2009
Location: griswold,Ct
Posts: 20
As long as it comes up when you rev the engine or accelerate you should be fine.....
fastang is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 06:39 PM   #9
wetdog
Registered User
1986 CJ7 
 
Join Date: Mar 2009
Location: pacific ocean
Posts: 20
The pressure comes up instantly to at least 45 lbs/ psi This site rocks by the way thanks again.
wetdog is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 06:43 PM   #10
wetdog
Registered User
1986 CJ7 
 
Join Date: Mar 2009
Location: pacific ocean
Posts: 20
scottymac thanks for the info its printed and saved .
wetdog is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 07:44 PM   #11
scottymac62
Registered User
1977 CJ5 
 
Join Date: May 2008
Location: Locust Grove, GA
Posts: 1,465
You're welcome but you need to thank JH....it's his web site.
scottymac62 is offline   Reply With Quote Quick reply to this message
Unread 03-24-2009, 10:35 PM   #12
wetdog
Registered User
1986 CJ7 
 
Join Date: Mar 2009
Location: pacific ocean
Posts: 20
okay thanks jh it great info.
wetdog is offline   Reply With Quote Quick reply to this message
Unread 03-25-2009, 04:24 AM   #13
powermacj7
Registered User
1986 CJ7 
 
Join Date: Dec 2008
Location: NY
Posts: 146
I was questioning my oil pressure as well. My gauge jumps around a bit. 20 at idle, and mostly 40 at high speeds.
powermacj7 is offline   Reply With Quote Quick reply to this message
Unread 03-25-2009, 02:24 PM   #14
wetdog
Registered User
1986 CJ7 
 
Join Date: Mar 2009
Location: pacific ocean
Posts: 20
Iam glad I switched to mechanical guages the stockers are pretty bad at letting you know anything quickly.
wetdog is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.