Oil Pressure Questions...

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  • Joe M
    Mustangless
    • Jul 2003
    • 18133
    #1

    Oil Pressure Questions...

    At Normal Operating temp, what would a good pressure be for a 302 based motor?
    What would consists of Normal..

    How about under load/Normal driving?

    Just curious... i have been beating the shit out of the motor in the II for the last 3 years and its holding up quite nicely... Or so i think...


    50 lbs when cold @ idle
    25 lbs when warm @ idle
    50ish lbs when normal driving (2500 ish rpm, 5th gear on the freeway).

    I Think this is good, but, i've blown my share of motors...
    Tags: None
  • Guest's Avatar
    #2
    10 psi per 1000 rpms

    Comment

    • Joe M
      Mustangless
      • Jul 2003
      • 18133
      #3
      Originally posted by 64fairlane View Post
      10 psi per 1000 rpms
      So... at 3k.... 50psi is good...

      at 1k rpm its around 25...

      Comment

      • Guest's Avatar
        #4
        yea thats good seen way worse run a long time

        Comment

        • Steve
          eMechanic
          TCS Auto-X Driver
          • Nov 2002
          • 5381
          #5
          You're fine with those numbers. Pretty healthy. My old engine used to have 10psi @ idle when hot. It never blew up but after I twisted off the pump shaft, I built the new one. My new one shows 40 psi @ idle when the oil is @ 200 degrees. I imagine it will be down to 25 or so when I get the oil up to 260-280 degrees.
          My couch pulls out but I don't.

          Comment

          • D3thM3tal
            IT Pro / Mechanic
            • May 2006
            • 3665
            #6
            I'll post a picture of my junk tonight - at operating temp the gauge reads around 70psi..
            08' Focus Coupe MTX 2.0 / 00' Contour SVT 3.0 / 95' F150 5.0 / 86' F350 6.9IDI / 74' Bronco EFI 5.8 / 74' Bronco Ranger EFI 5.8 / 66' Mercury Monterey 352FE / 64' Galaxy 500 390 FE
            I bleed blue

            Comment

            • Joe M
              Mustangless
              • Jul 2003
              • 18133
              #7
              Originally posted by D3thM3tal View Post
              I'll post a picture of my junk tonight - at operating temp the gauge reads around 70psi..
              The gauge is from the 70's!!!

              Comment

              • D3thM3tal
                IT Pro / Mechanic
                • May 2006
                • 3665
                #8
                Originally posted by Joe M View Post
                The gauge is from the 70's!!!
                Yeah - I'm a little skeptical...
                08' Focus Coupe MTX 2.0 / 00' Contour SVT 3.0 / 95' F150 5.0 / 86' F350 6.9IDI / 74' Bronco EFI 5.8 / 74' Bronco Ranger EFI 5.8 / 66' Mercury Monterey 352FE / 64' Galaxy 500 390 FE
                I bleed blue

                Comment

                • Joe M
                  Mustangless
                  • Jul 2003
                  • 18133
                  #9
                  Originally posted by D3thM3tal View Post
                  Yeah - I'm a little skeptical...
                  The motor is good tho

                  Comment

                  • D3thM3tal
                    IT Pro / Mechanic
                    • May 2006
                    • 3665
                    #10
                    Originally posted by Joe M View Post
                    The motor is good tho
                    Indeed - it sure would run a hell of alot better with a new accelerator pump! Can only get them in a rebuild kit - it just runs so damn good I kinda don't want to mess with it...
                    08' Focus Coupe MTX 2.0 / 00' Contour SVT 3.0 / 95' F150 5.0 / 86' F350 6.9IDI / 74' Bronco EFI 5.8 / 74' Bronco Ranger EFI 5.8 / 66' Mercury Monterey 352FE / 64' Galaxy 500 390 FE
                    I bleed blue

                    Comment

                    • c10
                      ........
                      • Dec 2006
                      • 1521
                      #11
                      Originally posted by Joe M View Post
                      At Normal Operating temp, what would a good pressure be for a 302 based motor?
                      What would consists of Normal..

                      How about under load/Normal driving?

                      Just curious... i have been beating the shit out of the motor in the II for the last 3 years and its holding up quite nicely... Or so i think...


                      50 lbs when cold @ idle
                      25 lbs when warm @ idle
                      50ish lbs when normal driving (2500 ish rpm, 5th gear on the freeway).

                      I Think this is good, but, i've blown my share of motors...
                      I wouldnt worry about it at all that sounds pretty good. I had a 302 with unknown miles that has about 10lbs warm at idle and like 40 lbs cold at idle. I pounded the shit out of that car and now my brother has that motor in his mustang

                      Comment

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