Author Topic: EJ20 Oil Pressure Gauge Install  (Read 3353 times)

August 31, 2015, 02:23 PM #0

Electro Offline

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Just wondering if anyone has installed an oil pressure gauge on an EJ20 motor and has some tips or pictures to share.
I purchased an Autometer gauge, and just am not 100% on where to mount the sender on the EJ20 or if there is certain places better or easier to access than others.

Any tips or tricks are appreciated.
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    EJ20 Oil Pressure Gauge Install
    « on: August 31, 2015, 02:23 PM »

    August 31, 2015, 04:04 PM #1

    dano Offline

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    On my ej20 there's a sandwich plate between the filter and the block. Has two spots for senders.
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      August 31, 2015, 04:41 PM #2

      Igor Offline

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      You have three options. 1. buy a sandwich plate and install it in there (potentially to leak and might not be the best location). 2. Install it in place of the factory galley under the alternator (directly over the oil pump, will give best results, will require you to use the proper thread pitch for your sender). 3. Install it in place of the spare galley under your intercooler.

      It's a fairly simple install. I'm sure nasioc or iwsti might have a DIY.
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        September 02, 2015, 05:14 PM #3

        Electro Offline

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        @dano my car does not have a sandwich plate.. hmmm

        @Igor I'm pretty sure I've located where your #2 option is, but it doesn't look like the sender will fit in the spot (not enough clearance). Seems like some people are running a line from that spot and mounting the sender elsewhere.

        I checked out NASIOC and a few of the other forums, but it seems like a lot of the pictures are no longer there which is what I'm hoping to find.
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          September 02, 2015, 06:06 PM #4

          dano Offline

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          September 02, 2015, 06:18 PM #5

          Ænimal Offline

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          Run the line, don't run a sandwich plate. the heat in that area due to how the manifold wraps around there plus the potential for leaks are JUST not work it.

          Auto-meter makes a relocation line, you can also go to green-line hose and fittings and get them to make one up for you if you're handy (if you don't know what BSP thread is etc... do not bother trying to do all this yourself)
          [Aug 01 15:48:26] dolan:Guys i really dont care, im still young enough to learn from all my mistakes.

            September 02, 2015, 10:51 PM #6

            Igor Offline

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            Originally posted by Electro
            @dano my car does not have a sandwich plate.. hmmm

            @Igor I'm pretty sure I've located where your #2 option is, but it doesn't look like the sender will fit in the spot (not enough clearance). Seems like some people are running a line from that spot and mounting the sender elsewhere.

            I checked out NASIOC and a few of the other forums, but it seems like a lot of the pictures are no longer there which is what I'm hoping to find.

            How big is the sender? I managed to fit my defi one under the alternator. Not sure if it's smaller. You could try accessing the rear galley under the intercooler. You have a bit more room in the rear.
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              September 03, 2015, 08:00 AM #7

              jordisonjr Offline

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              Originally posted by Igor
              You have a bit more room in the rear.
              :trollface:
              Originally posted by Madbuzz41
              I'm not a fan of blowing for a long time anyways ; )


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                September 03, 2015, 01:09 PM #8

                Stoyka Offline

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                I managed to get my auto meter sending unit under the alternator on my 20k. I had to modify the housing on my alternator slightly though to clear the post for the wire
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                  September 03, 2015, 09:06 PM #9

                  Electro Offline

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                  Is this the one you guys are talking about? If I pull that one, won't it throw a light on the dash?
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                    September 03, 2015, 10:01 PM #10

                    Igor Offline

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                    Originally posted by Electro
                    Is this the one you guys are talking about? If I pull that one, won't it throw a light on the dash?

                    that is the one but no it will not throw a code. I have had mine off since the spring and no light. The factory switch only lights up when you have less than 2.1 psi at which point it's already too late.
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                      September 03, 2015, 10:26 PM #11

                      Electro Offline

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                      Originally posted by Igor
                      that is the one but no it will not throw a code. I have had mine off since the spring and no light. The factory switch only lights up when you have less than 2.1 psi at which point it's already too late.
                      I'm a little confused. Isn't that where the OEM sensor is? If I pull that sensor out, wouldn't it put the oil light on the dash? Hard to see in the picture but there is a connector at the top of it with two wires. Will I have to connect those wires in with the new wires of the Autometer sending unit?
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                        September 03, 2015, 10:34 PM #12

                        Igor Offline

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                        Originally posted by Electro
                        I'm a little confused. Isn't that where the OEM sensor is? If I pull that sensor out, wouldn't it put the oil light on the dash? Hard to see in the picture but there is a connector at the top of it with two wires. Will I have to connect those wires in with the new wires of the Autometer sending unit?

                        Yes the oem sensor is there but no it will not throw a light if you pull it out. My connector is ziptied off to the side and have never seen the oil light on. No your new oil pressure gauge will have its own wiring. The oem wiring will not be needed.
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                          September 03, 2015, 10:36 PM #13

                          Electro Offline

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                          Awesome. Thanks for all the info!
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                            September 03, 2015, 11:46 PM #14

                            Igor Offline

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                            Originally posted by Electro
                            Awesome. Thanks for all the info!

                            No problem. Remember to use some high heat thread sealant on the sensor. Just don't use too much. Alternator can be a bit of a pain to put back on too so just take your time.
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                              September 04, 2015, 10:50 AM #15

                              Ænimal Offline

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                              Just remember that you need to change the oil gallery plug itself. The thread for the auto-meter sender is likely NPT and the thread for the OEM sender is BSP. There are several vendors who offer a replacement sender. Also clean the area before removing the sender so you can check for leaks after (and not push stuff into the engine oil).
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                                September 04, 2015, 11:19 AM #16

                                Electro Offline

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                                Originally posted by Ænimal
                                Just remember that you need to change the oil gallery plug itself. The thread for the auto-meter sender is likely NPT and the thread for the OEM sender is BSP. There are several vendors who offer a replacement sender. Also clean the area before removing the sender so you can check for leaks after (and not push stuff into the engine oil).
                                Oh, I did not know this!
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                                  September 04, 2015, 02:20 PM #17

                                  Electro Offline

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                                    September 04, 2015, 04:08 PM #18

                                    Stoyka Offline

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                                    When I did mine, i tapped the galley plug to the proper thread pitch for the sensor and subaru gasket sealanted the crap out of it hahaha but i advise using a proper adaptor to avoid any leaks!
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                                      September 04, 2015, 04:37 PM #19

                                      Igor Offline

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                                      an adapter might
                                      Originally posted by Ænimal
                                      Just remember that you need to change the oil gallery plug itself. The thread for the auto-meter sender is likely NPT and the thread for the OEM sender is BSP. There are several vendors who offer a replacement sender. Also clean the area before removing the sender so you can check for leaks after (and not push stuff into the engine oil).

                                      Was there a change in the sender thread pitch ever? my defi fit perfectly in the oem galley. I wonder if either the sender was bsp or if they switched the oem sender to npt.
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                                        September 04, 2015, 06:33 PM #20

                                        Electro Offline

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                                        I don't know whether the Autometer one is NPT or BSP
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                                          September 28, 2015, 01:57 PM #21

                                          Electro Offline

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                                          Ah frustration. I can't get the alternator back in with the sending unit in place. Tips?
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                                            September 28, 2015, 02:02 PM #22

                                            Igor Offline

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                                            Originally posted by Electro
                                            Ah frustration. I can't get the alternator back in with the sending unit in place. Tips?

                                            is it hitting the sending unit?
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                                              September 28, 2015, 02:16 PM #23

                                              Electro Offline

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                                              Yea and I need about another half inch to move the alternator down so that it will line up for the belt adjustment hole
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                                                September 28, 2015, 02:21 PM #24

                                                Igor Offline

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                                                Originally posted by Electro
                                                Yea and I need about another half inch to move the alternator down so that it will line up for the belt adjustment hole

                                                You will have to relocate the sending unit then. If the alternator is hitting it I don't think there is much you can do to make it fit. can you take a quick pic and post it up?
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                                                  EJ20 Oil Pressure Gauge Install
                                                  « Reply #24 on: September 28, 2015, 02:21 PM »