M20 oil pressure sensor adapter

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  • zaq123
    E30 Fanatic
    • Jul 2016
    • 1364

    #1

    M20 oil pressure sensor adapter

    Any good ideas to mount the oil pressure sensor and at the same time maintain stock cluster light operational as designed? Is there a way to go of the sensor alone for that (reading the actual pressure on the aux display and operating the dummy light at the same time)? Or I would need both, the sensor and the switch? Anyone knows how Alpina had the oil sensor integrated?
    I found the adapter from Bimmerheads (pictured). Any feedback? My concern with that setup: that oil will never be able to drain from that adapter, possibly gunking up both units over time.

    My Aux pressure display uses the sensor that is the same size as stock oil switch.

    Click image for larger version

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  • ForcedFirebird
    R3V OG
    • Feb 2007
    • 8300

    #2
    We will have a new product soon, for this exact situation. Nice clean OEM setup. Just have to finish a couple more piston modifications and they will be in the lathe.
    john@m20guru.com
    Links:
    Transaction feedback: Here, here and here. Thanks :D

    Comment

    • zaq123
      E30 Fanatic
      • Jul 2016
      • 1364

      #3
      Originally posted by ForcedFirebird
      We will have a new product soon, for this exact situation. Nice clean OEM setup. Just have to finish a couple more piston modifications and they will be in the lathe.
      cool, any details on the installation location etc? 1/8npt?

      Comment

      • Das Delfin
        R3VLimited
        • Sep 2014
        • 2293

        #4
        VDO makes a pressure sensor that will send both a variable signal to a gauge and an idiot light that will turn on at or below 8.5 psi, close to the stock 7 psi. I was searching their inventory on summit last week and cross checked the part numbers with VDO spec sheets and viola. No need for three sensors if your idea is to implement oil pressure and temp gauges along with keeping the original oil indicator light.

        https://www.vdo-gauges.com/sensors/p...x1-5-30-6.html


        it's a Kenny Powers quote on wheels

        Comment

        • zaq123
          E30 Fanatic
          • Jul 2016
          • 1364

          #5
          Originally posted by Das Delfin
          VDO makes a pressure sensor that will send both a variable signal to a gauge and an idiot light that will turn on at or below 8.5 psi, close to the stock 7 psi. I was searching their inventory on summit last week and cross checked the part numbers with VDO spec sheets and viola. No need for three sensors if your idea is to implement oil pressure and temp gauges along with keeping the original oil indicator light.

          https://www.vdo-gauges.com/sensors/p...x1-5-30-6.html
          unfortunately it's out of spec for my unit, it needs 5V powered sensor. What do you guys think about a sandwich plate mounted sensor (between the cooler adapter and the filter)?


          My sensor Click image for larger version

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          • ForcedFirebird
            R3V OG
            • Feb 2007
            • 8300

            #6
            Wow, the forum kept saying the post failed.

            Originally posted by zaq123

            cool, any details on the installation location etc? 1/8npt?
            Just above the oil pressure switch. I picked up a whole bunch of the big banjo bolt that goes through the oil filter adapter (11421711071). The plan is to center drill and tap them to 1/8" NPT. Not only convenient for a gauge, this will also give turbo guys a place to easily get a supply line. This way you don't need any 14mm adapters, extensions etc and can even keep the idiot light.

            john@m20guru.com
            Links:
            Transaction feedback: Here, here and here. Thanks :D

            Comment

            • whodwho
              E30 Mastermind
              • Jun 2008
              • 1547

              #7
              Works well there

              My M20 Frankenbuild(s)
              4 Sale - Fully Built TurnKey Megasquirt Plug and Play EMS

              Comment

              • digger
                R3V Elite
                • Nov 2005
                • 5905

                #8
                Originally posted by Das Delfin
                VDO makes a pressure sensor that will send both a variable signal to a gauge and an idiot light that will turn on at or below 8.5 psi, close to the stock 7 psi. I was searching their inventory on summit last week and cross checked the part numbers with VDO spec sheets and viola. No need for three sensors if your idea is to implement oil pressure and temp gauges along with keeping the original oil indicator light.

                https://www.vdo-gauges.com/sensors/p...x1-5-30-6.html
                this is what i did, its the simplest way IMO
                89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

                Comment

                • eLKuRLy
                  Grease Monkey
                  • Oct 2007
                  • 360

                  #9
                  Originally posted by digger

                  this is what i did, its the simplest way IMO
                  sandwich plate or on stock location?

                  Comment

                  • digger
                    R3V Elite
                    • Nov 2005
                    • 5905

                    #10
                    Originally posted by eLKuRLy

                    sandwich plate or on stock location?
                    stock location, it needs an adapter that screws into the stock location as the VDO is too fat and the one i had was different thread iirc. i think i used one i got from BMP design when they still existed.
                    89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                    new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

                    Comment

                    • ForcedFirebird
                      R3V OG
                      • Feb 2007
                      • 8300

                      #11
                      Great ideas! Turbo peeps still need pressure feed, and race cars prefer mechanical gauges. Still relevant. ;)

                      So, the VDO still needs and extension/adapter? Never tried one, always used the dummy light locale and Autometer makes a nice 14mm pipe to 1/8" NPT for short money. Forget the part number, and may fix this post in the morning,e they are hanging on the office wall, but 2267 comes to mind.
                      john@m20guru.com
                      Links:
                      Transaction feedback: Here, here and here. Thanks :D

                      Comment

                      • zaq123
                        E30 Fanatic
                        • Jul 2016
                        • 1364

                        #12
                        decided to go with the sandwich plate between the filter and the oil cooler adapter. 14mm for the temp. sensor and 1/8npt for the oil pressure sensor. Another two spare ports. $18 isn't a bad price. Just have to tap for 14mm temp. sensor since this thing has all 4 ports as 1/8npt. Any concerns with this setup?

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                        Last edited by zaq123; 04-16-2020, 01:17 AM.

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                        • m3clutch
                          Grease Monkey
                          • Nov 2008
                          • 351

                          #13

                          Originally posted by ForcedFirebird
                          We will have a new product soon, for this exact situation. Nice clean OEM setup. Just have to finish a couple more piston modifications and they will be in the lathe.

                          Any updates here on your efforts? Some good info around here, looking to add some oil info off my motor.
                          Last edited by m3clutch; 03-04-2021, 05:53 PM.
                          Flickr

                          Comment

                          • ForcedFirebird
                            R3V OG
                            • Feb 2007
                            • 8300

                            #14
                            Originally posted by m3clutch



                            Any updates here on your efforts? Some good info around here, looking to add some oil info off my motor.
                            Yes! Sorry I didn't update here, been selling them on fleabay.

                            Click image for larger version

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                            $45 shipped with new washers/o-rings for forum members since no listing fees, just paypal to: Forced_Firebird at yahoo.com with a note "hollow bolt". :)
                            john@m20guru.com
                            Links:
                            Transaction feedback: Here, here and here. Thanks :D

                            Comment

                            • m3clutch
                              Grease Monkey
                              • Nov 2008
                              • 351

                              #15
                              Originally posted by ForcedFirebird

                              Yes! Sorry I didn't update here, been selling them on fleabay.

                              Click image for larger version

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                              $45 shipped with new washers/o-rings for forum members since no listing fees, just paypal to: Forced_Firebird at yahoo.com with a note "hollow bolt". :)


                              sweet, might need to cop, thanks for the reply! I got hasty and ordered a sandwich plate, but realized, I only really need to run oil temp at the filter housing.... unless, I don't suppose the chunky oil pressure sender would mount to the sandwich plate AND fit between the headers and block and still give an accurate reading (too close to header?)
                              Flickr

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