coolant leak

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  • e30omar
    R3VLimited
    • Feb 2016
    • 2021
    #1

    coolant leak

    Hi guys, I just got my M50b25tu swap complete in my e30. Car runs amazing and almost everything is done, however it's pissing major coolant between the engine and transmission off the bell house. Also running on the stock G260 transmission. Any ideas on what could be causing this??? As soon as I pour any in with the car on or off it just pours straight out. Here are some pics.
    Attached Files
    '99 Aspen silver e39 540i/6 (first car, sold)
    '91 Schwarz e30 325i vert M50 swap(traded)
    '95 Arktis grau e34 530i 5 speed (4.0 swapped, sold)
    '01 Jet black e46 330ci 5 speed (traded)
    '98 Arctic silver e36 328i daily drifter (traded)
    '91 Nissan 240sx s13 hatch ka24de (driftbucket 4sale)
    '89 Bronzit e30 sedan (new project)
    Tags: None
    • M3PO
      E30 Addict
      • May 2012
      • 537
      #2
      Heater hose connected to the back of the head?

        Comment

        • SAS Parts
          Member
          • Apr 2016
          • 57
          #3
          Yeah, check hose on back head, and this small pipe - it's on two screw's and gasket or other sealant can be broken.

          And check hose number 6 from diagram.
          http://www.realoem.com/bmw/enUS/show...diagId=11_1123
          World quality custom part's for your race/drift/drag BMW, in low cost money.

          https://www.facebook.com/Projects.SAS

            Comment

            • e30omar
              R3VLimited
              • Feb 2016
              • 2021
              #4
              Update: Let the car sit for 2 days, added coolant to it today and no leaks until I started it up. Drove it around the street for less than a minute, left a trail of coolant from my parking spot all the way back to it lmao. I can also see the coolant leak under the intake manifold, safe to confirm that all I need is a new radiator return hose or coolant hose?
              '99 Aspen silver e39 540i/6 (first car, sold)
              '91 Schwarz e30 325i vert M50 swap(traded)
              '95 Arktis grau e34 530i 5 speed (4.0 swapped, sold)
              '01 Jet black e46 330ci 5 speed (traded)
              '98 Arctic silver e36 328i daily drifter (traded)
              '91 Nissan 240sx s13 hatch ka24de (driftbucket 4sale)
              '89 Bronzit e30 sedan (new project)

                Comment

                • e30omar
                  R3VLimited
                  • Feb 2016
                  • 2021
                  #5
                  UPDATE: pulled off the intake manifold today, found 2 hoses disconnected but dry and plugged at the end, didn't find any of the hoses to be leaking at all. Car pisses out coolant from multiple spots around the bell housing!
                  '99 Aspen silver e39 540i/6 (first car, sold)
                  '91 Schwarz e30 325i vert M50 swap(traded)
                  '95 Arktis grau e34 530i 5 speed (4.0 swapped, sold)
                  '01 Jet black e46 330ci 5 speed (traded)
                  '98 Arctic silver e36 328i daily drifter (traded)
                  '91 Nissan 240sx s13 hatch ka24de (driftbucket 4sale)
                  '89 Bronzit e30 sedan (new project)

                    Comment

                    • f4tj0n
                      E30 Addict
                      • May 2013
                      • 411
                      #6
                      On the back of the head, there will be a coolant "manifold" that has two 10mm bolts with a gasket in between itself and the head. Also towards the back is the heater inlet/outlet, but comes out of the firewall.

                      I don't think there are any other coolant connections by the bellhousing besides those.

                        Comment

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