Late S52 temperature sensor question

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  • TheRealE30kidd
    E30 Addict
    • Jul 2010
    • 496
    #1

    Late S52 temperature sensor question

    Late S52 with one temp sensor. Want to use the E30 temp sensor. Obviously it's 2mm bigger than the existing hole. The motor is complete, so I am a little nervous about running a tap on it. Should I tap the head or rethread the temp switch. I'm leaning towards tapping the head but i'm not 100%.

    So R3v, what do you suggest I do?
    The Current Army
    -(UnderConstruction) 1991 330iS 24v S52 build thread
    -1992 325iC
    -1987 E30 Truck
    -1991 332iS (BecauseRacecar)
    -1988 Dinan M3
    -1988 325iX Tribute car
    -1989 320i Touring (S52/6spd)
    Tags: None
    • 7pilot
      E30 Addict
      • Feb 2009
      • 475
      #2
      Re-thread the sender.
      12mmx1, iirc.


      m

        Comment

        • Gooch
          E30 Mastermind
          • Dec 2006
          • 1674
          #3
          It is 12x1.5. (Napa part number 55851 if you don't have a kit and need just the one die).

          '91 318is - OBD-II S52 swapped - E30 M3 5-lug - 5x120 BBS RC090 (E39 Style 5) - TCK D/A coilovers 550/700 [SOLD]
          '87 535i - Vacuum brake conversion [SOLD]
          '93 525iT - 5-speed swap - 320k and counting
          '09 328xi - 6-speed

            Comment

            • 328ijunkie
              Forum Sponsor
              • May 2007
              • 3961
              #4
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                Comment

                • SwiftE30
                  E30 Modder
                  • Jun 2010
                  • 998
                  #5
                  tap the sender for sure. Took about 20min and fit perfectly.
                  1989 E30 Zinnoberrot Vert 325i OBD1 S52 turbo;IP

                    Comment

                    • TheRealE30kidd
                      E30 Addict
                      • Jul 2010
                      • 496
                      #6
                      Originally posted by SwiftE30
                      tap the sender for sure. Took about 20min and fit perfectly.
                      Took a file and filed off the threads then re taps it 30 mins not bad at all!
                      The Current Army
                      -(UnderConstruction) 1991 330iS 24v S52 build thread
                      -1992 325iC
                      -1987 E30 Truck
                      -1991 332iS (BecauseRacecar)
                      -1988 Dinan M3
                      -1988 325iX Tribute car
                      -1989 320i Touring (S52/6spd)

                        Comment

                        • Evil-E
                          Noobie
                          • Aug 2012
                          • 20
                          #7
                          Originally posted by TheRealE30kidd
                          Took a file and filed off the threads then re taps it 30 mins not bad at all!
                          This^

                          That way if you mess up on the threading it's only a $15 part as opposed to the head. Also if you ever decided to sell the S52 the sender hole isn't oversized for a potential buyer who isn't swapping it etc.

                            Comment

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