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    Quick Question

    Is this okay? My temp sits right around here at all times even on the highway, but when I'm sitting still it will creep up to right before half.

    1991 325i Calypso Coupe

    Like Grandfather, Like Father, Like Son
    BMW


    #2
    Yes. That's where all M20 E30's sit at when they're running correctly.

    Edit: Also, the temp gauge isn't necessarily accurate. About half the time mine is waving at me.

    Originally posted by SpasticDwarf;n6449866
    Honestly I built it just to have a place to sit and listen to Hotline Bling on repeat.

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      #3
      I'm going to say your fan clutch is probably bad, or your thermostat is stuck open. Does it ever creep past the middle at all while you're sitting in traffic? Is your heat lukewarm?

      `92 325 vert - `90 325 coupe `99 m3 - Instagram @e30L

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        #4
        Originally posted by e30lov View Post
        I'm going to say your fan clutch is probably bad, or your thermostat is stuck open. Does it ever creep past the middle at all while you're sitting in traffic?
        It hasn't done that yet but it has gotten to the point where the needle covers the halfway mark. I thought the t-stat just pops open early but I guess not.
        1991 325i Calypso Coupe

        Like Grandfather, Like Father, Like Son
        BMW

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          #5
          you most likely have a 75 degree thermostat mine runs like that
          88 325is Five Speed
          Lachssilber

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            #6
            Mine never moves past a hair before the half. thats fine, right?
            1989 BMW 325is | 2019 Ford Ranger FX4
            willschnitz

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              #7
              That's all completely normal. I can't get my dad's m20 too far past the pic in the OP, and my m42 is just a hair behind 1/2 no matter how hard I push it.
              The first car I ever rode in was an e30

              Originally posted by Cabriolet
              Wish you the best and hope you don't remember anything after 10pm.



              1992 Mauritiusblau Vert
              2011 Alpinweiss 335is coupe

              2002 540i/6 Black/Black
              2003 GSX-R 750 (RIP)

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                #8
                Mine always sits around half. When i cruising, its just under. When Im sitting, its either at half or a hair over depending on how hot it is outside.
                I don't even own this car anymore, but I'm too lazy to change the picture.

                Comment


                  #9
                  you probably have a 70 or 75c t-stat. the 70c sits at about the 1/4 mark. if it were me, I'd change it to the 80c, but it's nothing to worry about as is.
                  Build thread

                  Bimmerlabs

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                    #10
                    MY first thermostat was just before half.
                    Now it runs right on half (80 degree thermostat I think).

                    Comment


                      #11
                      It can get cold in CO. Switch out your thermostat to an 80C one.

                      Comment


                        #12
                        +1 on switching to a hotter thermostat.. a hotter engine will probably run better, too (to a point)

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                          #13
                          With a stock thermostat (which I recommend) the gauge should be a waffleswaffleswaffleswaffles-hair below half.

                          I've never understood the fascination with low temp thermostats.
                          BimmerHeads
                          Classic BMW Specialists
                          Santa Clarita, CA

                          www.BimmerHeads.com

                          Comment


                            #14
                            Originally posted by MR 325 View Post
                            With a stock thermostat (which I recommend) the gauge should be a waffleswaffleswaffleswaffles-hair below half.

                            I've never understood the fascination with low temp thermostats.

                            I like to keep my bun nice and toasty in the winter! There is no fascination with low temp tstat in the frozen tundra.

                            Comment


                              #15
                              Originally posted by MR 325 View Post
                              With a stock thermostat (which I recommend) the gauge should be a waffleswaffleswaffleswaffles-hair below half.

                              I've never understood the fascination with low temp thermostats.
                              This. Exactly. Running a lower temp thermostat can actually increase wear on the engine, due to friction. The tolerances are engineered to be at the optimum level of friction at the stock thermostat's specs.
                              I do what I want

                              Past BMWs: '84 325e, '89 325ic, '92 525i, '91 325ic, '89 535i, '86 325es

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