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    #16
    Feel much better now. i was thinking of swapping out my thermostat to a 71 degree one, but seeing that winter is coming i think ill just keep the 80.
    87 ETA | Hibernating

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      #17
      There's no reason to swap in the cold thermostat. like I said, if you are overheating, there's a problem with the cooling system. A 70c thermostat won't ultimately prevent you from overheating, but it will make the engine run less efficiently.
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      Bimmerlabs

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        #18
        It doesn't over heat any more. It used to but I found/fixed the problem.
        87 ETA | Hibernating

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          #19
          Originally posted by e30Villain View Post
          It doesn't over heat any more. It used to but I found/fixed the problem.

          Look...for the benefit of all, please tell us what you found/fixed.

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            #20
            Originally posted by dnguyen1963 View Post
            Look...for the benefit of all, please tell us what you found/fixed.
            My bad didn't mean to do that.

            Thermostat was stuck closed and I had a shitty waterpump.
            87 ETA | Hibernating

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              #21
              Originally posted by nando View Post
              There's no reason to swap in the cold thermostat. like I said, if you are overheating, there's a problem with the cooling system. A 70c thermostat won't ultimately prevent you from overheating, but it will make the engine run less efficiently.
              Right! all the thermostat does is to set the initial maximum temperature of the engine. If more heat is being produced than the cooling system can shed the engine will run hotter than the thermostat setting.

              On the race car it doesn't matter what thermostat I have in the car in summer temps. The engine will reach and stabilize at 185-195F when on track.
              The car makes it possible, but the driver makes it happen.
              Jim Levie, Huntsville, AL

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                #22
                Stock M20 tstat is 80c which is 176f.
                Seat Shocks....I have passed the baton to John Christy from Ninestitch. Email John or Garrett at ninestitch1@gmail.com

                https://www.r3vlimited.com/board/sho...86#post4944786
                Alice the Time Capsule
                http://www.r3vlimited.com/board/showthread.php?t=360504
                87 Zinno Cabrio barn find 98k and still smells like a barn. Build thread http://www.r3vlimited.com/board/show...20#post3455220

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                  #23
                  Originally posted by jlevie View Post
                  Right! all the thermostat does is to set the initial maximum temperature of the engine. If more heat is being produced than the cooling system can shed the engine will run hotter than the thermostat setting.
                  You mean minimum?

                  Ich gehöre nicht zur Baader-Meinhof Gruppe

                  Originally posted by Top Gear
                  Just imagine waking up and remembering you're Mexican.

                  Every time you buy a car with DSC/ESC, Jesus kills a baby seal. With a kitten.


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                    #24
                    so if I'm using a stock m20b25 engine here in the Pacific NW (Oregon), an 80c thermostat should be most efficient?

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                      #25
                      Yeah, you should already have an 80.
                      87 ETA | Hibernating

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                        #26
                        most efficient would be the hottest one. is there an 88C?

                        Ich gehöre nicht zur Baader-Meinhof Gruppe

                        Originally posted by Top Gear
                        Just imagine waking up and remembering you're Mexican.

                        Every time you buy a car with DSC/ESC, Jesus kills a baby seal. With a kitten.


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                          #27
                          Originally posted by u3b3rg33k View Post
                          most efficient would be the hottest one. is there an 88C?
                          I think 80 is the hottest it goes.
                          87 ETA | Hibernating

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                            #28
                            I must be thinking of the aux fan thermo-switch then.

                            Ich gehöre nicht zur Baader-Meinhof Gruppe

                            Originally posted by Top Gear
                            Just imagine waking up and remembering you're Mexican.

                            Every time you buy a car with DSC/ESC, Jesus kills a baby seal. With a kitten.


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                              #29
                              there's an 88c thermostat for the M42, don't know if it fits in the M20 though.
                              Build thread

                              Bimmerlabs

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