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Throttle body coolant line (S52)

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    Throttle body coolant line (S52)

    After installing the temp switch on the side of the head, what do you do with the port in the throttle body? Plug it? What about the other one?

    #2
    On my swap, I cut the feed line from the coolant pipe like 0.5" from the base, crushed it flat, and welded it closed.

    The TB ports can just stay open. I don't think there's any way it could cause issues.
    Originally posted by priapism
    My girl don't know shit, but she bakes a mean cupcake.
    Originally posted by shameson
    Usually it's best not to know how much money you have into your e30

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      #3
      Originally posted by svn2002s View Post
      After installing the temp switch on the side of the head, what do you do with the port in the throttle body? Plug it? What about the other one?
      Since you are in California, you will need the throttle body coolant lines operational to pass bar for street use.

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        #4
        Originally posted by bradmer View Post
        Since you are in California, you will need the throttle body coolant lines operational to pass bar for street use.
        why would they care? OP, you could always have a fake line going to the TB

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          #5
          Originally posted by eternal24k View Post
          why would they care? OP, you could always have a fake line going to the TB
          They care, I was told the reason is that the throttle can get stuck wide open in freezing temperatures. I originally went with no TB lines due to having only 2 ports in the head but got called on it. I have since put a T in the line, easy to do and compliant.
          Good luck OP

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