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Removing throttle plate bearings

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  • Removing throttle plate bearings

    Like the title says . . . I want to powder coat the upper intake on my 1992 motor. I've removed the swaged spots and they're still not moving. Anyone here ever get them out?

  • #2
    Once you grind off the "nibs" that hold the bearings in, you can take a 1/4" socket extension and gently tap on the bearings from the inside of the TB to get them out.
    Work in a circular motion as much as you can, though with the TB getting in the way, it's hard to do evenly.
    I've only done this on the 3100, 3400, and 2.4L throttlebodies, but those have all been the same.
    Franz

    1990 Z24-NA 3.1L
    14.72 @ 92.24 MPH
    14.89 @ 94.92 MPH

    The boost is coming....

    Comment


    • #3
      Originally posted by XLR8ING
      Once you grind off the "nibs" that hold the bearings in, you can take a 1/4" socket extension and gently tap on the bearings from the inside of the TB to get them out.
      Work in a circular motion as much as you can, though with the TB getting in the way, it's hard to do evenly.
      I've only done this on the 3100, 3400, and 2.4L throttlebodies, but those have all been the same.
      Kind of what I had in mind when I started this project. Problem is, the hole in the throttle body for the shaft to pass through is very close to the diameter of the shaft itself.

      Any ideas?

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      • #4
        I put the socket extension in from the back of the TB butterfly hole and tap on the bearing on an angle. It's the only way I've figured how to do it.
        Good luck man!
        Franz

        1990 Z24-NA 3.1L
        14.72 @ 92.24 MPH
        14.89 @ 94.92 MPH

        The boost is coming....

        Comment


        • #5
          Do you think heating the t/b housing would help?

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          • #6
            Possibly, but I'd almost think the bearings would expand more because the aluminum housing would dissipate heat faster than the steel of the outer bearing surfaces.
            Franz

            1990 Z24-NA 3.1L
            14.72 @ 92.24 MPH
            14.89 @ 94.92 MPH

            The boost is coming....

            Comment


            • #7
              Make a simple slide hammer out of 1/4" all thread. Or..Use the all thread to draw it out. Put large washers on the outside and support the inside with smaller washers. I used the slide hammer on mine. Remember to stake it when you reinstall. Don't heat! Aluminum hates that..
              If you are driving a Chevy, everything else, is just a blur. 3.4 Carbon Footprint.
              sigpic

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