Sealing Intake Vacuum Ports Without Welding

Here is a video showing how to close up the vacuum ports on the intake. It details how to seal them off without having to weld them up.

This is simply how I did it to one of my intakes. This may help some of you wondering how to prepare to swap from a stock carburetor to a Weber carburetor.

A lot of owners like to use rubber caps on the intake, but they often dry rot over time. Eventually, they leak air (vacuum leak), causing rough idles.

Items used:

  • Seven – 1/4″-28 x 1/4″ Set Screws
  • Two – 5/16″-24 x 3/8″ Set Screws
  • 1/4″ x28 Tap
  • 13/64 Drill Bit
  • 5/16″ x24 Tap
  • 17/64 Drill Bit
  • Pittsburgh 40 piece SAE tap and die set
  • Two – 1/8″ MNPT-5/16″ hose fitting in brass

Watch the full video on how I did it here.

Comments

One response to “Sealing Intake Vacuum Ports Without Welding”

  1. Thank you Mitch. On my 2.0L there is a fitting with a wire on it that is located just below the brass fitting you installed on the water outlet flange. Can you tell me what this is for and if I can cut the wire and plug that hole. Also, when you tap for set screws how deep do you go. I am assuming you drill thru when taking out the old vacume tubes. Is that correct?

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