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- Locate the threaded port on the inlet side of the header, and find the dimple at the center.
- Use the dimple to center the drill bit. Drill a 1/4 in (6.4 mm) diameter hole through the port. Take care not to damage the plastic threads. TIP: Drilling a 1/8 in (3 mm) diameter hole first will help prevent thread damage
- Wrapped 5-6 turns of PTFE (Teflon) tape around the male threads of the adaptor.
- Thread in your 1/4 inch adaptor into the port. Make sure to get a snug fit. Do not over-tighten.
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