- 1). Hold the baffle on the underside of the pipe with the cone portion of the baffle pointing forward and the baffle back end flush or just forward of the end of the pipe. Mark the pipe on the bottom where the cone is resting.
- 2). Drill a 1/4-inch clearance hole at the cone mark on the bottom of the pipe. Drill a 3/16-inch pilot hole in the cone portion of the baffle.
- 3). Insert the baffle into the exhaust pipe. Align the holes in the pipe and the baffle. Install the 1/4-inch, self-tapping bolt into the holes and tighten it firmly. This will pull the baffle cone tight against the pipe and prevent it from rattling because of engine vibration.
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