pipes - muffler mod with photo link
Posted: Thu Nov 05, 2009 11:17 am
Jim,
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Sounds like I should repost my muffler mod instructions for you. I think this is exactly what you're looking for:
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How I did the muffler mod (a.k.a. tweetyectomy)
What you need:
2" metal hole saw
4" of 1" diameter dowel
a drill bit of the appropriate size for the hole saw
a pair of needle nosed pliers
a GOOD drill
a 1 7/8" or 2" OD piece of exhaust pipe or exhaust tip
a hacksaw
sandpaper
hi-temp matte black barbecue paint
a magnet on a stick (optional)
A few bucks to pay a welder.
* Chuck the drill bit and drill a longitudinal hole in the dowel. (The dowel will serve as a guide to keep the hole saw centered while cutting the back of your muffler.)
* Unchuck the drill bit and chuck in the hole saw.
* Attach the drill bit to the hole saw and tighten.
* Slip the dowel over the drill bit.
* Slide the whole contraption into the opening of your exhaust.
* Cut the hole starting with slow speed and slow feed until you get a groove that the hole saw will ride in. Use cutting oil or similar applied at intervals while you're cutting.
* Once the groove is created, you can increase the speed of the drill.
* When you're getting close to breaking through, be careful not to push too hard and ram the hole saw into the guts of the muffler.
* Tweety should come out easily if you grasp it with the needle nose pliers.
* Use the magnet to pick up any shavings that fell into the muffler.
* Stick the exhaust tip into the hole and guesstimate how much you want to cut off to leave the desired amount protruding.
* Cut the exhaust tip to length with the hacksaw.
* Have someone weld it in for you. (Midas did it for me for 20 bucks)
* Surface sand all exposed metal to allow for best paint adhesion
* Rattle-can the bare metal parts.
* Start and listen to your new better-sounding, freer-flowing exhaust.
Here are the pictures of my exhaust mod. Please excuse the sloppy weld, I guess the guy was having a bad day or something...
http://www.flickr.com/photos/39547532@N03/sets/72157619806103287/
-Jeff Khoury