Removing CAT
HDF Community Team
Joined: Jun 2006
Posts: 12,774
Likes: 2,606
From: san antonio
I know, my bad; fingers working faster than my brain. It's a great slide show on cat removal from start to finish. I think I found it on this forum a few weeks back; I saved it for future reference and have posted it for others but now I can't remember how I linked it.
I will figure it out.
Here, try this.
http://albums.phanfare.com/isolated/...945184_5528623
I will figure it out.Here, try this.
http://albums.phanfare.com/isolated/...945184_5528623
Tourer
Joined: Nov 2005
Posts: 396
Likes: 1
From: Cypress, Texas
The problem is not with the mufflers which can be adjusted for the loss of the saw blade thickness. The problem comes with the hanger for the pipe that goes under the bike where it attaches to the clamp on the transmission. If you do not gap weld the pipe it puts that under pipe in a slight bind in the hanger because it is now closer to the transmission. It is not a big deal but it takes just a little more time to gap weld the pipe and not have the possibility of the binding under pipe. I have done several of these and the gap weld make the whole job go back onto the bike much easier. BTW a chop saw with a cutoff wheel makes a much cleaner cut and takes a lot less time.
Seasoned HDF Member
Joined: Jan 2007
Posts: 20,616
Likes: 4,440
From: anacoco, la
The problem is not with the mufflers which can be adjusted for the loss of the saw blade thickness. The problem comes with the hanger for the pipe that goes under the bike where it attaches to the clamp on the transmission. If you do not gap weld the pipe it puts that under pipe in a slight bind in the hanger because it is now closer to the transmission. It is not a big deal but it takes just a little more time to gap weld the pipe and not have the possibility of the binding under pipe. I have done several of these and the gap weld make the whole job go back onto the bike much easier. BTW a chop saw with a cutoff wheel makes a much cleaner cut and takes a lot less time.
Cruiser
Joined: Sep 2010
Posts: 126
Likes: 0
From: Eastern PA
The problem is not with the mufflers which can be adjusted for the loss of the saw blade thickness. The problem comes with the hanger for the pipe that goes under the bike where it attaches to the clamp on the transmission. If you do not gap weld the pipe it puts that under pipe in a slight bind in the hanger because it is now closer to the transmission. It is not a big deal but it takes just a little more time to gap weld the pipe and not have the possibility of the binding under pipe. I have done several of these and the gap weld make the whole job go back onto the bike much easier. BTW a chop saw with a cutoff wheel makes a much cleaner cut and takes a lot less time.
Tourer
Joined: Nov 2005
Posts: 396
Likes: 1
From: Cypress, Texas
I cut them in the middle of the fat section, basically in the middle of the cat. I have also cut two pipes right through the rear weld. Cutting at the rear weld make for a better looking finished job because you can blend the welds together. The problem is you need a longer tool to get the cat material out and lining the pieces up to weld the it together take a lot more time to line up.
Outstanding HDF Member
Joined: Oct 2007
Posts: 3,437
Likes: 15
I cut them in the middle of the fat section, basically in the middle of the cat. I have also cut two pipes right through the rear weld. Cutting at the rear weld make for a better looking finished job because you can blend the welds together. The problem is you need a longer tool to get the cat material out and lining the pieces up to weld the it together take a lot more time to line up.
Cruiser
Joined: Sep 2010
Posts: 126
Likes: 0
From: Eastern PA
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Road Warrior
Joined: Jan 2010
Posts: 1,290
Likes: 20
From: Salem, Or
Here is a picture of how I did mine. I used a Dremmel to cut the pipe and since it wasn't cut in half I never had to worry about aligning the 2 halves and the pipe not fitting to the bike afterwords.
Outstanding HDF Member
Joined: Jan 2010
Posts: 2,916
Likes: 31
From: earth
Bro that is seriously impressive, a very clever appraoch to the cat removal, you could probably get away with an even smaller cut out section. I've been fabricating for a long time, and I never even considered doing it that way. Way to think outside the box.