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Removing CAT

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Old Jan 13, 2011 | 01:16 PM
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Default Removing CAT
Lots of threads about this. Right now, I have access to a free header with a CAT. I am going to cut it in half (at the CAT) clean it out then weld it.

My question is this: Should I take into account the 1/4 inch I lost cutting the pipe or will it adjust out at the slip-ons?

Thanks,
Cale
 
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Old Jan 13, 2011 | 01:24 PM
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You shouldn't lose anything at all. The saw blade will take at most 1/8 " The Welder should leave a gap for the filler rod.
 
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Old Jan 13, 2011 | 01:43 PM
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i think you should ship that to me and let me try it out first !
 
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Old Jan 14, 2011 | 03:10 AM
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Default Not to worry
The slip on will give you at least a 1/4" to play with
 
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Old Jan 14, 2011 | 07:07 AM
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Originally Posted by Ronp42
You shouldn't lose anything at all. The saw blade will take at most 1/8 " The Welder should leave a gap for the filler rod.
Not a professional welder but I dont see how you could leave a gap when welding thin mat'l.
The width of the cut can be minimized by using a band saw.Butt it up and tig weld.
 
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Old Jan 14, 2011 | 07:30 AM
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+1 the thinner the cut blade the better you'll be, if your on the base you might find somebody with a laser cutter, that would be the ticket
 
Last edited by vtwinbob; Jan 14, 2011 at 07:41 AM.
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Old Jan 14, 2011 | 11:36 AM
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i used a band saw to cut mine, and didn't worry about the material loss when welding it back together. there is plenty of room for adjustment where the slip on mounts.
 
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Old Jan 14, 2011 | 11:47 AM
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Originally Posted by 1flhtk4me
Not a professional welder but I dont see how you could leave a gap when welding thin mat'l.
The width of the cut can be minimized by using a band saw.Butt it up and tig weld.
You should at least talk to a professional welder. You never want to butt solid against anything. Heavy pipe or thin exhaust pipe. The reason they keep a small gap, maybe 1/16 in a case like this, so the filler rod can penetrate and fill like it's designed too. If you don't leave a space for the filler rod to penetrate, Then the weld will probably crack.
 
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Old Jan 14, 2011 | 12:27 PM
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Check it out.
 
Last edited by djl; Jan 14, 2011 at 12:31 PM.
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Old Jan 14, 2011 | 12:29 PM
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Originally Posted by djl
Check it out.

C:\Documents and Settings\userd\My Documents\Harley\cat removal slide show.mht
sorry, no access to your hard drive.....
 
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