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A1R 250 bob
05-23-2019, 09:33 PM
Disclaimer: This is only an intellectual exercise. A rational person would never think of removing a working catalytic converter.

The TAO TBR7 has a place where the catalytic converter is located. Because maintaining the proper exhaust bends is important, there is this notion that one could cut half way through on either side of the welds that hold the cat, then cut through one connecting perpendicular line and score the opposite side to create a kind of single use hinge to expose and remove the cat.

My question is where does the cat begin and end. Exploratory surgery always carries some risk. There is a crude picture that attempts to illustrate this concept. Will this cut expose enough of the cat for destructive removal or would the borders need to be expanded to the next welds?

Megadan
05-23-2019, 10:09 PM
From what I have seen, the catalyst is usually a bit past those welds, but most of what I have seen was on Hawks.

A1R 250 bob
05-24-2019, 06:13 AM
From what I have seen, the catalyst is usually a bit past those welds, but most of what I have seen was on Hawks.

Thanks.

I guess exploratory surgery may be in order. Do you know if the converter is welded in place of is it captured?

OneLeggedRider
05-24-2019, 07:33 AM
Just cut your horizontal line first and then you'll know where it begins and ends.

JerryHawk250
05-24-2019, 07:50 AM
On the Hawk it goes past the weld about 1/2".
http://www.chinariders.net/picture.php?albumid=149&pictureid=834

culcune
05-24-2019, 08:16 AM
On my 2 different TMEC 200s, I never removed or bypassed the smog pump thingy, nor messed with the catalytic converter in the exhaust (my '09 did not have a pump thingy, but my '13 did). I did have to replace the hose leading to the pump a time or two on the '13. The bikes were fine and had plenty of power. That being said, I am sure there is power to be found if one did remove them...

dpl096
05-24-2019, 10:13 PM
[QUOTE=A1R 250 bob;310028]Disclaimer: This is only an intellectual exercise. A rational person would never think of removing a working catalytic converter.

The TAO TBR7 has a place where the catalytic converter is located. Because maintaining the proper exhaust bends is important, there is this notion that one could cut half way through on either side of the welds that hold the cat, then cut through one connecting perpendicular line and score the opposite side to create a kind of single use hinge to expose and remove the cat.

We had a poster on here from Alabama, as I recall, about 4 years ago that posted a kinda guide on how he modified his cat on a Hawk. Im sorry but I can't remember his name offhand.....but .. He removed the exhaust entirely for the bike and dremled out a rectangular access on the back side of his cat,/pipe....gutted it and then welded the piece back into place...reinstalled the exhaust and it looked completely stock.

A1R 250 bob
05-26-2019, 05:34 AM
[QUOTE=A1R 250 bob;310028]Disclaimer: This is only an intellectual exercise. A rational person would never think of removing a working catalytic converter.

The TAO TBR7 has a place where the catalytic converter is located. Because maintaining the proper exhaust bends is important, there is this notion that one could cut half way through on either side of the welds that hold the cat, then cut through one connecting perpendicular line and score the opposite side to create a kind of single use hinge to expose and remove the cat.

We had a poster on here from Alabama, as I recall, about 4 years ago that posted a kinda guide on how he modified his cat on a Hawk. Im sorry but I can't remember his name offhand.....but .. He removed the exhaust entirely for the bike and dremled out a rectangular access on the back side of his cat,/pipe....gutted it and then welded the piece back into place...reinstalled the exhaust and it looked completely stock.

That is pretty much along the lines of this exercise. It does seem possible with half the pipe open, one could use hammer, chisels and drills to reduce and remove the partially exposed cat. I think I know someone who may attempt this sometime soon and will possibly get some anonymous pictures...