TBR7 exhaust weld and catalytic

Seberg77 · 06-18-2020, 02:27 PM

I'm wondering how much of the weld can be ground down from inside of the exhaust pipe. While i have the exhaust off i thought i would also gut the catalytic. It looks like I have a small leak and thought i would just cut there. I have seen many people cut the catalytic in half. Is there a right or wrong way to do this?

**JerryHawk250** · 06-18-2020, 03:18 PM

I've done both my Hawk and X22R. Grind away.

Seberg77 · 06-18-2020, 04:21 PM

Did you get noticable gains?

**JerryHawk250** · 06-18-2020, 04:52 PM

Quote:

Originally Posted by Seberg77

Did you get noticable gains?

I'm sure there was but hard to say because i gutted the cat at the same time. Overall much better performance after the mod.

Seberg77 · 06-18-2020, 04:25 PM

Progress so far.

kb21guru · 06-12-2021, 04:03 PM

For some people who may not have a welder.
muffler shops are a awesome place.
It's called a "Test Pipe"
A test pipe is a section of pipe that replaces the catalytic converters.
The muffler shop will cut your cat out and weld in a pipe to replace it.
Not everyone has a welder or 150 bucks to buy a exhaust system. So this reply is simply another option.

06-18-2020, 03:18 PM	#2
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,737	I've done both my Hawk and X22R. Grind away. __________________ 2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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06-18-2020, 04:21 PM	#3
Seberg77 Join Date: Mar 2020 Location: Peoria, AZ Posts: 12	Did you get noticable gains? __________________ 2019 TBR7 2008 Baja Dirt Runner 125 2006 Honda XR100R
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06-12-2021, 04:03 PM	#6
kb21guru Join Date: May 2021 Posts: 10	For some people who may not have a welder. muffler shops are a awesome place. It's called a "Test Pipe" A test pipe is a section of pipe that replaces the catalytic converters. The muffler shop will cut your cat out and weld in a pipe to replace it. Not everyone has a welder or 150 bucks to buy a exhaust system. So this reply is simply another option.
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