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taking catalytic converter off

 
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Old 09-06-2011, 10:33 PM
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taking catalytic converter off

has anyone else done this? i have my test pipe but i just need to get my cat off. is it an easy bolt on or did you have to weld it?
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Old 09-06-2011, 10:36 PM
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Re: taking catalytic converter off

all the bolts are 14mm, but sometimes they can be a PITA to take off, so in that case, you can just simply cut them off and replace them all with some regular nuts and bolts
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Old 09-06-2011, 10:39 PM
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Re: taking catalytic converter off

have you done this? i have a megan test pipe. its resonated. wondering if this will sound any different . i have an apexi exhaust system setup as well
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Old 09-06-2011, 10:53 PM
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Re: taking catalytic converter off

It's not rocket science. Just unbolt it, replace the gaskets, and bolt in the test pipe. As mentioned, the bolts will probably be shot and need broken off. Just replace them with some new ones.
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Old 09-06-2011, 10:58 PM
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Re: taking catalytic converter off

do u torch them off if theyre that bad?
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Old 09-06-2011, 11:00 PM
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Re: taking catalytic converter off

You can try PB blaster, heating them with a torch and trying to loosen them, or just smash them off with a hammer. I would try in that order though.
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Old 09-07-2011, 12:26 AM
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Re: taking catalytic converter off

Quote:
Originally Posted by sexylude1 View Post
have you done this? i have a megan test pipe. its resonated. wondering if this will sound any different . i have an apexi exhaust system setup as well
I had one on my Accord and yes it did get a little louder.

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Originally Posted by RandallSharp View Post
You can try PB blaster, heating them with a torch and trying to loosen them, or just smash them off with a hammer. I would try in that order though.
I would recommend if after you heat it up with the torch and try to loosen it and fail, you just torch the nut right off rather than smashing them with a hammer. a lot easier and less time consuming. Plus you will probably cause less damage. Replace with new nuts and bolts.

Note: you should or may need to change the gaskets, depending on how bad they are, if you don't already have new ones.
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Old 09-07-2011, 02:14 AM
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Re: taking catalytic converter off

ok noob here about this test pipe, i had bought a (racing cat) well so i thought then i tried to put it on and it didn't have a connection for the second o2 sensor, what do you do? will you be able to pass emissions if you do this?
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Old 09-07-2011, 10:34 AM
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Re: taking catalytic converter off

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Originally Posted by Tazman100 View Post
ok noob here about this test pipe, i had bought a (racing cat) well so i thought then i tried to put it on and it didn't have a connection for the second o2 sensor, what do you do? will you be able to pass emissions if you do this?
Race cars dont need to pass emissions. Thats why they are race cars. Because RACECAR.
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Old 09-07-2011, 01:58 PM
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Re: taking catalytic converter off

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Race cars dont need to pass emissions. Thats why they are race cars. Because RACECAR.
RACECAR backwards is still RACECAR

and...........mind****

I bet anyone who read this tried reading it backwards to confirm, lmao
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Old 09-07-2011, 02:38 PM
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Re: taking catalytic converter off

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Originally Posted by RandallSharp View Post
RACECAR backwards is still RACECAR
CIVIC backwards is still CIVIC

and...........mind****

I bet anyone who read this tried reading it backwards to confirm, lmao
I jus did X2!!! LMFAO!!
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Old 09-07-2011, 03:05 PM
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Re: taking catalytic converter off

it really is that easy Randallsharp just described it to you. I ended up doing mine almost the same way, tried WD40, then torching. i had to end up just cutting the bolts LOL
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Old 09-07-2011, 05:22 PM
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Re: taking catalytic converter off

I used PB blaster, didn't work. I used my torch, didn't work. 3 hours later I got the bolts off by cutting them with my dremel. Was a PITA! Now I hate the way my exhaust sounds so raspy and wish I never did it. Smh
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Old 09-07-2011, 06:22 PM
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Re: taking catalytic converter off

Just spray it w/ WD or PB and let it sit for 30 min or so then get a good grip on it and either torque wrench it off or beat it with a hammer, and really hit it with lube, so it loosens it well. thats how i got mines off.
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Old 09-07-2011, 08:00 PM
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Re: taking catalytic converter off

lol this thread is funny, i didn't know how much knowledge was required to take off some bolts on an exhaust, i would have read racecar backwards as well but i had done it so many times there wasn't a point haha
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