Can you remove studs from catalytic converter ?

halogodx · 04-25-2012, 10:39 PM

Hey guys,
I took my catalytic converters off to put on some test pipes. I might have to put my cat's back on for emissions testing. The question is, when i took the cat's off I broke the studs on both sides. Is it possible to remove the stud from the cat's so that i can bolt it onto the headers ?

shumby · 04-25-2012, 10:41 PM

up drill it out

techfracture · 04-27-2012, 04:09 PM

You could probably hammer the broken stud out, then use bolts to secure it back up. Or yeah drill them.

fuct · 04-27-2012, 04:36 PM

yea just drill em out! welcome to the fun of catalytic/emissions removal/install BS

halogodx · 04-27-2012, 07:25 PM

Any specifics i need to know while trying to trill it out ? drill bit size wise ?

Staples · 04-27-2012, 07:46 PM

Quote:

Originally Posted by halogodx

Any specifics i need to know while trying to trill it out ? drill bit size wise ?

Make sure you drill directly in the middle. Start with a smaller bit then work your way up until the stud comes out. The reason you do this is because it will soften the metal on the bolt until it crumbles.

This shouldn't be too bad on the cat, but it was a huge pain in the *** when a stud broke on my stock manifold.

harman.khinda · 01-18-2013, 11:34 AM

What size bolt do I need to replace the stud? I broke the driver side top left bolt on the cat.

Chuck33079 · 01-18-2013, 11:37 AM

Quote:

Originally Posted by Staples

Make sure you drill directly in the middle. Start with a smaller bit then work your way up until the stud comes out. The reason you do this is because it will soften the metal on the bolt until it crumbles.

You might want to use a punch to get a good spot to start drilling. Some cutting fluid (or wd-40 if it's all you've got) will keep your drill bits from getting chewed up. Slower speed is your friend here.

Mike · 01-18-2013, 11:40 AM

I think you can just use vice grips and unscrew them can't you? I seem to recall some of the studs came off mine and some didn't.

Chuck33079 · 01-18-2013, 11:42 AM

Quote:

Originally Posted by Mike

I think you can just use vice grips and unscrew them can't you? I seem to recall some of the studs came off mine and some didn't.

This could work too. Maybe heat up the flange too. I've also had good luck putting two nuts on a stud and loosening the first one, but I don't know if you've got room for that.

harman.khinda · 01-18-2013, 11:48 AM

is this the correct replacement stud? 2009 Nissan 370Z Stud - 6 x 35mm N 14 543 3

VDC_OFF · 01-18-2013, 11:54 AM

Quote:

Originally Posted by Chuck33079

This could work too. Maybe heat up the flange too. I've also had good luck putting two nuts on a stud and loosening the first one, but I don't know if you've got room for that.

thats very smart

04-25-2012, 10:39 PM	#1 (permalink)
halogodx Base Member Join Date: Sep 2009 Location: daytona beach Posts: 93 Drives: 09 nissan 370z 7AT Rep Power: 16	Can you remove studs from catalytic converter ? Hey guys, I took my catalytic converters off to put on some test pipes. I might have to put my cat's back on for emissions testing. The question is, when i took the cat's off I broke the studs on both sides. Is it possible to remove the stud from the cat's so that i can bolt it onto the headers ?

04-25-2012, 10:41 PM	#2 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 44 Posts: 6,288 Drives: your sister Rep Power: 237	up drill it out __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

04-27-2012, 04:09 PM	#3 (permalink)
techfracture Base Member $techfracture's Avatar$ Join Date: Dec 2011 Location: Woodland Posts: 31 Drives: 1982 280ZX Turbo Rep Power: 14 $techfracture is on a distinguished road$	You could probably hammer the broken stud out, then use bolts to secure it back up. Or yeah drill them.
$techfracture is offline$

01-18-2013, 11:40 AM	#9 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2186	I think you can just use vice grips and unscrew them can't you? I seem to recall some of the studs came off mine and some didn't. __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

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04-27-2012, 04:36 PM	#4 (permalink)
fuct A True Z Fanatic Join Date: May 2009 Location: Sugar Land Posts: 3,692 Drives: 97' Ranger :) Rep Power: 24	yea just drill em out! welcome to the fun of catalytic/emissions removal/install BS

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harman.khinda Enthusiast Member Join Date: Feb 2012 Location: Red Bluff, CA Posts: 378 Drives: 10 Nissan 370 PG 7AT Rep Power: 6723	What size bolt do I need to replace the stud? I broke the driver side top left bolt on the cat.

01-18-2013, 11:48 AM	#11 (permalink)
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