Cat bolts

Zoom370z · 02-20-2016, 12:45 AM

I got my hfc's buy now the battle begins. I've have been reading stories on those demon bolts as most people knows them by lol. Anybody has any advice on how to accomplish the task ?

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Memphis370Z · 02-20-2016, 07:39 AM

Tackling the demon bolt...

Demon Bolts

Getting those demon bolts out..

need help demon bolt

DeliriousClam · 02-20-2016, 08:00 AM

I sprayed two cans on liquid wrench on them, let it sit for a couple days, then attacked them with a breaker bar. Actually went pretty easily

vrizzo53 · 02-20-2016, 08:25 AM

Bring it to a shop and can it a do it. Let them deal with the headaches of the install chances are you'll encounter... just watch and make sure they give you YOUR stock cats back, I live in NJ and brought it to the hood they did a great job but had to cut out a bolt, good install but they wanted to keep my cats so they gave me different cats that were not mine, I went and spoke to the owner they had a "mix up"

brancky3 · 02-20-2016, 08:53 AM

I paid a kid on Craigslist $100 to do mine.

Memphis370Z · 02-20-2016, 08:58 AM

Whether you do the work yourself, or take it to a shop, just remember to remove the O2 sensors BEFORE tackling any of the bolts, especially with an impact wrench. Otherwise, most likely, the sensors will get damaged.

chuckie311 · 02-20-2016, 10:57 AM

Had mine done at a shop took them an hour and was on my way

EVOHUNTER · 02-20-2016, 11:19 AM

Quote:

Originally Posted by Memphis370Z

Whether you do the work yourself, or take it to a shop, just remember to remove the O2 sensors BEFORE tackling any of the bolts, especially with an impact wrench. Otherwise, most likely, the sensors will get damaged.

This is wrong, I hear this a lot and its a myth.

Back in the day when there was resistor type 02 sensors, they would get damaged from impact wrench's. This day and age they're a heater type 02's. They still have a resistor, but completely different style.

I own a exhaust/mech shop, we never remove the 02's, ever.

Inless there a resistor type o2.

Chuck33079 · 02-20-2016, 11:32 AM

Quote:

Originally Posted by EVOHUNTER

This is wrong, I hear this a lot and its a myth.

Back in the day when there was resistor type 02 sensors, they would get damaged from impact wrench's. This day and age they're a heater type 02's. They still have a resistor, but completely different style.

I own a exhaust/mech shop, we never remove the 02's, ever.

Inless there a resistor type o2.

Really? I've heard a lot of people here report failed O2 sensors after shops use an impact on them. If it's a myth I've wasted a lot of time doing things the hard way.

Memphis370Z · 02-20-2016, 11:36 AM

Quote:

Originally Posted by EVOHUNTER

This is wrong, I hear this a lot and its a myth.

Back in the day when there was resistor type 02 sensors, they would get damaged from impact wrench's. This day and age they're a heater type 02's. They still have a resistor, but completely different style.

I own a exhaust/mech shop, we never remove the 02's, ever.

Inless there a resistor type o2.

Hmm. Thanks for the info. Learn something new every day.

Zoom370z · 02-20-2016, 12:23 PM

Wow Sweet

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EVOHUNTER · 02-20-2016, 12:55 PM

Quote:

Originally Posted by Chuck33079

Really? I've heard a lot of people here report failed O2 sensors after shops use an impact on them. If it's a myth I've wasted a lot of time doing things the hard way.

Yep, We had to prove to one of my mechanics that this was the case.

we brought in my shop truck , took out a 02, smashed it with a hammer a bunch of times, put it back in, worked perfect lol, 2 years later. still working fine.

I see a lot of shops when installing 02s they don't back whined the wiring, they install it and twist up the wiring, the pin usually pulls out of the 02, and then its fd.

Rusty · 02-20-2016, 01:31 PM

Quote:

Originally Posted by EVOHUNTER

This is wrong, I hear this a lot and its a myth.

Back in the day when there was resistor type 02 sensors, they would get damaged from impact wrench's. This day and age they're a heater type 02's. They still have a resistor, but completely different style.

I own a exhaust/mech shop, we never remove the 02's, ever.

Inless there a resistor type o2.

Wrong bud. The impact WILL KILL the O2 sensors.

Been there, done that. You've been lucky.

EVOHUNTER · 02-20-2016, 02:31 PM

Hahaha, yah tons of luck, we've only done about 7,000 invoices on repaired and replaced exhaust system in 1 year. Not one bad 02? Sound like luck? No, its not.

do you own an exhaust shop? Do you install/fix 20 +exhausts daily? Not trying to be rude or anything, just being realistic.

Ive got a question for you, Did both your 02's go bad when you used your impact?

EVOHUNTER · 02-20-2016, 02:39 PM

Im going to order a brand new 02, ill make a video.

Ill take it out of the box, Will test the resistance before, Ill smash it with a hammer 20+ times, then will test it again.

02-20-2016, 12:45 AM	#1 (permalink)
Zoom370z Enthusiast Member Join Date: May 2014 Location: Lincoln ca Posts: 308 Drives: 2011 370z auto 7 Rep Power: 11	Cat bolts I got my hfc's buy now the battle begins. I've have been reading stories on those demon bolts as most people knows them by lol. Anybody has any advice on how to accomplish the task ? Sent from my SM-G920T using Tapatalk

02-20-2016, 07:39 AM	#2 (permalink)
Memphis370Z A True Z Fanatic Join Date: Sep 2014 Location: Memphis Area Posts: 3,117 Drives: '09 MB Rep Power: 124434	Tackling the demon bolt... Demon Bolts Getting those demon bolts out.. need help demon bolt labrador likes this.

02-20-2016, 08:00 AM	#3 (permalink)
DeliriousClam A True Z Fanatic Join Date: May 2015 Location: NJ Age: 31 Posts: 3,758 Drives: 12 Base Sport Rep Power: 54272	I sprayed two cans on liquid wrench on them, let it sit for a couple days, then attacked them with a breaker bar. Actually went pretty easily __________________ Stillen, AAM, Shine Auto, Fujimora, Swift, EVO-R, Carbon Fiber Element, Nitrous Outlet MECP Advanced: CEA26671 Most of what I post here are artistic works of fiction and falsehood. Only a fool would take anything I post here as fact.

02-20-2016, 08:25 AM	#4 (permalink)
vrizzo53 Base Member Join Date: Sep 2015 Location: Jersey Posts: 70 Drives: 2013 370z Touring Rep Power: 10	Bring it to a shop and can it a do it. Let them deal with the headaches of the install chances are you'll encounter... just watch and make sure they give you YOUR stock cats back, I live in NJ and brought it to the hood they did a great job but had to cut out a bolt, good install but they wanted to keep my cats so they gave me different cats that were not mine, I went and spoke to the owner they had a "mix up" brancky3 and Mysilverz like this.

02-20-2016, 08:53 AM	#5 (permalink)
brancky3 Track Member Join Date: Jun 2014 Location: Greer, SC Age: 37 Posts: 754 Drives: 14 370Z Gun Metallic Rep Power: 16	I paid a kid on Craigslist $100 to do mine. __________________ 2014 Nissan 370z Gun Metallic 6-spd Test Pipes \| Nismo CBE \| Stillen Gen3 \| Swift springs \| Advanation Sway Bars \| RJM Clutch \| GTR DBA Premium Wheels

02-20-2016, 08:58 AM	#6 (permalink)
Memphis370Z A True Z Fanatic Join Date: Sep 2014 Location: Memphis Area Posts: 3,117 Drives: '09 MB Rep Power: 124434	Whether you do the work yourself, or take it to a shop, just remember to remove the O2 sensors BEFORE tackling any of the bolts, especially with an impact wrench. Otherwise, most likely, the sensors will get damaged.

02-20-2016, 10:57 AM	#7 (permalink)
chuckie311 Enthusiast Member Join Date: Jul 2012 Location: las vegas Posts: 313 Drives: Q50/G37 Rep Power: 13	Had mine done at a shop took them an hour and was on my way __________________ Tuned by (Seb@Specialty-Z) 2011 G37 Cam'd FBO 347whp 280wtq Corn Fed 4.08 Gears

02-20-2016, 12:23 PM	#11 (permalink)
Zoom370z Enthusiast Member Join Date: May 2014 Location: Lincoln ca Posts: 308 Drives: 2011 370z auto 7 Rep Power: 11	Wow Sweet Sent from my SM-G920T using Tapatalk

02-20-2016, 02:31 PM	#14 (permalink)
EVOHUNTER Track Member Join Date: Jul 2011 Location: Edmonton, Canada Posts: 681 Drives: BOOSTED3-7-0 Rep Power: 15	Hahaha, yah tons of luck, we've only done about 7,000 invoices on repaired and replaced exhaust system in 1 year. Not one bad 02? Sound like luck? No, its not. do you own an exhaust shop? Do you install/fix 20 +exhausts daily? Not trying to be rude or anything, just being realistic. Ive got a question for you, Did both your 02's go bad when you used your impact? JARblue likes this. __________________ Last edited by EVOHUNTER; 02-20-2016 at 02:51 PM.

02-20-2016, 02:39 PM	#15 (permalink)
EVOHUNTER Track Member Join Date: Jul 2011 Location: Edmonton, Canada Posts: 681 Drives: BOOSTED3-7-0 Rep Power: 15	Im going to order a brand new 02, ill make a video. Ill take it out of the box, Will test the resistance before, Ill smash it with a hammer 20+ times, then will test it again. JARblue likes this. __________________ Last edited by EVOHUNTER; 02-20-2016 at 02:41 PM.

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