C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Need Header/Cat removal thoughts....

Thread Tools
 
Search this Thread
 
Old Jun 7, 2002 | 05:56 AM
  #1  
khornet's Avatar
khornet
Thread Starter
Pro
 
Joined: Sep 2001
Posts: 587
Likes: 0
From: Phx/but its a dry blast furnace kinda heat AZ
Default Need Header/Cat removal thoughts....

I've got the factory catback off the car and am now trying to remove the cats, before moving on to the exhaust manifolds. Already I'm running into problems trying to remove nuts/bolts at the manifold/cat flanges. One cat flange bolt snapped off. My plan is to go get a good size breaker bar in the morning but I'm afraid I'm just going to start snapping more bolts. Any thoughts how I should proceed? A good soak of penetrating oil?

Then there is a stud on the drivers side cat/catback flange that has a support bracket behind it. Looks like a torx bit on the end of the stud. How am I going to get that thing off?

Why don't the fricken manufactuers use anti-seize on the bolts during assembly!! :cuss :smash:


[Modified by khornet, 1:57 AM 6/7/2002]
Reply
Old Jun 7, 2002 | 06:59 AM
  #2  
98NYFINESTVETTE's Avatar
98NYFINESTVETTE
Le Mans Master
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: May 2002
Posts: 5,446
Likes: 1
From: 10.70 @ 124mph, Stock Bottom End @ 3620lbs, ECS Racing Team Member. The 1st NMCA LSX Index Rumble World Champion. 2011,12,13 Champion
Default Re: Need Header/Cat removal thoughts.... (khornet)

I soaked all the bolts on mine for a whole day. They where removed with ease. I used WD40. When removing the bolt or nut, I will turn it counter clockwise 1 turn and then a 1/2 of a turn clockwise. This will prevent the bolt or nut to strip or give you a hard time.
Reply
Old Jun 7, 2002 | 01:16 PM
  #3  
khornet's Avatar
khornet
Thread Starter
Pro
 
Joined: Sep 2001
Posts: 587
Likes: 0
From: Phx/but its a dry blast furnace kinda heat AZ
Default Re: Need Header/Cat removal thoughts.... (89NYFINESTVETTE)

I will turn it counter clockwise 1 turn and then a 1/2 of a turn clockwise. This will prevent the bolt or nut to strip or give you a hard time.
I'll try it. Thx!
Reply
Old Jun 7, 2002 | 01:40 PM
  #4  
MarkLT1's Avatar
MarkLT1
Le Mans Master
10 Year Member
 
Joined: Sep 2001
Posts: 7,928
Likes: 1
From: More cowbell...
St. Jude Donor '04
Default Re: Need Header/Cat removal thoughts.... (khornet)

Even with 24 hours of penetrating oil soaking, I still snapped 2 of the 6 on my 92 when I took them off.. it is kind of a fact of life.. But the bolts are cheap to replace, so I wouldnt worry too much about it.

-Mark
Reply
Old Jun 7, 2002 | 01:48 PM
  #5  
MarkLT1's Avatar
MarkLT1
Le Mans Master
10 Year Member
 
Joined: Sep 2001
Posts: 7,928
Likes: 1
From: More cowbell...
St. Jude Donor '04
Default Re: Need Header/Cat removal thoughts.... (khornet)


Then there is a stud on the drivers side cat/catback flange that has a support bracket behind it. Looks like a torx bit on the end of the stud. How am I going to get that thing off?

[Modified by khornet, 1:57 AM 6/7/2002]
Oops.. didnt see that question.. Two words for ya- Ujoints, Extensions.. Find out which size torx it is, and get yourself a socket torx bit in that size.. Then using 1 or even 2 u joints, and extensions, loosen her up.. If you think that is bad, you should try loosening the tranny to block bolts!! :eek:


(my right hand is even with the location of the bolt.. :eek: )
Reply

Get notified of new replies

To Need Header/Cat removal thoughts....





All times are GMT -4. The time now is 09:30 AM.

story-0
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-1
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-2
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-3
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-4
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-5
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-6
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-7
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-8
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-9
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE