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

Clogged catalytic converter ?

Thread Tools
 
Search this Thread
 
Old Aug 18, 2006 | 02:51 PM
  #1  
lusor's Avatar
lusor
Thread Starter
Racer
10 Year Member
 
Joined: May 2005
Posts: 324
Likes: 1
From: Homestead Florida
Default Clogged catalytic converter ?

I noticed my 95 LT1 doesn't burn rubber.My first vette was an 84. I remember it would light the tires easily.I checked the mufflers and noticed very little air is coming out.Can it be the catalytic converter is clogged?Can I clean out the catalytic?Will it damage anything?
Reply
Old Aug 18, 2006 | 02:56 PM
  #2  
jimmers's Avatar
jimmers
Safety Car
15 Year Member
 
Joined: Mar 2005
Posts: 4,723
Likes: 11
From: Winnipeg Manitoba, Canada
Default

Originally Posted by lusor
I noticed my 95 LT1 doesn't burn rubber.My first vette was an 84. I remember it would light the tires easily.I checked the mufflers and noticed very little air is coming out.Can it be the catalytic converter is clogged?Can I clean out the catalytic?Will it damage anything?
Alot of guys gut out their cats.
Reply
Old Aug 18, 2006 | 03:17 PM
  #3  
BADDUCK's Avatar
BADDUCK
Le Mans Master
 
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
Default

Have a good local muffler shop check your system back pressure. I have never heard of cleaning a cat. Simply replace when needed. I just replaced my main cat and can tell a diff.
Reply
Old Aug 18, 2006 | 03:32 PM
  #4  
lusor's Avatar
lusor
Thread Starter
Racer
10 Year Member
 
Joined: May 2005
Posts: 324
Likes: 1
From: Homestead Florida
Default

Originally Posted by BADDUCK
Have a good local muffler shop check your system back pressure. I have never heard of cleaning a cat. Simply replace when needed. I just replaced my main cat and can tell a diff.

What type of cat did you get and how much was it ?
Reply
Old Aug 18, 2006 | 03:45 PM
  #5  
rickneworleansla's Avatar
rickneworleansla
Le Mans Master
15 Year Member
 
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
Default

Mine was clogged I picked up 2 mpg after removing it. I also had a rattling noise coming from it. Be carefull, when it gets bad enough it can shoot out the tailpipe and damage other cars.
Reply
Old Aug 18, 2006 | 03:47 PM
  #6  
Wildcat1's Avatar
Wildcat1
Racer
 
Joined: Apr 2004
Posts: 487
Likes: 0
From: Huntsville AL
Default

Google random technology cats.
Reply
Old Aug 18, 2006 | 04:03 PM
  #7  
Kinkajou's Avatar
Kinkajou
Burning Brakes
10 Year Member
 
Joined: Apr 2005
Posts: 1,109
Likes: 2
Default

I read somewhere that youhave to drive your car for a while at night, then stop your car and check from underneath, If the cat is clogged it will shine red because of all the heat.
Would not be a bad idea to check it. Another idea was to get it out and look if the cat is desintegrating from the inside. Tap it a little bit to see if some parts of the interior come out.

Of course the best test is to have a pollution check. If it is not good a lot of hidrocarbons will show up in the test, your engine will be running to rich.
Reply
Old Aug 18, 2006 | 04:31 PM
  #8  
BADDUCK's Avatar
BADDUCK
Le Mans Master
 
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
Default

Originally Posted by lusor
What type of cat did you get and how much was it ?
I got a Magnaflow (Carsound) Main Cat. My exhaust set-up is different than yours. Try www.summitracing.com
Do a search on your specific car and motor.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-1

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-2

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-3

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-4

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-5

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-6

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-7

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-8

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-9

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
Old Aug 18, 2006 | 07:29 PM
  #9  
rick lambert's Avatar
rick lambert
Le Mans Master
10 Year Member
 
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
Default

If you have a FSM, there's a section telling how to check for clogged cats using a vacumn guage.
Reply
Old Aug 18, 2006 | 09:34 PM
  #10  
Kinkajou's Avatar
Kinkajou
Burning Brakes
10 Year Member
 
Joined: Apr 2005
Posts: 1,109
Likes: 2
Default

Rick, sorry to ask, what does FSM stand for?
Using a Vaccum gauge sounds intresting
Reply
Old Aug 18, 2006 | 09:46 PM
  #11  
BADDUCK's Avatar
BADDUCK
Le Mans Master
 
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
Default

Factory Service Manual
Reply
Old Aug 18, 2006 | 10:48 PM
  #12  
Lone Ranger's Avatar
Lone Ranger
Le Mans Master
10 Year Member
 
Joined: Feb 2002
Posts: 7,858
Likes: 2
Default

I wonder if cats can just get restricted over time and/or mileage, that is they aren't necessarily 'clogged' but they aren't flowing at the rate as when new, like maybe they only flow 75% of what they did when new. Is this a possibility?
Reply
Old Aug 19, 2006 | 07:11 PM
  #13  
lusor's Avatar
lusor
Thread Starter
Racer
10 Year Member
 
Joined: May 2005
Posts: 324
Likes: 1
From: Homestead Florida
Default

All the cats I find have 1 inlet and outlet.While the stock one has 2.What do you use a y pie?
Reply

Get notified of new replies

To Clogged catalytic converter ?





All times are GMT -4. The time now is 05:46 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE