Identifying Bad Cats - TCCoA Forums
 
LinkBack Thread Tools
post #1 of 17 (permalink) Old 04-05-2006, 02:27 PM Thread Starter
5th Gear Poster
 
Join Date: Sep 2005
Location: Atwater, California
Age: 33
Posts: 398
Send a message via Yahoo to thunder04
Question Identifying Bad Cats

How can you tell if you need new cats? Do you just wait until you don't pass smog?? lol
thunder04 is offline  
Sponsored Links
Advertisement
 
post #2 of 17 (permalink) Old 04-05-2006, 03:07 PM
leet sauce
 
eg0r's Avatar
 
Join Date: Sep 2005
Location: Canada, BC
Age: 34
Posts: 1,841
that is a good question
id like to know the answer to that as well
eg0r is offline  
post #3 of 17 (permalink) Old 04-05-2006, 03:10 PM
Faster than Porkchop
 
cjchevez's Avatar
 
Join Date: Apr 2005
Location: Reseda ,Ca
Age: 43
Posts: 2,037
Mine got toast from a miss , they got red hot and then you could hear
the internals rattling.

But for them just going bad my guess is the performance would suck and you would fail the smog.

hope this helps.

1997 Ford Thunderbird 4.6 Sport .

60'...... 2.06
1/8th .. 9.194
mph .... 77.13

mods*
PI heads *PI intake*Mark VIII torque converter*Cobra T-loc w\4.10's * Jmod*tranny fluid cooler*P&P stock T/B & plenum*UD pulleys* Dynotech 4in ds*80mm Lightning maf*Xcal2*02 GT intake tube.
cjchevez is offline  
Sponsored Links
Advertisement
 
post #4 of 17 (permalink) Old 04-05-2006, 03:42 PM
leet sauce
 
eg0r's Avatar
 
Join Date: Sep 2005
Location: Canada, BC
Age: 34
Posts: 1,841
i thought its smog, mpg and performance
but its hard to judge if you drive car daily and get smog test done once 1-2years :S
im going soon tho so i guess that will tell me
eg0r is offline  
post #5 of 17 (permalink) Old 04-05-2006, 03:50 PM Thread Starter
5th Gear Poster
 
Join Date: Sep 2005
Location: Atwater, California
Age: 33
Posts: 398
Send a message via Yahoo to thunder04
Yeah. I'm having trouble determining a problem with my car and wish there was an easy way to identify if the cats are my problem. I talked to my dad about the problem I am having and he doesn't seem to think that it would be the cats...but I don't know!! I could be running around checking things when it is in fact the cats!!!
thunder04 is offline  
post #6 of 17 (permalink) Old 04-05-2006, 09:06 PM
leet sauce
 
eg0r's Avatar
 
Join Date: Sep 2005
Location: Canada, BC
Age: 34
Posts: 1,841
so can any1 answer this question?
or does any1 know what recomended cat replacement is?
thx
eg0r is offline  
post #7 of 17 (permalink) Old 04-05-2006, 09:51 PM
Faster than Porkchop
 
cjchevez's Avatar
 
Join Date: Apr 2005
Location: Reseda ,Ca
Age: 43
Posts: 2,037
Man, sometimes it seems to me that there are veterans here that simply have heard the same questions 100 times and they just ignore them.




Just thought of something ,you could saw the exhaust before the cats to check if theres a diffrence .
But then you would have to welded them back.

1997 Ford Thunderbird 4.6 Sport .

60'...... 2.06
1/8th .. 9.194
mph .... 77.13

mods*
PI heads *PI intake*Mark VIII torque converter*Cobra T-loc w\4.10's * Jmod*tranny fluid cooler*P&P stock T/B & plenum*UD pulleys* Dynotech 4in ds*80mm Lightning maf*Xcal2*02 GT intake tube.

Last edited by cjchevez; 04-05-2006 at 09:58 PM.
cjchevez is offline  
post #8 of 17 (permalink) Old 04-05-2006, 10:33 PM Thread Starter
5th Gear Poster
 
Join Date: Sep 2005
Location: Atwater, California
Age: 33
Posts: 398
Send a message via Yahoo to thunder04
Yeah...sometimes I feel the same way here. I just wish I knew how to search better so us "newbies" don't seem so annoying. lol
thunder04 is offline  
post #9 of 17 (permalink) Old 04-05-2006, 10:54 PM
Sig Nazi & Gallery Moderator

Administrator
 
mrs.tbirdbrain's Avatar
 
Join Date: Jan 2005
Location: Wellington, Florida
Posts: 745
try this link - its about clogged cats:
http://forums.tccoa.com/showthread.p...ytic+converter

and here also:
http://forums.tccoa.com/showthread.p...hlight=clogged

TBIRDBRAIN - PRESTON
YOU WILL NEVER BE FORGOTTEN
4/22/63 - 4/23/14
RIP JOEL BENDER
07/30/1979 - 03/26/2006

Last edited by mrs.tbirdbrain; 04-05-2006 at 11:00 PM.
mrs.tbirdbrain is offline  
post #10 of 17 (permalink) Old 04-06-2006, 01:21 AM Thread Starter
5th Gear Poster
 
Join Date: Sep 2005
Location: Atwater, California
Age: 33
Posts: 398
Send a message via Yahoo to thunder04
Thanks for the info. I think I may need to replace 'em.

Which set on this page is the better set?: http://store.summitracing.com/compar...4294908395+115
thunder04 is offline  
post #11 of 17 (permalink) Old 04-06-2006, 08:44 AM
leet sauce
 
eg0r's Avatar
 
Join Date: Sep 2005
Location: Canada, BC
Age: 34
Posts: 1,841
thx for articles
i didnt even think to search for that... :S
eg0r is offline  
post #12 of 17 (permalink) Old 04-06-2006, 10:15 AM
 
Join Date: Sep 2005
Posts: 197
a bad cat is when he pisses on the couch because you forgot to fill his bowl with food
Steve Cougar 25th is offline  
post #13 of 17 (permalink) Old 04-06-2006, 02:39 PM Thread Starter
5th Gear Poster
 
Join Date: Sep 2005
Location: Atwater, California
Age: 33
Posts: 398
Send a message via Yahoo to thunder04
lmao!
thunder04 is offline  
post #14 of 17 (permalink) Old 04-06-2006, 11:31 PM
 
Join Date: Aug 2005
Posts: 206
bad cats will usally smell...didint look at the links to see what they said, but thats what ive heard, that they make the exhoust smell bad or somthing..idk just my .02
86Fordtbird5.0 is offline  
post #15 of 17 (permalink) Old 04-07-2006, 03:40 PM
6th Gear Poster
 
Lithsanatrex's Avatar
 
Join Date: Nov 2002
Location: Evansville, IN
Age: 34
Posts: 608
Send a message via MSN to Lithsanatrex
just put set of new high flows on and call it done. easy!
Lithsanatrex is offline  
post #16 of 17 (permalink) Old 04-11-2006, 09:37 AM
leet sauce
 
eg0r's Avatar
 
Join Date: Sep 2005
Location: Canada, BC
Age: 34
Posts: 1,841
Quote:
Originally Posted by Lithsanatrex
just put set of new high flows on and call it done. easy!
Lithsanatrex's 'easy' definition :
1. Waist your money on something you might NOT need.
2. Waist more money for welding shop to install something you might NOT need.
3. Waist 2 hours of your time driving to welding shop, back and wait for them to do the job for something you might NOT need.
4. Worry about emmission tests since you already have a modified exhaust after installation of something you might have NOT needed.


thx for help friend


but what im seeing so far from the posts and searching is that there is no way to easily check unless you are willing to smell your exhaust or buy a tool that will measure the airflow.
eg0r is offline  
post #17 of 17 (permalink) Old 04-11-2006, 01:14 PM Thread Starter
5th Gear Poster
 
Join Date: Sep 2005
Location: Atwater, California
Age: 33
Posts: 398
Send a message via Yahoo to thunder04
To measure the exhaust pressure, I used an old, but very accurate, 0-15 PSI air tire gauge that was left over from when my dad used to race dirt stock, hacked apart an old O2 sensor, removed the gauge from the tire nozzle and clamped it to 10 feet of hose, clamping the hacked O2 sensor to the other end so I can screw the hose into the exhaust between the cat and the engine. Fired the car up and looked at the air pressure. Seemed to work extremely well. Of course, at first I didn't have the hose clamp on tight enough on the O2 sensor end, so it blew off and scared the hell out of me. OH **** WHAT'S THAT SOUND?!?!?! Ohhhh, hose blew off..ahahahahaha *change pants*

If I still have it (the gauge rig) laying around, I'll take pictures of it and post here.
thunder04 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TCCoA Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome