Cat Removal?
Thread Starter
TECH Addict
Joined: Jun 2002
Posts: 2,428
Likes: 0
From: Las Vegas, NV
Cat Removal? My exhaust setup is in the sig. If I wanted to remove a cat to weld in a bung do I have to completely remove the y-pipe, or can I just disconnect it at the cats and push it either up or down to remove the one cat? In other words, remove the nuts and or bolts holding the cat to the shorty header collector, remove the nuts and bolts holding the y-pipe to both cats, push y-pipe up or down for clearnace to remove cat?
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by Predator
Anyone? Do u have to remove the y-pipe completely to remove a cat?
I mean how we supposed to know how you had it installed.
If it's off the shelf, I suspect the CATS and Y are one peice. But it might not be.
Thread Starter
TECH Addict
Joined: Jun 2002
Posts: 2,428
Likes: 0
From: Las Vegas, NV
I have a separate RT (Random Tech) y-pipe, and the individual cats (RT) are bolted to the y-pipe with two bolts and nuts. It's pretty much how the stock setup is except I have substituted RT y-pipe and cats. I looked under the car but still wasn't sure. I removed the brace that goes over the y-pipe.
Let me put it this way, if a car was completely stock, what would be the easiest procedure for removing just one cat?
Thanks.
Let me put it this way, if a car was completely stock, what would be the easiest procedure for removing just one cat?
Thanks.
Thread Starter
TECH Addict
Joined: Jun 2002
Posts: 2,428
Likes: 0
From: Las Vegas, NV
BTW, I know that Helms manual says to remove the y-pipe to remove a stock cat, but I was wondering if it was really necessary. The Helms manual doesn't always give the easiest procedure. I'll get it one way or the other, just trying to make things easier on myself.
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by Predator
I have a separate RT (Random Tech) y-pipe, and the individual cats (RT) are bolted to the y-pipe with two bolts and nuts. It's pretty much how the stock setup is except I have substituted RT y-pipe and cats. I looked under the car but still wasn't sure. I removed the brace that goes over the y-pipe.
Let me put it this way, if a car was completely stock, what would be the easiest procedure for removing just one cat?
Thanks.
Let me put it this way, if a car was completely stock, what would be the easiest procedure for removing just one cat?
Thanks.
You will have to at least lossen the whole system so you can move it back, else you'll never get the cats out. But you may have to drop it completely, there's no way of really knowing until you try.
Plan on having to drop the whole thing, that way you won't be dissapointed if you have too.
Trending Topics
Thread Starter
TECH Addict
Joined: Jun 2002
Posts: 2,428
Likes: 0
From: Las Vegas, NV
Thanks, appreciate the help. I was hoping for some miracle simple trick, but it sounds like business as usual. In fact I don't think it's worth the trouble. I'll probably just use my rear O2 sensor bung to see if my PE/WOT a/f is consistent across the rpm range.
Thanks again.
Thanks again.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
TECH Addict
Joined: Jun 2002
Posts: 2,428
Likes: 0
From: Las Vegas, NV
BTW 300bhp/ton, you seem to know a lot about high-flow cats. Do you think that RT high-flow cats would effect a wide-band O2 reading less than stock cats? The common knowledge is that you mount a wb O2 sensor pre-cat, but it seems that the assumption is that the cats are stock. Do high-flow cats, with a wb mounted after the cat, give more accurate readings than mounting after a stock cat?
Thanks.
Thanks.
