IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Auto Tech => Topic started by: SuperSix on February 06 2011, 02:55:34 PM

Title: Finally fixed the Caddy Cat
Post by: SuperSix on February 06 2011, 02:55:34 PM

Car's been rattling for a few years - getting progressively worse. I figured the cat substrate had broken down - I was right.

The cat is swedged/crimped on - so after measuring the pipe (2.5") and ordering a heavy duty Wagner butt clamp (No, not THAT one, Zap) I dug in and got it done today.

The acceleration has been getting worse - the crumbled substrate had been blocking the exhaust.

After clearing it out and putting it all back together - took it for a drive - accelerates much better, and sounds pretty bad ass now too.

Pile o' substrate:

(http://www.ihadav8.com/images/cadcat1.jpg)

Closeup of said substrate:

(http://www.ihadav8.com/images/cadcat2.jpg)

Empty cat ready to go back in:

(http://www.ihadav8.com/images/cadcat3.jpg)

Title: Finally fixed the Caddy Cat
Post by: Wrecked Em on February 06 2011, 07:29:37 PM

I had an issue with the 85 GN after I installed a new cat (coincided with ATR 3" exhaust install). Soon after, the acceleration started to demise and then the boost dropped off to the point of only building 6# at WOT. I pulled the cat and found the catalyst was melted. Nothing a long hammer handle could not fix. Put the cat back on the car and it has ran like a champ ever since.

Title: Re: Finally fixed the Caddy Cat
Post by: $1987 GN$ on February 07 2011, 08:10:21 AM

Quote from: "SuperSix @ Sun Feb 06, 2011 2:55 pm"

Car's been rattling for a few years - getting progressively worse. I figured the cat substrate had broken down - I was right.

The cat is swedged/crimped on - so after measuring the pipe (2.5") and ordering a heavy duty Wagner butt clamp (No, not THAT one, Zap) I dug in and got it done today.

The acceleration has been getting worse - the crumbled substrate had been blocking the exhaust.

After clearing it out and putting it all back together - took it for a drive - accelerates much better, and sounds pretty bad ass now too.

Pile o' substrate:

(http://www.ihadav8.com/images/cadcat1.jpg)

Closeup of said substrate:

(http://www.ihadav8.com/images/cadcat2.jpg)

Empty cat ready to go back in:

(http://www.ihadav8.com/images/cadcat3.jpg)

Where the heck is your snow?


AJ___

Title: Finally fixed the Caddy Cat
Post by: SuperSix on February 07 2011, 08:17:46 AM

What is this "snow" you speak of? :)

I live just north of Tampa Florida - no snow here.

Title: Finally fixed the Caddy Cat
Post by: $1987 GN$ on February 07 2011, 08:35:39 AM

Quote from: "SuperSix @ Mon Feb 07, 2011 8:17 am"

What is this "snow" you speak of? :)

I live just north of Tampa Florida - no snow here.

That's no excuse.
I guess I hijacked your cat thread, ooops.
AJ___

Title: Finally fixed the Caddy Cat
Post by: SuperSix on February 07 2011, 08:40:03 AM

Hell, at least you replied.

Title: Re: Finally fixed the Caddy Cat
Post by: DCEPTCN on February 07 2011, 11:28:18 PM

We always just called it 'honeycomb', wiseass.

...so, no emissions laws around you?