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Author Topic: Finally fixed the Caddy Cat  (Read 4377 times)

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Offline SuperSix

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Finally fixed the Caddy Cat
« 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:



Closeup of said substrate:



Empty cat ready to go back in:

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'87 GN, 60lb, TA49, THDP, FTP cam, T+ lots o' shit - SOLD
'07 Ford F150 Lariat 2WD, 5.4L 3v - 255k
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Offline Wrecked Em

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Finally fixed the Caddy Cat
« Reply #1 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.
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Offline $1987 GN$

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Re: Finally fixed the Caddy Cat
« Reply #2 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:



Closeup of said substrate:



Empty cat ready to go back in:




Where the heck is your snow?


AJ___
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Offline SuperSix

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Finally fixed the Caddy Cat
« Reply #3 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.
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'87 GN, 60lb, TA49, THDP, FTP cam, T+ lots o' shit - SOLD
'07 Ford F150 Lariat 2WD, 5.4L 3v - 255k
'20 Kubota BX2380. FEL, 60" deck
'78 IH/Case 184 Lo-Boy
'99 Kawasaki Bayou 400 4x4

Offline $1987 GN$

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Finally fixed the Caddy Cat
« Reply #4 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___
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Offline SuperSix

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Finally fixed the Caddy Cat
« Reply #5 on: February 07 2011, 08:40:03 AM »
Hell, at least you replied.
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'87 GN, 60lb, TA49, THDP, FTP cam, T+ lots o' shit - SOLD
'07 Ford F150 Lariat 2WD, 5.4L 3v - 255k
'20 Kubota BX2380. FEL, 60" deck
'78 IH/Case 184 Lo-Boy
'99 Kawasaki Bayou 400 4x4

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Re: Finally fixed the Caddy Cat
« Reply #6 on: February 07 2011, 11:28:18 PM »
We always just called it 'honeycomb', wiseass.

...so, no emissions laws around you?
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