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installing aftermarket catbacks

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Old 11-26-2006, 09:58 PM
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Default installing aftermarket catbacks

2 questions:

car is a 99 LS1 A4

i'm anticipating getting an aftermarket catback in the near future. i was checking out the condition of my stock catback and noticed that the clamp where the stock catback connects to the ypipe is rusted beyond belief. do you guys find that this is common? my car is a 99 but it only has 35,000 miles on it.

for those of you who have ran into this would you recommend just cutting up the bolt to get the clamp off, or soaking it?

Also, when these catbacks are installed, do you guys typically weld them up when you're done, or just leave them bolted and clamped.

on my v6, i had everything welded.
Old 11-26-2006, 10:02 PM
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Use liquid wrench.
Old 11-26-2006, 10:03 PM
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well ive got a welder n **** at gramps along with sawz alls and torches so i jsut cut it off
Old 11-26-2006, 10:03 PM
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Sprayed mine with PB Blaster waited 2 minutes put the impact gun on it and it zipped right off.
Old 11-27-2006, 12:48 AM
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Originally Posted by Cummins
Sprayed mine with PB Blaster waited 2 minutes put the impact gun on it and it zipped right off.
PB Blaster + impact wrench will disassemble the ******* world. I wish I had taken pictures of the top of my stock shocks and the condition of the nut/threads.

I hammered a socket that was 4mm smaller than normal onto the bitch, then filled the socket up with PB blaster. Let it sit for about 30 minutes, then used my impact...................... on 150psi..........

You know what I always say...

"If it ain't broke........ fix it till it is..... "
Old 11-29-2006, 02:22 AM
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Originally Posted by TheBlurLS1
PB Blaster + impact wrench will disassemble the ******* world. I wish I had taken pictures of the top of my stock shocks and the condition of the nut/threads.

I hammered a socket that was 4mm smaller than normal onto the bitch, then filled the socket up with PB blaster. Let it sit for about 30 minutes, then used my impact...................... on 150psi..........

You know what I always say...

"If it ain't broke........ fix it till it is..... "
Yep its going either snap clean or zip off, either way its comming Off
Old 11-29-2006, 02:00 PM
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just use liquid wrench or a torch to get the rust off.. pound it a little and cut the over the axle pipe on the muffler side.




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