S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

I now proclaim my self Pre-Cat Gutting Master.

Thread Tools
 
Search this Thread
 
Old 04-23-2005, 05:01 PM
  #1  
AudiWorld Super User
Thread Starter
 
reefer_bob's Avatar
 
Join Date: Oct 2002
Posts: 14,321
Likes: 0
Received 0 Likes on 0 Posts
Default I now proclaim my self Pre-Cat Gutting Master.

My first one took me like 3 hours. The second one took me 15 minutes.

If you're in the Nor-Cal area, and need pre-cat's gutted. Call me. I'll charge you two sand paper flapper wheels and a case of beer.



Oh, and the 1/2" x 12" drill bit is the key.

w00t.
Old 04-23-2005, 05:06 PM
  #2  
AudiWorld Senior Member
 
zhenya's Avatar
 
Join Date: Feb 2004
Posts: 1,120
Likes: 0
Received 0 Likes on 0 Posts
Default

Nice. I'll be doing this myself in the next couple of weeks. I'm a looong way from Nor-Cal though!
Old 04-23-2005, 05:09 PM
  #3  
AudiWorld Super User
 
ZephyrS4's Avatar
 
Join Date: Feb 2002
Posts: 9,376
Likes: 0
Received 0 Likes on 0 Posts
Default

What did you do toget the second one done so fast???
Old 04-23-2005, 05:30 PM
  #4  
Member
 
AudiS4guy - NorCal's Avatar
 
Join Date: Aug 2004
Posts: 3,258
Likes: 0
Received 0 Likes on 0 Posts
Default

ehh...I could have told you that siiiiir! Now you just gotta get em on the car.
Old 04-23-2005, 05:43 PM
  #5  
AudiWorld Super User
Thread Starter
 
reefer_bob's Avatar
 
Join Date: Oct 2002
Posts: 14,321
Likes: 0
Received 0 Likes on 0 Posts
Default The long drill bit is key.

I drilled several holes in the precat. As close to the edges as possible and as close to each other as possible.

After that, I took my 18" cold chissel and took out the space between the holes. This took out the center of the cat.

Then with the smaller chissel, I went down the sides and pried it cat in towards itself breaking it up as I went.

Super easy.

Then the sand paper flapper wheel cleans up what's left.
Old 04-23-2005, 05:46 PM
  #6  
AudiWorld Super User
 
ZephyrS4's Avatar
 
Join Date: Feb 2002
Posts: 9,376
Likes: 0
Received 0 Likes on 0 Posts
Default

Nice!
Old 04-23-2005, 06:02 PM
  #7  
AudiWorld Expert
 
[[uber.bucket]]'s Avatar
 
Join Date: Aug 2001
Posts: 26,774
Likes: 0
Received 0 Likes on 0 Posts
Default

flap flap flap
Old 04-23-2005, 07:20 PM
  #8  
AudiWorld Super User
 
Snow Trooper's Avatar
 
Join Date: Mar 2004
Posts: 5,701
Likes: 0
Received 0 Likes on 0 Posts
Default

i own you, i do both in about 20 minutes and that includes welding up the o2 bung hole
Old 04-23-2005, 07:54 PM
  #9  
AudiWorld Super User
 
Swank4's Avatar
 
Join Date: Aug 2002
Location: San Francisco
Posts: 6,762
Likes: 0
Received 0 Likes on 0 Posts
Default

Yeah, but do you have the tools to weld the new O2 bungs?
Old 04-23-2005, 09:43 PM
  #10  
AudiWorld Super User
 
OCA::DIY Motorsports's Avatar
 
Join Date: Aug 2003
Posts: 5,645
Likes: 0
Received 0 Likes on 0 Posts
Default

Bob, is that a 1/2" wood blade bit, or a hole saw bit (round)??


Quick Reply: I now proclaim my self Pre-Cat Gutting Master.



All times are GMT -8. The time now is 03:38 PM.